diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index c9b8ff3f5..6b77482c6 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -18,7 +18,7 @@
 /applications/main/gpio/ @skotopes @DrZlo13 @hedger @nminaylov
 /applications/main/ibutton/ @skotopes @DrZlo13 @hedger @gsurkov
 /applications/main/infrared/ @skotopes @DrZlo13 @hedger @gsurkov
-/applications/main/nfc/ @skotopes @DrZlo13 @hedger @gornekich
+/applications/main/nfc/ @skotopes @DrZlo13 @hedger @gornekich @Astrrra
 /applications/main/subghz/ @skotopes @DrZlo13 @hedger @Skorpionm
 /applications/main/u2f/ @skotopes @DrZlo13 @hedger @nminaylov
 
@@ -40,6 +40,8 @@
 
 /applications/system/storage_move_to_sd/ @skotopes @DrZlo13 @hedger @nminaylov
 
+/applications/debug/unit_tests/ @skotopes @DrZlo13 @hedger @nminaylov @gornekich @Astrrra @gsurkov @Skorpionm
+
 # Documentation
 /documentation/ @skotopes @DrZlo13 @hedger @drunkbatya
 /scripts/toolchain/ @skotopes @DrZlo13 @hedger @drunkbatya
@@ -54,6 +56,9 @@
 /lib/mbedtls/ @skotopes @DrZlo13 @hedger @nminaylov
 /lib/micro-ecc/ @skotopes @DrZlo13 @hedger @nminaylov
 /lib/nanopb/ @skotopes @DrZlo13 @hedger @nminaylov
-/lib/nfc/ @skotopes @DrZlo13 @hedger @gornekich
+/lib/nfc/ @skotopes @DrZlo13 @hedger @gornekich @Astrrra
 /lib/one_wire/ @skotopes @DrZlo13 @hedger @gsurkov
 /lib/subghz/ @skotopes @DrZlo13 @hedger @Skorpionm
+
+# CI/CD
+/.github/workflows/ @skotopes @DrZlo13 @hedger @drunkbatya
diff --git a/.github/workflows/amap_analyse.yml b/.github/workflows/amap_analyse.yml
index a50c5436f..cfb1eab14 100644
--- a/.github/workflows/amap_analyse.yml
+++ b/.github/workflows/amap_analyse.yml
@@ -91,7 +91,7 @@ jobs:
           export RODATA_SIZE="$(get_size ".rodata")"
           export DATA_SIZE="$(get_size ".data")"
           export FREE_FLASH_SIZE="$(get_size ".free_flash")"
-          python3 -m pip install mariadb
+          python3 -m pip install mariadb==1.1.4
           python3 scripts/amap_mariadb_insert.py \
             ${{ secrets.AMAP_MARIADB_USER }} \
             ${{ secrets.AMAP_MARIADB_PASSWORD }} \
diff --git a/.github/workflows/pvs_studio.yml b/.github/workflows/pvs_studio.yml
index f28fad20d..9de493a44 100644
--- a/.github/workflows/pvs_studio.yml
+++ b/.github/workflows/pvs_studio.yml
@@ -57,7 +57,7 @@ jobs:
 
       - name: 'Generate compile_comands.json'
         run: |
-          FBT_TOOLCHAIN_PATH=/runner/_work ./fbt COMPACT=1 version_json proto_ver icons firmware_cdb dolphin_internal dolphin_blocking
+          FBT_TOOLCHAIN_PATH=/runner/_work ./fbt COMPACT=1 version_json proto_ver icons firmware_cdb dolphin_internal dolphin_blocking _fap_icons
 
       - name: 'Static code analysis'
         run: |
diff --git a/.gitignore b/.gitignore
index 38a31bf01..61c594ed1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,5 @@ openocd.log
 # PVS Studio temporary files
 .PVS-Studio/
 PVS-Studio.log
+
+.gdbinit
diff --git a/.pvsconfig b/.pvsconfig
index d17eaa5a0..5f1ffb7cb 100644
--- a/.pvsconfig
+++ b/.pvsconfig
@@ -5,6 +5,7 @@
 //-V:BPTREE_DEF2:779,1086,557,773,512
 //-V:DICT_DEF2:779,524,776,760,1044,1001,729,590,568,747,685
 //-V:ALGO_DEF:1048,747,1044
+//-V:TUPLE_DEF2:524,590,1001,760
 
 # Non-severe malloc/null pointer deref warnings
 //-V::522:2,3
diff --git a/.vscode/example/launch.json b/.vscode/example/launch.json
index c8b0c601d..5c46d3979 100644
--- a/.vscode/example/launch.json
+++ b/.vscode/example/launch.json
@@ -38,6 +38,7 @@
             "postAttachCommands": [
                 // "compare-sections",
                 "source debug/flipperapps.py",
+                "fap-set-debug-elf-root build/latest/.extapps",
                 // "source debug/FreeRTOS/FreeRTOS.py",
                 // "svd_load debug/STM32WB55_CM4.svd"
             ]
@@ -59,6 +60,7 @@
                 "set confirm off",
                 "set mem inaccessible-by-default off",
                 "source debug/flipperapps.py",
+                "fap-set-debug-elf-root build/latest/.extapps",
                 // "compare-sections",
             ]
             // "showDevDebugOutput": "raw",
@@ -76,6 +78,7 @@
             "rtos": "FreeRTOS",
             "postAttachCommands": [
                 "source debug/flipperapps.py",
+                "fap-set-debug-elf-root build/latest/.extapps",
             ]
             // "showDevDebugOutput": "raw",
         },
@@ -95,6 +98,7 @@
             ],
             "postAttachCommands": [
                 "source debug/flipperapps.py",
+                "fap-set-debug-elf-root build/latest/.extapps",
             ],
             // "showDevDebugOutput": "raw",
         },
diff --git a/SConstruct b/SConstruct
index 13a698c81..474175c14 100644
--- a/SConstruct
+++ b/SConstruct
@@ -7,6 +7,7 @@
 # construction of certain targets behind command-line options.
 
 import os
+from fbt.util import path_as_posix
 
 DefaultEnvironment(tools=[])
 
@@ -43,6 +44,7 @@ distenv = coreenv.Clone(
         "jflash",
     ],
     ENV=os.environ,
+    UPDATE_BUNDLE_DIR="dist/${DIST_DIR}/f${TARGET_HW}-update-${DIST_SUFFIX}",
 )
 
 firmware_env = distenv.AddFwProject(
@@ -140,21 +142,28 @@ distenv.Default(basic_dist)
 dist_dir = distenv.GetProjetDirName()
 fap_dist = [
     distenv.Install(
-        f"#/dist/{dist_dir}/apps/debug_elf",
-        firmware_env["FW_EXTAPPS"]["debug"].values(),
+        distenv.Dir(f"#/dist/{dist_dir}/apps/debug_elf"),
+        list(
+            app_artifact.debug
+            for app_artifact in firmware_env["FW_EXTAPPS"].applications.values()
+        ),
     ),
-    *(
-        distenv.Install(f"#/dist/{dist_dir}/apps/{dist_entry[0]}", dist_entry[1])
-        for dist_entry in firmware_env["FW_EXTAPPS"]["dist"].values()
+    distenv.Install(
+        f"#/dist/{dist_dir}/apps",
+        "#/assets/resources/apps",
     ),
 ]
-Depends(fap_dist, firmware_env["FW_EXTAPPS"]["validators"].values())
+Depends(
+    fap_dist,
+    list(
+        app_artifact.validator
+        for app_artifact in firmware_env["FW_EXTAPPS"].applications.values()
+    ),
+)
 Alias("fap_dist", fap_dist)
 # distenv.Default(fap_dist)
 
-distenv.Depends(
-    firmware_env["FW_RESOURCES"], firmware_env["FW_EXTAPPS"]["resources_dist"]
-)
+distenv.Depends(firmware_env["FW_RESOURCES"], firmware_env["FW_EXTAPPS"].resources_dist)
 
 
 # Target for bundling core2 package for qFlipper
@@ -192,6 +201,7 @@ firmware_debug = distenv.PhonyTarget(
     source=firmware_env["FW_ELF"],
     GDBOPTS="${GDBOPTS_BASE}",
     GDBREMOTE="${OPENOCD_GDB_PIPE}",
+    FBT_FAP_DEBUG_ELF_ROOT=path_as_posix(firmware_env.subst("$FBT_FAP_DEBUG_ELF_ROOT")),
 )
 distenv.Depends(firmware_debug, firmware_flash)
 
@@ -201,6 +211,7 @@ distenv.PhonyTarget(
     source=firmware_env["FW_ELF"],
     GDBOPTS="${GDBOPTS_BASE} ${GDBOPTS_BLACKMAGIC}",
     GDBREMOTE="${BLACKMAGIC_ADDR}",
+    FBT_FAP_DEBUG_ELF_ROOT=path_as_posix(firmware_env.subst("$FBT_FAP_DEBUG_ELF_ROOT")),
 )
 
 # Debug alien elf
@@ -209,7 +220,7 @@ distenv.PhonyTarget(
     "${GDBPYCOM}",
     GDBOPTS="${GDBOPTS_BASE}",
     GDBREMOTE="${OPENOCD_GDB_PIPE}",
-    GDBPYOPTS='-ex "source debug/PyCortexMDebug/PyCortexMDebug.py" ',
+    GDBPYOPTS='-ex "source ${FBT_DEBUG_DIR}/PyCortexMDebug/PyCortexMDebug.py" ',
 )
 
 distenv.PhonyTarget(
@@ -230,13 +241,13 @@ distenv.PhonyTarget(
 distenv.PhonyTarget(
     "lint",
     "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py check ${LINT_SOURCES}",
-    LINT_SOURCES=firmware_env["LINT_SOURCES"],
+    LINT_SOURCES=[n.srcnode() for n in firmware_env["LINT_SOURCES"]],
 )
 
 distenv.PhonyTarget(
     "format",
     "${PYTHON3} ${FBT_SCRIPT_DIR}/lint.py format ${LINT_SOURCES}",
-    LINT_SOURCES=firmware_env["LINT_SOURCES"],
+    LINT_SOURCES=[n.srcnode() for n in firmware_env["LINT_SOURCES"]],
 )
 
 # PY_LINT_SOURCES contains recursively-built modules' SConscript files + application manifests
diff --git a/applications/debug/unit_tests/infrared/infrared_test.c b/applications/debug/unit_tests/infrared/infrared_test.c
index 8879c8fc8..2bcb95da8 100644
--- a/applications/debug/unit_tests/infrared/infrared_test.c
+++ b/applications/debug/unit_tests/infrared/infrared_test.c
@@ -424,6 +424,7 @@ MU_TEST(infrared_test_decoder_mixed) {
     infrared_test_run_decoder(InfraredProtocolRC5, 5);
     infrared_test_run_decoder(InfraredProtocolSamsung32, 1);
     infrared_test_run_decoder(InfraredProtocolSIRC, 3);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 1);
 }
 
 MU_TEST(infrared_test_decoder_nec) {
@@ -489,6 +490,15 @@ MU_TEST(infrared_test_encoder_rc6) {
     infrared_test_run_encoder(InfraredProtocolRC6, 1);
 }
 
+MU_TEST(infrared_test_decoder_kaseikyo) {
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 1);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 2);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 3);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 4);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 5);
+    infrared_test_run_decoder(InfraredProtocolKaseikyo, 6);
+}
+
 MU_TEST(infrared_test_encoder_decoder_all) {
     infrared_test_run_encoder_decoder(InfraredProtocolNEC, 1);
     infrared_test_run_encoder_decoder(InfraredProtocolNECext, 1);
@@ -498,6 +508,7 @@ MU_TEST(infrared_test_encoder_decoder_all) {
     infrared_test_run_encoder_decoder(InfraredProtocolRC6, 1);
     infrared_test_run_encoder_decoder(InfraredProtocolRC5, 1);
     infrared_test_run_encoder_decoder(InfraredProtocolSIRC, 1);
+    infrared_test_run_encoder_decoder(InfraredProtocolKaseikyo, 1);
 }
 
 MU_TEST_SUITE(infrared_test) {
@@ -515,6 +526,7 @@ MU_TEST_SUITE(infrared_test) {
     MU_RUN_TEST(infrared_test_decoder_nec);
     MU_RUN_TEST(infrared_test_decoder_samsung32);
     MU_RUN_TEST(infrared_test_decoder_necext1);
+    MU_RUN_TEST(infrared_test_decoder_kaseikyo);
     MU_RUN_TEST(infrared_test_decoder_mixed);
     MU_RUN_TEST(infrared_test_encoder_decoder_all);
 }
diff --git a/applications/debug/unit_tests/nfc/nfc_test.c b/applications/debug/unit_tests/nfc/nfc_test.c
index 8009f6a17..454c11c0f 100644
--- a/applications/debug/unit_tests/nfc/nfc_test.c
+++ b/applications/debug/unit_tests/nfc/nfc_test.c
@@ -5,6 +5,8 @@
 #include <lib/nfc/protocols/nfca.h>
 #include <lib/nfc/helpers/mf_classic_dict.h>
 #include <lib/digital_signal/digital_signal.h>
+#include <lib/nfc/nfc_device.h>
+#include <applications/main/nfc/helpers/nfc_generators.h>
 
 #include <lib/flipper_format/flipper_format_i.h>
 #include <lib/toolbox/stream/file_stream.h>
@@ -17,6 +19,7 @@
 #define NFC_TEST_SIGNAL_SHORT_FILE "nfc_nfca_signal_short.nfc"
 #define NFC_TEST_SIGNAL_LONG_FILE "nfc_nfca_signal_long.nfc"
 #define NFC_TEST_DICT_PATH EXT_PATH("unit_tests/mf_classic_dict.nfc")
+#define NFC_TEST_NFC_DEV_PATH EXT_PATH("unit_tests/nfc/nfc_dev_test.nfc")
 
 static const char* nfc_test_file_type = "Flipper NFC test";
 static const uint32_t nfc_test_file_version = 1;
@@ -287,9 +290,203 @@ MU_TEST(mf_classic_dict_load_test) {
     furi_record_close(RECORD_STORAGE);
 }
 
+MU_TEST(nfca_file_test) {
+    NfcDevice* nfc = nfc_device_alloc();
+    mu_assert(nfc != NULL, "nfc_device_data != NULL assert failed\r\n");
+    nfc->format = NfcDeviceSaveFormatUid;
+
+    // Fill the UID, sak, ATQA and type
+    uint8_t uid[7] = {0x04, 0x01, 0x23, 0x45, 0x67, 0x89, 0x00};
+    memcpy(nfc->dev_data.nfc_data.uid, uid, 7);
+    nfc->dev_data.nfc_data.uid_len = 7;
+
+    nfc->dev_data.nfc_data.sak = 0x08;
+    nfc->dev_data.nfc_data.atqa[0] = 0x00;
+    nfc->dev_data.nfc_data.atqa[1] = 0x04;
+    nfc->dev_data.nfc_data.type = FuriHalNfcTypeA;
+
+    // Save the NFC device data to the file
+    mu_assert(
+        nfc_device_save(nfc, NFC_TEST_NFC_DEV_PATH), "nfc_device_save == true assert failed\r\n");
+    nfc_device_free(nfc);
+
+    // Load the NFC device data from the file
+    NfcDevice* nfc_validate = nfc_device_alloc();
+    mu_assert(
+        nfc_device_load(nfc_validate, NFC_TEST_NFC_DEV_PATH, true),
+        "nfc_device_load == true assert failed\r\n");
+
+    // Check the UID, sak, ATQA and type
+    mu_assert(memcmp(nfc_validate->dev_data.nfc_data.uid, uid, 7) == 0, "uid assert failed\r\n");
+    mu_assert(nfc_validate->dev_data.nfc_data.sak == 0x08, "sak == 0x08 assert failed\r\n");
+    mu_assert(
+        nfc_validate->dev_data.nfc_data.atqa[0] == 0x00, "atqa[0] == 0x00 assert failed\r\n");
+    mu_assert(
+        nfc_validate->dev_data.nfc_data.atqa[1] == 0x04, "atqa[1] == 0x04 assert failed\r\n");
+    mu_assert(
+        nfc_validate->dev_data.nfc_data.type == FuriHalNfcTypeA,
+        "type == FuriHalNfcTypeA assert failed\r\n");
+    nfc_device_free(nfc_validate);
+}
+
+static void mf_classic_generator_test(uint8_t uid_len, MfClassicType type) {
+    NfcDevice* nfc_dev = nfc_device_alloc();
+    mu_assert(nfc_dev != NULL, "nfc_device_data != NULL assert failed\r\n");
+    nfc_dev->format = NfcDeviceSaveFormatMifareClassic;
+
+    // Create a test file
+    nfc_generate_mf_classic(&nfc_dev->dev_data, uid_len, type);
+
+    // Get the uid from generated MFC
+    uint8_t uid[7] = {0};
+    memcpy(uid, nfc_dev->dev_data.nfc_data.uid, uid_len);
+    uint8_t sak = nfc_dev->dev_data.nfc_data.sak;
+    uint8_t atqa[2] = {};
+    memcpy(atqa, nfc_dev->dev_data.nfc_data.atqa, 2);
+
+    MfClassicData* mf_data = &nfc_dev->dev_data.mf_classic_data;
+    // Check the manufacturer block (should be uid[uid_len] + 0xFF[rest])
+    uint8_t manufacturer_block[16] = {0};
+    memcpy(manufacturer_block, nfc_dev->dev_data.mf_classic_data.block[0].value, 16);
+    mu_assert(
+        memcmp(manufacturer_block, uid, uid_len) == 0,
+        "manufacturer_block uid doesn't match the file\r\n");
+    for(uint8_t i = uid_len; i < 16; i++) {
+        mu_assert(
+            manufacturer_block[i] == 0xFF, "manufacturer_block[i] == 0xFF assert failed\r\n");
+    }
+
+    // Reference sector trailers (should be 0xFF[6] + 0xFF + 0x07 + 0x80 + 0x69 + 0xFF[6])
+    uint8_t sector_trailer[16] = {
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0x07,
+        0x80,
+        0x69,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF};
+    // Reference block data
+    uint8_t block_data[16] = {};
+    memset(block_data, 0xff, sizeof(block_data));
+    uint16_t total_blocks = mf_classic_get_total_block_num(type);
+    for(size_t i = 1; i < total_blocks; i++) {
+        if(mf_classic_is_sector_trailer(i)) {
+            mu_assert(
+                memcmp(mf_data->block[i].value, sector_trailer, 16) == 0,
+                "Failed sector trailer compare");
+        } else {
+            mu_assert(memcmp(mf_data->block[i].value, block_data, 16) == 0, "Failed data compare");
+        }
+    }
+    // Save the NFC device data to the file
+    mu_assert(
+        nfc_device_save(nfc_dev, NFC_TEST_NFC_DEV_PATH),
+        "nfc_device_save == true assert failed\r\n");
+    // Verify that key cache is saved
+    FuriString* key_cache_name = furi_string_alloc();
+    furi_string_set_str(key_cache_name, "/ext/nfc/cache/");
+    for(size_t i = 0; i < uid_len; i++) {
+        furi_string_cat_printf(key_cache_name, "%02X", uid[i]);
+    }
+    furi_string_cat_printf(key_cache_name, ".keys");
+    mu_assert(
+        storage_common_stat(nfc_dev->storage, furi_string_get_cstr(key_cache_name), NULL) ==
+            FSE_OK,
+        "Key cache file save failed");
+    nfc_device_free(nfc_dev);
+
+    // Load the NFC device data from the file
+    NfcDevice* nfc_validate = nfc_device_alloc();
+    mu_assert(nfc_validate, "Nfc device alloc assert");
+    mu_assert(
+        nfc_device_load(nfc_validate, NFC_TEST_NFC_DEV_PATH, false),
+        "nfc_device_load == true assert failed\r\n");
+
+    // Check the UID, sak, ATQA and type
+    mu_assert(
+        memcmp(nfc_validate->dev_data.nfc_data.uid, uid, uid_len) == 0,
+        "uid compare assert failed\r\n");
+    mu_assert(nfc_validate->dev_data.nfc_data.sak == sak, "sak compare assert failed\r\n");
+    mu_assert(
+        memcmp(nfc_validate->dev_data.nfc_data.atqa, atqa, 2) == 0,
+        "atqa compare assert failed\r\n");
+    mu_assert(
+        nfc_validate->dev_data.nfc_data.type == FuriHalNfcTypeA,
+        "type == FuriHalNfcTypeA assert failed\r\n");
+
+    // Check the manufacturer block
+    mu_assert(
+        memcmp(nfc_validate->dev_data.mf_classic_data.block[0].value, manufacturer_block, 16) == 0,
+        "manufacturer_block assert failed\r\n");
+    // Check other blocks
+    for(size_t i = 1; i < total_blocks; i++) {
+        if(mf_classic_is_sector_trailer(i)) {
+            mu_assert(
+                memcmp(mf_data->block[i].value, sector_trailer, 16) == 0,
+                "Failed sector trailer compare");
+        } else {
+            mu_assert(memcmp(mf_data->block[i].value, block_data, 16) == 0, "Failed data compare");
+        }
+    }
+    nfc_device_free(nfc_validate);
+
+    // Check saved key cache
+    NfcDevice* nfc_keys = nfc_device_alloc();
+    mu_assert(nfc_validate, "Nfc device alloc assert");
+    nfc_keys->dev_data.nfc_data.uid_len = uid_len;
+    memcpy(nfc_keys->dev_data.nfc_data.uid, uid, uid_len);
+    mu_assert(nfc_device_load_key_cache(nfc_keys), "Failed to load key cache");
+    uint8_t total_sec = mf_classic_get_total_sectors_num(type);
+    uint8_t default_key[6] = {};
+    memset(default_key, 0xff, 6);
+    for(size_t i = 0; i < total_sec; i++) {
+        MfClassicSectorTrailer* sec_tr =
+            mf_classic_get_sector_trailer_by_sector(&nfc_keys->dev_data.mf_classic_data, i);
+        mu_assert(memcmp(sec_tr->key_a, default_key, 6) == 0, "Failed key compare");
+        mu_assert(memcmp(sec_tr->key_b, default_key, 6) == 0, "Failed key compare");
+    }
+
+    // Delete key cache file
+    mu_assert(
+        storage_common_remove(nfc_keys->storage, furi_string_get_cstr(key_cache_name)) == FSE_OK,
+        "Failed to remove key cache file");
+    furi_string_free(key_cache_name);
+    nfc_device_free(nfc_keys);
+}
+
+MU_TEST(mf_classic_1k_4b_file_test) {
+    mf_classic_generator_test(4, MfClassicType1k);
+}
+
+MU_TEST(mf_classic_4k_4b_file_test) {
+    mf_classic_generator_test(4, MfClassicType4k);
+}
+
+MU_TEST(mf_classic_1k_7b_file_test) {
+    mf_classic_generator_test(7, MfClassicType1k);
+}
+
+MU_TEST(mf_classic_4k_7b_file_test) {
+    mf_classic_generator_test(7, MfClassicType4k);
+}
+
 MU_TEST_SUITE(nfc) {
     nfc_test_alloc();
 
+    MU_RUN_TEST(nfca_file_test);
+    MU_RUN_TEST(mf_classic_1k_4b_file_test);
+    MU_RUN_TEST(mf_classic_4k_4b_file_test);
+    MU_RUN_TEST(mf_classic_1k_7b_file_test);
+    MU_RUN_TEST(mf_classic_4k_7b_file_test);
     MU_RUN_TEST(nfc_digital_signal_test);
     MU_RUN_TEST(mf_classic_dict_test);
     MU_RUN_TEST(mf_classic_dict_load_test);
diff --git a/applications/main/archive/scenes/archive_scene_browser.c b/applications/main/archive/scenes/archive_scene_browser.c
index 9dc671617..04f4dcc3a 100644
--- a/applications/main/archive/scenes/archive_scene_browser.c
+++ b/applications/main/archive/scenes/archive_scene_browser.c
@@ -133,7 +133,7 @@ bool archive_scene_browser_on_event(void* context, SceneManagerEvent event) {
         case ArchiveBrowserEventFileMenuRename:
             if(favorites) {
                 browser->callback(ArchiveBrowserEventEnterFavMove, browser->context);
-            } else if((archive_is_known_app(selected->type)) && (selected->is_app == false)) {
+            } else if(selected->is_app == false) {
                 archive_show_file_menu(browser, false);
                 scene_manager_set_scene_state(
                     archive->scene_manager, ArchiveAppSceneBrowser, SCENE_STATE_NEED_REFRESH);
diff --git a/applications/main/archive/scenes/archive_scene_rename.c b/applications/main/archive/scenes/archive_scene_rename.c
index 1451428bd..37f860a9a 100644
--- a/applications/main/archive/scenes/archive_scene_rename.c
+++ b/applications/main/archive/scenes/archive_scene_rename.c
@@ -57,9 +57,11 @@ bool archive_scene_rename_on_event(void* context, SceneManagerEvent event) {
             ArchiveFile_t* file = archive_get_current_file(archive->browser);
 
             FuriString* path_dst;
+
             path_dst = furi_string_alloc();
             path_extract_dirname(path_src, path_dst);
-            furi_string_cat_printf(path_dst, "/%s%s", archive->text_store, known_ext[file->type]);
+            furi_string_cat_printf(
+                path_dst, "/%s%s", archive->text_store, archive->file_extension);
 
             storage_common_rename(fs_api, path_src, furi_string_get_cstr(path_dst));
             furi_record_close(RECORD_STORAGE);
diff --git a/applications/main/archive/views/archive_browser_view.c b/applications/main/archive/views/archive_browser_view.c
index a2e219b95..65be42135 100644
--- a/applications/main/archive/views/archive_browser_view.c
+++ b/applications/main/archive/views/archive_browser_view.c
@@ -65,7 +65,6 @@ static void render_item_menu(Canvas* canvas, ArchiveBrowserViewModel* model) {
     if(!archive_is_known_app(selected->type)) {
         furi_string_set(menu[0], "---");
         furi_string_set(menu[1], "---");
-        furi_string_set(menu[2], "---");
     } else {
         if(model->tab_idx == ArchiveTabFavorites) {
             furi_string_set(menu[2], "Move");
diff --git a/applications/main/bad_usb/application.fam b/applications/main/bad_usb/application.fam
index 4da34f0de..2442dd3aa 100644
--- a/applications/main/bad_usb/application.fam
+++ b/applications/main/bad_usb/application.fam
@@ -11,4 +11,5 @@ App(
     stack_size=2 * 1024,
     icon="A_BadUsb_14",
     order=70,
+    fap_libs=["assets"],
 )
diff --git a/applications/main/bad_usb/bad_usb_script.c b/applications/main/bad_usb/bad_usb_script.c
index 33b3f5030..295cc1c3e 100644
--- a/applications/main/bad_usb/bad_usb_script.c
+++ b/applications/main/bad_usb/bad_usb_script.c
@@ -237,12 +237,8 @@ static int32_t
     const char* line_tmp = furi_string_get_cstr(line);
     bool state = false;
 
-    for(uint32_t i = 0; i < line_len; i++) {
-        if((line_tmp[i] != ' ') && (line_tmp[i] != '\t') && (line_tmp[i] != '\n')) {
-            line_tmp = &line_tmp[i];
-            break; // Skip spaces and tabs
-        }
-        if(i == line_len - 1) return SCRIPT_STATE_NEXT_LINE; // Skip empty lines
+    if(line_len == 0) {
+        return SCRIPT_STATE_NEXT_LINE; // Skip empty lines
     }
 
     FURI_LOG_D(WORKER_TAG, "line:%s", line_tmp);
@@ -338,10 +334,6 @@ static int32_t
         furi_hal_hid_kb_release(key);
         return (0);
     }
-    if(error != NULL) {
-        strncpy(error, "Unknown error", error_len);
-    }
-    return SCRIPT_STATE_ERROR;
 }
 
 static bool ducky_set_usb_id(BadUsbScript* bad_usb, const char* line) {
@@ -454,10 +446,12 @@ static int32_t ducky_script_execute_next(BadUsbScript* bad_usb, File* script_fil
                 bad_usb->st.line_cur++;
                 bad_usb->buf_len = bad_usb->buf_len + bad_usb->buf_start - (i + 1);
                 bad_usb->buf_start = i + 1;
+                furi_string_trim(bad_usb->line);
                 delay_val = ducky_parse_line(
                     bad_usb, bad_usb->line, bad_usb->st.error, sizeof(bad_usb->st.error));
-
-                if(delay_val < 0) {
+                if(delay_val == SCRIPT_STATE_NEXT_LINE) { // Empty line
+                    return 0;
+                } else if(delay_val < 0) {
                     bad_usb->st.error_line = bad_usb->st.line_cur;
                     FURI_LOG_E(WORKER_TAG, "Unknown command at line %u", bad_usb->st.line_cur);
                     return SCRIPT_STATE_ERROR;
@@ -656,7 +650,7 @@ static int32_t bad_usb_worker(void* context) {
 BadUsbScript* bad_usb_script_open(FuriString* file_path) {
     furi_assert(file_path);
 
-    BadUsbScript* bad_usb = malloc(sizeof(BadUsbScript));
+    BadUsbScript* bad_usb = malloc(sizeof(BadUsbScript)); //-V773
     bad_usb->file_path = furi_string_alloc();
     furi_string_set(bad_usb->file_path, file_path);
 
diff --git a/applications/main/fap_loader/fap_loader_app.c b/applications/main/fap_loader/fap_loader_app.c
index 9b4c92335..10cec086a 100644
--- a/applications/main/fap_loader/fap_loader_app.c
+++ b/applications/main/fap_loader/fap_loader_app.c
@@ -155,7 +155,7 @@ static bool fap_loader_select_app(FapLoader* loader) {
 }
 
 static FapLoader* fap_loader_alloc(const char* path) {
-    FapLoader* loader = malloc(sizeof(FapLoader));
+    FapLoader* loader = malloc(sizeof(FapLoader)); //-V773
     loader->fap_path = furi_string_alloc_set(path);
     loader->storage = furi_record_open(RECORD_STORAGE);
     loader->dialogs = furi_record_open(RECORD_DIALOGS);
diff --git a/applications/main/gpio/application.fam b/applications/main/gpio/application.fam
index 64f8db5b0..efeb8b6fe 100644
--- a/applications/main/gpio/application.fam
+++ b/applications/main/gpio/application.fam
@@ -8,4 +8,5 @@ App(
     stack_size=1 * 1024,
     icon="A_GPIO_14",
     order=50,
+    fap_libs=["assets"],
 )
diff --git a/applications/main/gpio/usb_uart_bridge.c b/applications/main/gpio/usb_uart_bridge.c
index a5caceafa..a1ab40329 100644
--- a/applications/main/gpio/usb_uart_bridge.c
+++ b/applications/main/gpio/usb_uart_bridge.c
@@ -184,7 +184,7 @@ static int32_t usb_uart_worker(void* context) {
     while(1) {
         uint32_t events =
             furi_thread_flags_wait(WORKER_ALL_RX_EVENTS, FuriFlagWaitAny, FuriWaitForever);
-        furi_check((events & FuriFlagError) == 0);
+        furi_check(!(events & FuriFlagError));
         if(events & WorkerEvtStop) break;
         if(events & WorkerEvtRxDone) {
             size_t len = furi_stream_buffer_receive(
@@ -288,7 +288,7 @@ static int32_t usb_uart_tx_thread(void* context) {
     while(1) {
         uint32_t events =
             furi_thread_flags_wait(WORKER_ALL_TX_EVENTS, FuriFlagWaitAny, FuriWaitForever);
-        furi_check((events & FuriFlagError) == 0);
+        furi_check(!(events & FuriFlagError));
         if(events & WorkerEvtTxStop) break;
         if(events & WorkerEvtCdcRx) {
             furi_check(furi_mutex_acquire(usb_uart->usb_mutex, FuriWaitForever) == FuriStatusOk);
diff --git a/applications/main/ibutton/application.fam b/applications/main/ibutton/application.fam
index 0bc6f8a9b..77bb9a33c 100644
--- a/applications/main/ibutton/application.fam
+++ b/applications/main/ibutton/application.fam
@@ -12,6 +12,7 @@ App(
     icon="A_iButton_14",
     stack_size=2 * 1024,
     order=60,
+    fap_libs=["assets"],
 )
 
 App(
diff --git a/applications/main/ibutton/scenes/ibutton_scene_delete_success.c b/applications/main/ibutton/scenes/ibutton_scene_delete_success.c
index 8b7d9dfc0..9ff165e4a 100644
--- a/applications/main/ibutton/scenes/ibutton_scene_delete_success.c
+++ b/applications/main/ibutton/scenes/ibutton_scene_delete_success.c
@@ -39,10 +39,5 @@ void ibutton_scene_delete_success_on_exit(void* context) {
     iButton* ibutton = context;
     Popup* popup = ibutton->popup;
 
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
+    popup_reset(popup);
 }
diff --git a/applications/main/ibutton/scenes/ibutton_scene_save_success.c b/applications/main/ibutton/scenes/ibutton_scene_save_success.c
index e0b9b3c47..8b16d2929 100644
--- a/applications/main/ibutton/scenes/ibutton_scene_save_success.c
+++ b/applications/main/ibutton/scenes/ibutton_scene_save_success.c
@@ -39,10 +39,5 @@ void ibutton_scene_save_success_on_exit(void* context) {
     iButton* ibutton = context;
     Popup* popup = ibutton->popup;
 
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
+    popup_reset(popup);
 }
diff --git a/applications/main/ibutton/scenes/ibutton_scene_write_success.c b/applications/main/ibutton/scenes/ibutton_scene_write_success.c
index 3acb1dea0..17cd53d08 100644
--- a/applications/main/ibutton/scenes/ibutton_scene_write_success.c
+++ b/applications/main/ibutton/scenes/ibutton_scene_write_success.c
@@ -43,10 +43,5 @@ void ibutton_scene_write_success_on_exit(void* context) {
     iButton* ibutton = context;
     Popup* popup = ibutton->popup;
 
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
+    popup_reset(popup);
 }
diff --git a/applications/main/infrared/application.fam b/applications/main/infrared/application.fam
index 6f76ed429..9c5eaf392 100644
--- a/applications/main/infrared/application.fam
+++ b/applications/main/infrared/application.fam
@@ -12,6 +12,7 @@ App(
     icon="A_Infrared_14",
     stack_size=3 * 1024,
     order=40,
+    fap_libs=["assets"],
 )
 
 App(
diff --git a/applications/main/lfrfid/application.fam b/applications/main/lfrfid/application.fam
index 4a1498181..150a6f3db 100644
--- a/applications/main/lfrfid/application.fam
+++ b/applications/main/lfrfid/application.fam
@@ -14,6 +14,7 @@ App(
     icon="A_125khz_14",
     stack_size=2 * 1024,
     order=20,
+    fap_libs=["assets"],
 )
 
 App(
diff --git a/applications/main/lfrfid/lfrfid.c b/applications/main/lfrfid/lfrfid.c
index 513227306..d391c5e89 100644
--- a/applications/main/lfrfid/lfrfid.c
+++ b/applications/main/lfrfid/lfrfid.c
@@ -32,7 +32,7 @@ static void rpc_command_callback(RpcAppSystemEvent rpc_event, void* context) {
 }
 
 static LfRfid* lfrfid_alloc() {
-    LfRfid* lfrfid = malloc(sizeof(LfRfid));
+    LfRfid* lfrfid = malloc(sizeof(LfRfid)); //-V773
 
     lfrfid->storage = furi_record_open(RECORD_STORAGE);
     lfrfid->dialogs = furi_record_open(RECORD_DIALOGS);
diff --git a/applications/main/nfc/helpers/nfc_generators.c b/applications/main/nfc/helpers/nfc_generators.c
index 11083b9f0..5f0527c6a 100644
--- a/applications/main/nfc/helpers/nfc_generators.c
+++ b/applications/main/nfc/helpers/nfc_generators.c
@@ -314,7 +314,7 @@ static void nfc_generate_ntag_i2c_plus_2k(NfcDeviceData* data) {
     mful->version.storage_size = 0x15;
 }
 
-static void nfc_generate_mf_classic(NfcDeviceData* data, uint8_t uid_len, MfClassicType type) {
+void nfc_generate_mf_classic(NfcDeviceData* data, uint8_t uid_len, MfClassicType type) {
     nfc_generate_common_start(data);
     nfc_generate_mf_classic_common(data, uid_len, type);
 
@@ -337,6 +337,9 @@ static void nfc_generate_mf_classic(NfcDeviceData* data, uint8_t uid_len, MfClas
             }
             mf_classic_set_block_read(mfc, i, &mfc->block[i]);
         }
+        // Set SAK to 18
+        data->nfc_data.sak = 0x18;
+
     } else if(type == MfClassicType1k) {
         // Set every block to 0xFF
         for(uint16_t i = 1; i < MF_CLASSIC_1K_TOTAL_SECTORS_NUM * 4; i += 1) {
@@ -347,6 +350,8 @@ static void nfc_generate_mf_classic(NfcDeviceData* data, uint8_t uid_len, MfClas
             }
             mf_classic_set_block_read(mfc, i, &mfc->block[i]);
         }
+        // Set SAK to 08
+        data->nfc_data.sak = 0x08;
     }
 
     mfc->type = type;
diff --git a/applications/main/nfc/helpers/nfc_generators.h b/applications/main/nfc/helpers/nfc_generators.h
index 10a05591b..362a19b1e 100644
--- a/applications/main/nfc/helpers/nfc_generators.h
+++ b/applications/main/nfc/helpers/nfc_generators.h
@@ -11,3 +11,5 @@ struct NfcGenerator {
 };
 
 extern const NfcGenerator* const nfc_generators[];
+
+void nfc_generate_mf_classic(NfcDeviceData* data, uint8_t uid_len, MfClassicType type);
diff --git a/applications/main/nfc/nfc.c b/applications/main/nfc/nfc.c
index 55c68a450..0dd071bc4 100644
--- a/applications/main/nfc/nfc.c
+++ b/applications/main/nfc/nfc.c
@@ -116,7 +116,9 @@ void nfc_free(Nfc* nfc) {
         // Stop worker
         nfc_worker_stop(nfc->worker);
         // Save data in shadow file
-        nfc_device_save_shadow(nfc->dev, nfc->dev->dev_name);
+        if(furi_string_size(nfc->dev->load_path)) {
+            nfc_device_save_shadow(nfc->dev, furi_string_get_cstr(nfc->dev->load_path));
+        }
     }
     if(nfc->rpc_ctx) {
         rpc_system_app_send_exited(nfc->rpc_ctx);
@@ -218,6 +220,13 @@ void nfc_blink_stop(Nfc* nfc) {
     notification_message(nfc->notifications, &sequence_blink_stop);
 }
 
+bool nfc_save_file(Nfc* nfc) {
+    furi_string_printf(
+        nfc->dev->load_path, "%s/%s%s", NFC_APP_FOLDER, nfc->dev->dev_name, NFC_APP_EXTENSION);
+    bool file_saved = nfc_device_save(nfc->dev, furi_string_get_cstr(nfc->dev->load_path));
+    return file_saved;
+}
+
 void nfc_show_loading_popup(void* context, bool show) {
     Nfc* nfc = context;
     TaskHandle_t timer_task = xTaskGetHandle(configTIMER_SERVICE_TASK_NAME);
diff --git a/applications/main/nfc/nfc_i.h b/applications/main/nfc/nfc_i.h
index e9b36a3e9..57eefbf67 100644
--- a/applications/main/nfc/nfc_i.h
+++ b/applications/main/nfc/nfc_i.h
@@ -114,4 +114,6 @@ void nfc_blink_detect_start(Nfc* nfc);
 
 void nfc_blink_stop(Nfc* nfc);
 
+bool nfc_save_file(Nfc* nfc);
+
 void nfc_show_loading_popup(void* context, bool show);
diff --git a/applications/main/nfc/scenes/nfc_scene_config.h b/applications/main/nfc/scenes/nfc_scene_config.h
index 9b922add2..49c8412c5 100644
--- a/applications/main/nfc/scenes/nfc_scene_config.h
+++ b/applications/main/nfc/scenes/nfc_scene_config.h
@@ -60,3 +60,4 @@ ADD_SCENE(nfc, detect_reader, DetectReader)
 ADD_SCENE(nfc, mfkey_nonces_info, MfkeyNoncesInfo)
 ADD_SCENE(nfc, mfkey_complete, MfkeyComplete)
 ADD_SCENE(nfc, nfc_data_info, NfcDataInfo)
+ADD_SCENE(nfc, read_card_type, ReadCardType)
diff --git a/applications/main/nfc/scenes/nfc_scene_exit_confirm.c b/applications/main/nfc/scenes/nfc_scene_exit_confirm.c
index b22dd42a1..3ce4f6de8 100644
--- a/applications/main/nfc/scenes/nfc_scene_exit_confirm.c
+++ b/applications/main/nfc/scenes/nfc_scene_exit_confirm.c
@@ -29,8 +29,13 @@ bool nfc_scene_exit_confirm_on_event(void* context, SceneManagerEvent event) {
         if(event.event == DialogExResultRight) {
             consumed = scene_manager_previous_scene(nfc->scene_manager);
         } else if(event.event == DialogExResultLeft) {
-            consumed = scene_manager_search_and_switch_to_previous_scene(
-                nfc->scene_manager, NfcSceneStart);
+            if(scene_manager_has_previous_scene(nfc->scene_manager, NfcSceneReadCardType)) {
+                consumed = scene_manager_search_and_switch_to_previous_scene(
+                    nfc->scene_manager, NfcSceneReadCardType);
+            } else {
+                consumed = scene_manager_search_and_switch_to_previous_scene(
+                    nfc->scene_manager, NfcSceneStart);
+            }
         }
     } else if(event.type == SceneManagerEventTypeBack) {
         consumed = true;
diff --git a/applications/main/nfc/scenes/nfc_scene_extra_actions.c b/applications/main/nfc/scenes/nfc_scene_extra_actions.c
index e888e9d35..fc6021d73 100644
--- a/applications/main/nfc/scenes/nfc_scene_extra_actions.c
+++ b/applications/main/nfc/scenes/nfc_scene_extra_actions.c
@@ -1,6 +1,7 @@
 #include "../nfc_i.h"
 
 enum SubmenuIndex {
+    SubmenuIndexReadCardType,
     SubmenuIndexMfClassicKeys,
     SubmenuIndexMfUltralightUnlock,
 };
@@ -15,6 +16,12 @@ void nfc_scene_extra_actions_on_enter(void* context) {
     Nfc* nfc = context;
     Submenu* submenu = nfc->submenu;
 
+    submenu_add_item(
+        submenu,
+        "Read Specific Card Type",
+        SubmenuIndexReadCardType,
+        nfc_scene_extra_actions_submenu_callback,
+        nfc);
     submenu_add_item(
         submenu,
         "Mifare Classic Keys",
@@ -44,9 +51,15 @@ bool nfc_scene_extra_actions_on_event(void* context, SceneManagerEvent event) {
             consumed = true;
         } else if(event.event == SubmenuIndexMfUltralightUnlock) {
             scene_manager_next_scene(nfc->scene_manager, NfcSceneMfUltralightUnlockMenu);
+            consumed = true;
+        } else if(event.event == SubmenuIndexReadCardType) {
+            scene_manager_set_scene_state(nfc->scene_manager, NfcSceneReadCardType, 0);
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneReadCardType);
+            consumed = true;
         }
         scene_manager_set_scene_state(nfc->scene_manager, NfcSceneExtraActions, event.event);
     }
+
     return consumed;
 }
 
diff --git a/applications/main/nfc/scenes/nfc_scene_file_select.c b/applications/main/nfc/scenes/nfc_scene_file_select.c
index 693fdec20..374a933d1 100644
--- a/applications/main/nfc/scenes/nfc_scene_file_select.c
+++ b/applications/main/nfc/scenes/nfc_scene_file_select.c
@@ -5,6 +5,9 @@ void nfc_scene_file_select_on_enter(void* context) {
     Nfc* nfc = context;
     // Process file_select return
     nfc_device_set_loading_callback(nfc->dev, nfc_show_loading_popup, nfc);
+    if(!furi_string_size(nfc->dev->load_path)) {
+        furi_string_set_str(nfc->dev->load_path, NFC_APP_FOLDER);
+    }
     if(nfc_file_select(nfc->dev)) {
         scene_manager_set_scene_state(nfc->scene_manager, NfcSceneSavedMenu, 0);
         scene_manager_next_scene(nfc->scene_manager, NfcSceneSavedMenu);
diff --git a/applications/main/nfc/scenes/nfc_scene_mf_classic_emulate.c b/applications/main/nfc/scenes/nfc_scene_mf_classic_emulate.c
index e514fa728..68eda7040 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_classic_emulate.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_classic_emulate.c
@@ -48,7 +48,10 @@ bool nfc_scene_mf_classic_emulate_on_event(void* context, SceneManagerEvent even
            NFC_MF_CLASSIC_DATA_CHANGED) {
             scene_manager_set_scene_state(
                 nfc->scene_manager, NfcSceneMfClassicEmulate, NFC_MF_CLASSIC_DATA_NOT_CHANGED);
-            nfc_device_save_shadow(nfc->dev, nfc->dev->dev_name);
+            // Save shadow file
+            if(furi_string_size(nfc->dev->load_path)) {
+                nfc_device_save_shadow(nfc->dev, furi_string_get_cstr(nfc->dev->load_path));
+            }
         }
         consumed = false;
     }
diff --git a/applications/main/nfc/scenes/nfc_scene_mf_classic_read_success.c b/applications/main/nfc/scenes/nfc_scene_mf_classic_read_success.c
index ae31e92cc..444c9a540 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_classic_read_success.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_classic_read_success.c
@@ -24,7 +24,7 @@ void nfc_scene_mf_classic_read_success_on_enter(void* context) {
     widget_add_button_element(
         widget, GuiButtonTypeRight, "More", nfc_scene_mf_classic_read_success_widget_callback, nfc);
 
-    FuriString* temp_str;
+    FuriString* temp_str = NULL;
     if(furi_string_size(nfc->dev->dev_data.parsed_data)) {
         temp_str = furi_string_alloc_set(nfc->dev->dev_data.parsed_data);
     } else {
diff --git a/applications/main/nfc/scenes/nfc_scene_mf_classic_update.c b/applications/main/nfc/scenes/nfc_scene_mf_classic_update.c
index dd3a6f7d5..aacf77f77 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_classic_update.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_classic_update.c
@@ -57,7 +57,7 @@ bool nfc_scene_mf_classic_update_on_event(void* context, SceneManagerEvent event
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == NfcWorkerEventSuccess) {
             nfc_worker_stop(nfc->worker);
-            if(nfc_device_save_shadow(nfc->dev, nfc->dev->dev_name)) {
+            if(nfc_device_save_shadow(nfc->dev, furi_string_get_cstr(nfc->dev->load_path))) {
                 scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicUpdateSuccess);
             } else {
                 scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWrongCard);
diff --git a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_emulate.c b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_emulate.c
index e84fb3927..adcadaaf2 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_emulate.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_emulate.c
@@ -48,7 +48,10 @@ bool nfc_scene_mf_ultralight_emulate_on_event(void* context, SceneManagerEvent e
            NFC_MF_UL_DATA_CHANGED) {
             scene_manager_set_scene_state(
                 nfc->scene_manager, NfcSceneMfUltralightEmulate, NFC_MF_UL_DATA_NOT_CHANGED);
-            nfc_device_save_shadow(nfc->dev, nfc->dev->dev_name);
+            // Save shadow file
+            if(furi_string_size(nfc->dev->load_path)) {
+                nfc_device_save_shadow(nfc->dev, furi_string_get_cstr(nfc->dev->load_path));
+            }
         }
         consumed = false;
     }
diff --git a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_read_success.c b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_read_success.c
index 63bffbf36..cb5ccd6e8 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_read_success.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_read_success.c
@@ -31,7 +31,7 @@ void nfc_scene_mf_ultralight_read_success_on_enter(void* context) {
         nfc_scene_mf_ultralight_read_success_widget_callback,
         nfc);
 
-    FuriString* temp_str;
+    FuriString* temp_str = NULL;
     if(furi_string_size(nfc->dev->dev_data.parsed_data)) {
         temp_str = furi_string_alloc_set(nfc->dev->dev_data.parsed_data);
     } else {
diff --git a/applications/main/nfc/scenes/nfc_scene_read_card_type.c b/applications/main/nfc/scenes/nfc_scene_read_card_type.c
new file mode 100644
index 000000000..94262aa1e
--- /dev/null
+++ b/applications/main/nfc/scenes/nfc_scene_read_card_type.c
@@ -0,0 +1,97 @@
+#include "../nfc_i.h"
+#include "nfc_worker_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexReadMifareClassic,
+    SubmenuIndexReadMifareDesfire,
+    SubmenuIndexReadMfUltralight,
+    SubmenuIndexReadEMV,
+    SubmenuIndexReadNFCA,
+};
+
+void nfc_scene_read_card_type_submenu_callback(void* context, uint32_t index) {
+    Nfc* nfc = context;
+
+    view_dispatcher_send_custom_event(nfc->view_dispatcher, index);
+}
+
+void nfc_scene_read_card_type_on_enter(void* context) {
+    Nfc* nfc = context;
+    Submenu* submenu = nfc->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Read Mifare Classic",
+        SubmenuIndexReadMifareClassic,
+        nfc_scene_read_card_type_submenu_callback,
+        nfc);
+    submenu_add_item(
+        submenu,
+        "Read Mifare DESFire",
+        SubmenuIndexReadMifareDesfire,
+        nfc_scene_read_card_type_submenu_callback,
+        nfc);
+    submenu_add_item(
+        submenu,
+        "Read NTAG/Ultralight",
+        SubmenuIndexReadMfUltralight,
+        nfc_scene_read_card_type_submenu_callback,
+        nfc);
+    submenu_add_item(
+        submenu,
+        "Read EMV card",
+        SubmenuIndexReadEMV,
+        nfc_scene_read_card_type_submenu_callback,
+        nfc);
+    submenu_add_item(
+        submenu,
+        "Read NFC-A data",
+        SubmenuIndexReadNFCA,
+        nfc_scene_read_card_type_submenu_callback,
+        nfc);
+    uint32_t state = scene_manager_get_scene_state(nfc->scene_manager, NfcSceneReadCardType);
+    submenu_set_selected_item(submenu, state);
+
+    view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewMenu);
+}
+
+bool nfc_scene_read_card_type_on_event(void* context, SceneManagerEvent event) {
+    Nfc* nfc = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == SubmenuIndexReadMifareClassic) {
+            nfc->dev->dev_data.read_mode = NfcReadModeMfClassic;
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
+            consumed = true;
+        }
+        if(event.event == SubmenuIndexReadMifareDesfire) {
+            nfc->dev->dev_data.read_mode = NfcReadModeMfDesfire;
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
+            consumed = true;
+        }
+        if(event.event == SubmenuIndexReadMfUltralight) {
+            nfc->dev->dev_data.read_mode = NfcReadModeMfUltralight;
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
+            consumed = true;
+        }
+        if(event.event == SubmenuIndexReadEMV) {
+            nfc->dev->dev_data.read_mode = NfcReadModeEMV;
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
+            consumed = true;
+        }
+        if(event.event == SubmenuIndexReadNFCA) {
+            nfc->dev->dev_data.read_mode = NfcReadModeNFCA;
+            scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
+            consumed = true;
+        }
+        scene_manager_set_scene_state(nfc->scene_manager, NfcSceneReadCardType, event.event);
+    }
+    return consumed;
+}
+
+void nfc_scene_read_card_type_on_exit(void* context) {
+    Nfc* nfc = context;
+
+    submenu_reset(nfc->submenu);
+}
diff --git a/applications/main/nfc/scenes/nfc_scene_save_name.c b/applications/main/nfc/scenes/nfc_scene_save_name.c
index 791f8d99b..ca4b1a350 100644
--- a/applications/main/nfc/scenes/nfc_scene_save_name.c
+++ b/applications/main/nfc/scenes/nfc_scene_save_name.c
@@ -62,7 +62,7 @@ bool nfc_scene_save_name_on_event(void* context, SceneManagerEvent event) {
                 nfc->dev->dev_data.nfc_data = nfc->dev_edit_data;
             }
             strlcpy(nfc->dev->dev_name, nfc->text_store, strlen(nfc->text_store) + 1);
-            if(nfc_device_save(nfc->dev, nfc->text_store)) {
+            if(nfc_save_file(nfc)) {
                 scene_manager_next_scene(nfc->scene_manager, NfcSceneSaveSuccess);
                 if(!scene_manager_has_previous_scene(nfc->scene_manager, NfcSceneSavedMenu)) {
                     // Nothing, do not count editing as saving
diff --git a/applications/main/nfc/scenes/nfc_scene_set_uid.c b/applications/main/nfc/scenes/nfc_scene_set_uid.c
index 1d3fb5eb9..5f0f52f6e 100644
--- a/applications/main/nfc/scenes/nfc_scene_set_uid.c
+++ b/applications/main/nfc/scenes/nfc_scene_set_uid.c
@@ -31,7 +31,7 @@ bool nfc_scene_set_uid_on_event(void* context, SceneManagerEvent event) {
         if(event.event == NfcCustomEventByteInputDone) {
             if(scene_manager_has_previous_scene(nfc->scene_manager, NfcSceneSavedMenu)) {
                 nfc->dev->dev_data.nfc_data = nfc->dev_edit_data;
-                if(nfc_device_save(nfc->dev, nfc->dev->dev_name)) {
+                if(nfc_save_file(nfc)) {
                     scene_manager_next_scene(nfc->scene_manager, NfcSceneSaveSuccess);
                     consumed = true;
                 }
@@ -41,6 +41,7 @@ bool nfc_scene_set_uid_on_event(void* context, SceneManagerEvent event) {
             }
         }
     }
+
     return consumed;
 }
 
diff --git a/applications/main/nfc/scenes/nfc_scene_start.c b/applications/main/nfc/scenes/nfc_scene_start.c
index 028f85ae0..f8b9f52c6 100644
--- a/applications/main/nfc/scenes/nfc_scene_start.c
+++ b/applications/main/nfc/scenes/nfc_scene_start.c
@@ -1,4 +1,5 @@
 #include "../nfc_i.h"
+#include "nfc_worker_i.h"
 #include <dolphin/dolphin.h>
 
 enum SubmenuIndex {
@@ -47,6 +48,7 @@ bool nfc_scene_start_on_event(void* context, SceneManagerEvent event) {
 
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == SubmenuIndexRead) {
+            nfc->dev->dev_data.read_mode = NfcReadModeAuto;
             scene_manager_next_scene(nfc->scene_manager, NfcSceneRead);
             DOLPHIN_DEED(DolphinDeedNfcRead);
             consumed = true;
diff --git a/applications/main/subghz/scenes/subghz_scene_delete_success.c b/applications/main/subghz/scenes/subghz_scene_delete_success.c
index d6e1f8dd4..4f98b6a39 100644
--- a/applications/main/subghz/scenes/subghz_scene_delete_success.c
+++ b/applications/main/subghz/scenes/subghz_scene_delete_success.c
@@ -44,14 +44,7 @@ bool subghz_scene_delete_success_on_event(void* context, SceneManagerEvent event
 
 void subghz_scene_delete_success_on_exit(void* context) {
     SubGhz* subghz = context;
-
-    // Clear view
     Popup* popup = subghz->popup;
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-    popup_set_callback(popup, NULL);
-    popup_set_context(popup, NULL);
-    popup_set_timeout(popup, 0);
-    popup_disable_timeout(popup);
+
+    popup_reset(popup);
 }
diff --git a/applications/main/subghz/scenes/subghz_scene_more_raw.c b/applications/main/subghz/scenes/subghz_scene_more_raw.c
index d75ab13c7..864be1ed1 100644
--- a/applications/main/subghz/scenes/subghz_scene_more_raw.c
+++ b/applications/main/subghz/scenes/subghz_scene_more_raw.c
@@ -38,18 +38,34 @@ bool subghz_scene_more_raw_on_event(void* context, SceneManagerEvent event) {
 
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == SubmenuIndexDelete) {
-            scene_manager_set_scene_state(
-                subghz->scene_manager, SubGhzSceneReadRAW, SubGhzCustomEventManagerNoSet);
-            scene_manager_set_scene_state(
-                subghz->scene_manager, SubGhzSceneMoreRAW, SubmenuIndexDelete);
-            scene_manager_next_scene(subghz->scene_manager, SubGhzSceneDeleteRAW);
-            return true;
+            if(subghz_file_available(subghz)) {
+                scene_manager_set_scene_state(
+                    subghz->scene_manager, SubGhzSceneReadRAW, SubGhzCustomEventManagerNoSet);
+                scene_manager_set_scene_state(
+                    subghz->scene_manager, SubGhzSceneMoreRAW, SubmenuIndexDelete);
+                scene_manager_next_scene(subghz->scene_manager, SubGhzSceneDeleteRAW);
+                return true;
+            } else {
+                if(!scene_manager_search_and_switch_to_previous_scene(
+                       subghz->scene_manager, SubGhzSceneStart)) {
+                    scene_manager_stop(subghz->scene_manager);
+                    view_dispatcher_stop(subghz->view_dispatcher);
+                }
+            }
         } else if(event.event == SubmenuIndexEdit) {
-            furi_string_reset(subghz->file_path_tmp);
-            scene_manager_set_scene_state(
-                subghz->scene_manager, SubGhzSceneMoreRAW, SubmenuIndexEdit);
-            scene_manager_next_scene(subghz->scene_manager, SubGhzSceneSaveName);
-            return true;
+            if(subghz_file_available(subghz)) {
+                furi_string_reset(subghz->file_path_tmp);
+                scene_manager_set_scene_state(
+                    subghz->scene_manager, SubGhzSceneMoreRAW, SubmenuIndexEdit);
+                scene_manager_next_scene(subghz->scene_manager, SubGhzSceneSaveName);
+                return true;
+            } else {
+                if(!scene_manager_search_and_switch_to_previous_scene(
+                       subghz->scene_manager, SubGhzSceneStart)) {
+                    scene_manager_stop(subghz->scene_manager);
+                    view_dispatcher_stop(subghz->view_dispatcher);
+                }
+            }
         }
     }
     return false;
diff --git a/applications/main/subghz/scenes/subghz_scene_read_raw.c b/applications/main/subghz/scenes/subghz_scene_read_raw.c
index ba9ce803b..2e5ba0966 100644
--- a/applications/main/subghz/scenes/subghz_scene_read_raw.c
+++ b/applications/main/subghz/scenes/subghz_scene_read_raw.c
@@ -198,20 +198,28 @@ bool subghz_scene_read_raw_on_event(void* context, SceneManagerEvent event) {
             break;
 
         case SubGhzCustomEventViewReadRAWMore:
-            if(subghz_scene_read_raw_update_filename(subghz)) {
-                scene_manager_set_scene_state(
-                    subghz->scene_manager, SubGhzSceneReadRAW, SubGhzCustomEventManagerSet);
-                subghz->txrx->rx_key_state = SubGhzRxKeyStateRAWLoad;
-                scene_manager_next_scene(subghz->scene_manager, SubGhzSceneMoreRAW);
-                consumed = true;
+            if(subghz_file_available(subghz)) {
+                if(subghz_scene_read_raw_update_filename(subghz)) {
+                    scene_manager_set_scene_state(
+                        subghz->scene_manager, SubGhzSceneReadRAW, SubGhzCustomEventManagerSet);
+                    subghz->txrx->rx_key_state = SubGhzRxKeyStateRAWLoad;
+                    scene_manager_next_scene(subghz->scene_manager, SubGhzSceneMoreRAW);
+                    consumed = true;
+                } else {
+                    furi_crash("SubGhz: RAW file name update error.");
+                }
             } else {
-                furi_crash("SubGhz: RAW file name update error.");
+                if(!scene_manager_search_and_switch_to_previous_scene(
+                       subghz->scene_manager, SubGhzSceneStart)) {
+                    scene_manager_stop(subghz->scene_manager);
+                    view_dispatcher_stop(subghz->view_dispatcher);
+                }
             }
             break;
 
         case SubGhzCustomEventViewReadRAWSendStart:
 
-            if(subghz_scene_read_raw_update_filename(subghz)) {
+            if(subghz_file_available(subghz) && subghz_scene_read_raw_update_filename(subghz)) {
                 //start send
                 subghz->state_notifications = SubGhzNotificationStateIDLE;
                 if(subghz->txrx->txrx_state == SubGhzTxRxStateRx) {
@@ -238,6 +246,12 @@ bool subghz_scene_read_raw_on_event(void* context, SceneManagerEvent event) {
                         subghz->state_notifications = SubGhzNotificationStateTx;
                     }
                 }
+            } else {
+                if(!scene_manager_search_and_switch_to_previous_scene(
+                       subghz->scene_manager, SubGhzSceneStart)) {
+                    scene_manager_stop(subghz->scene_manager);
+                    view_dispatcher_stop(subghz->view_dispatcher);
+                }
             }
             consumed = true;
             break;
@@ -314,11 +328,17 @@ bool subghz_scene_read_raw_on_event(void* context, SceneManagerEvent event) {
             break;
 
         case SubGhzCustomEventViewReadRAWSave:
-            if(subghz_scene_read_raw_update_filename(subghz)) {
+            if(subghz_file_available(subghz) && subghz_scene_read_raw_update_filename(subghz)) {
                 scene_manager_set_scene_state(
                     subghz->scene_manager, SubGhzSceneReadRAW, SubGhzCustomEventManagerSetRAW);
                 subghz->txrx->rx_key_state = SubGhzRxKeyStateBack;
                 scene_manager_next_scene(subghz->scene_manager, SubGhzSceneSaveName);
+            } else {
+                if(!scene_manager_search_and_switch_to_previous_scene(
+                       subghz->scene_manager, SubGhzSceneStart)) {
+                    scene_manager_stop(subghz->scene_manager);
+                    view_dispatcher_stop(subghz->view_dispatcher);
+                }
             }
             consumed = true;
             break;
diff --git a/applications/main/subghz/scenes/subghz_scene_save_success.c b/applications/main/subghz/scenes/subghz_scene_save_success.c
index d32c9271a..2977975f7 100644
--- a/applications/main/subghz/scenes/subghz_scene_save_success.c
+++ b/applications/main/subghz/scenes/subghz_scene_save_success.c
@@ -44,14 +44,7 @@ bool subghz_scene_save_success_on_event(void* context, SceneManagerEvent event)
 
 void subghz_scene_save_success_on_exit(void* context) {
     SubGhz* subghz = context;
-
-    // Clear view
     Popup* popup = subghz->popup;
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-    popup_set_callback(popup, NULL);
-    popup_set_context(popup, NULL);
-    popup_set_timeout(popup, 0);
-    popup_disable_timeout(popup);
+
+    popup_reset(popup);
 }
diff --git a/applications/main/subghz/scenes/subghz_scene_show_error_sub.c b/applications/main/subghz/scenes/subghz_scene_show_error_sub.c
index 2720b2b94..113e7ae74 100644
--- a/applications/main/subghz/scenes/subghz_scene_show_error_sub.c
+++ b/applications/main/subghz/scenes/subghz_scene_show_error_sub.c
@@ -36,16 +36,10 @@ bool subghz_scene_show_error_sub_on_event(void* context, SceneManagerEvent event
 
 void subghz_scene_show_error_sub_on_exit(void* context) {
     SubGhz* subghz = context;
-
-    // Clear view
     Popup* popup = subghz->popup;
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-    popup_set_callback(popup, NULL);
-    popup_set_context(popup, NULL);
-    popup_set_timeout(popup, 0);
-    popup_disable_timeout(popup);
+
+    popup_reset(popup);
+
     furi_string_reset(subghz->error_str);
 
     notification_message(subghz->notifications, &sequence_reset_rgb);
diff --git a/applications/main/subghz/scenes/subghz_scene_show_only_rx.c b/applications/main/subghz/scenes/subghz_scene_show_only_rx.c
index 3bc08e5b4..1907c4192 100644
--- a/applications/main/subghz/scenes/subghz_scene_show_only_rx.c
+++ b/applications/main/subghz/scenes/subghz_scene_show_only_rx.c
@@ -43,14 +43,7 @@ bool subghz_scene_show_only_rx_on_event(void* context, SceneManagerEvent event)
 
 void subghz_scene_show_only_rx_on_exit(void* context) {
     SubGhz* subghz = context;
-
-    // Clear view
     Popup* popup = subghz->popup;
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-    popup_set_callback(popup, NULL);
-    popup_set_context(popup, NULL);
-    popup_set_timeout(popup, 0);
-    popup_disable_timeout(popup);
+
+    popup_reset(popup);
 }
diff --git a/applications/main/subghz/subghz_i.c b/applications/main/subghz/subghz_i.c
index beefd8024..d9070ba8c 100644
--- a/applications/main/subghz/subghz_i.c
+++ b/applications/main/subghz/subghz_i.c
@@ -490,6 +490,23 @@ bool subghz_rename_file(SubGhz* subghz) {
     return ret;
 }
 
+bool subghz_file_available(SubGhz* subghz) {
+    furi_assert(subghz);
+    bool ret = true;
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+
+    FS_Error fs_result =
+        storage_common_stat(storage, furi_string_get_cstr(subghz->file_path), NULL);
+
+    if(fs_result != FSE_OK) {
+        dialog_message_show_storage_error(subghz->dialogs, "File not available\n file/directory");
+        ret = false;
+    }
+
+    furi_record_close(RECORD_STORAGE);
+    return ret;
+}
+
 bool subghz_delete_file(SubGhz* subghz) {
     furi_assert(subghz);
 
@@ -513,12 +530,6 @@ bool subghz_path_is_file(FuriString* path) {
 }
 
 uint32_t subghz_random_serial(void) {
-    static bool rand_generator_inited = false;
-
-    if(!rand_generator_inited) {
-        srand(DWT->CYCCNT);
-        rand_generator_inited = true;
-    }
     return (uint32_t)rand();
 }
 
diff --git a/applications/main/subghz/subghz_i.h b/applications/main/subghz/subghz_i.h
index 46768cf02..0a40196bb 100644
--- a/applications/main/subghz/subghz_i.h
+++ b/applications/main/subghz/subghz_i.h
@@ -124,6 +124,7 @@ bool subghz_save_protocol_to_file(
     const char* dev_file_name);
 bool subghz_load_protocol_from_file(SubGhz* subghz);
 bool subghz_rename_file(SubGhz* subghz);
+bool subghz_file_available(SubGhz* subghz);
 bool subghz_delete_file(SubGhz* subghz);
 void subghz_file_name_clear(SubGhz* subghz);
 bool subghz_path_is_file(FuriString* path);
diff --git a/applications/main/u2f/application.fam b/applications/main/u2f/application.fam
index 6b32e0225..82010ffb4 100644
--- a/applications/main/u2f/application.fam
+++ b/applications/main/u2f/application.fam
@@ -11,4 +11,5 @@ App(
     stack_size=2 * 1024,
     icon="A_U2F_14",
     order=80,
+    fap_libs=["assets"],
 )
diff --git a/applications/main/u2f/u2f_hid.c b/applications/main/u2f/u2f_hid.c
index 4922d6a5a..b6e86384d 100644
--- a/applications/main/u2f/u2f_hid.c
+++ b/applications/main/u2f/u2f_hid.c
@@ -203,7 +203,7 @@ static int32_t u2f_hid_worker(void* context) {
             WorkerEvtStop | WorkerEvtConnect | WorkerEvtDisconnect | WorkerEvtRequest,
             FuriFlagWaitAny,
             FuriWaitForever);
-        furi_check((flags & FuriFlagError) == 0);
+        furi_check(!(flags & FuriFlagError));
         if(flags & WorkerEvtStop) break;
         if(flags & WorkerEvtConnect) {
             u2f_set_state(u2f_hid->u2f_instance, 1);
diff --git a/applications/plugins/dap_link/dap_link.c b/applications/plugins/dap_link/dap_link.c
index 58d032b91..443d77c5e 100644
--- a/applications/plugins/dap_link/dap_link.c
+++ b/applications/plugins/dap_link/dap_link.c
@@ -13,6 +13,8 @@
 #include "dap_config.h"
 #include "gui/dap_gui.h"
 #include "usb/dap_v2_usb.h"
+#include <dialogs/dialogs.h>
+#include "dap_link_icons.h"
 
 /***************************************************************************/
 /****************************** DAP COMMON *********************************/
@@ -495,6 +497,24 @@ DapConfig* dap_app_get_config(DapApp* app) {
 int32_t dap_link_app(void* p) {
     UNUSED(p);
 
+    if(furi_hal_usb_is_locked()) {
+        DialogsApp* dialogs = furi_record_open(RECORD_DIALOGS);
+        DialogMessage* message = dialog_message_alloc();
+        dialog_message_set_header(message, "Connection\nis active!", 3, 2, AlignLeft, AlignTop);
+        dialog_message_set_text(
+            message,
+            "Disconnect from\nPC or phone to\nuse this function.",
+            3,
+            30,
+            AlignLeft,
+            AlignTop);
+        dialog_message_set_icon(message, &I_ActiveConnection_50x64, 78, 0);
+        dialog_message_show(dialogs, message);
+        dialog_message_free(message);
+        furi_record_close(RECORD_DIALOGS);
+        return -1;
+    }
+
     // alloc app
     DapApp* app = dap_app_alloc();
     app_handle = app;
diff --git a/applications/plugins/dap_link/icons/ActiveConnection_50x64.png b/applications/plugins/dap_link/icons/ActiveConnection_50x64.png
new file mode 100644
index 000000000..1d7686ddd
Binary files /dev/null and b/applications/plugins/dap_link/icons/ActiveConnection_50x64.png differ
diff --git a/applications/plugins/nfc_magic/lib/magic/magic.c b/applications/plugins/nfc_magic/lib/magic/magic.c
index 3cfca748b..a922bc7a8 100644
--- a/applications/plugins/nfc_magic/lib/magic/magic.c
+++ b/applications/plugins/nfc_magic/lib/magic/magic.c
@@ -210,5 +210,5 @@ bool magic_wipe() {
 
 void magic_deactivate() {
     furi_hal_nfc_ll_txrx_off();
-    furi_hal_nfc_start_sleep();
+    furi_hal_nfc_sleep();
 }
diff --git a/applications/plugins/nfc_magic/nfc_magic_worker.c b/applications/plugins/nfc_magic/nfc_magic_worker.c
index 0623211e2..0e1f6cea4 100644
--- a/applications/plugins/nfc_magic/nfc_magic_worker.c
+++ b/applications/plugins/nfc_magic/nfc_magic_worker.c
@@ -167,7 +167,6 @@ void nfc_magic_worker_wipe(NfcMagicWorker* nfc_magic_worker) {
         if(!magic_data_access_cmd()) continue;
         if(!magic_write_blk(0, &block)) continue;
         nfc_magic_worker->callback(NfcMagicWorkerEventSuccess, nfc_magic_worker->context);
-        magic_deactivate();
         break;
     }
     magic_deactivate();
diff --git a/applications/plugins/snake_game/snake_game.c b/applications/plugins/snake_game/snake_game.c
index 75b2fc017..da1857edb 100644
--- a/applications/plugins/snake_game/snake_game.c
+++ b/applications/plugins/snake_game/snake_game.c
@@ -286,7 +286,6 @@ static void
 
 int32_t snake_game_app(void* p) {
     UNUSED(p);
-    srand(DWT->CYCCNT);
 
     FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(SnakeEvent));
 
diff --git a/applications/plugins/weather_station/protocols/acurite_592txr.c b/applications/plugins/weather_station/protocols/acurite_592txr.c
index 4d7f59544..5384a3c91 100644
--- a/applications/plugins/weather_station/protocols/acurite_592txr.c
+++ b/applications/plugins/weather_station/protocols/acurite_592txr.c
@@ -293,7 +293,7 @@ void ws_protocol_decoder_acurite_592txr_get_string(void* context, FuriString* ou
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -301,7 +301,6 @@ void ws_protocol_decoder_acurite_592txr_get_string(void* context, FuriString* ou
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/acurite_606tx.c b/applications/plugins/weather_station/protocols/acurite_606tx.c
index 3c9144057..4cb5d18b8 100644
--- a/applications/plugins/weather_station/protocols/acurite_606tx.c
+++ b/applications/plugins/weather_station/protocols/acurite_606tx.c
@@ -234,7 +234,7 @@ void ws_protocol_decoder_acurite_606tx_get_string(void* context, FuriString* out
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -242,7 +242,6 @@ void ws_protocol_decoder_acurite_606tx_get_string(void* context, FuriString* out
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/acurite_609txc.c b/applications/plugins/weather_station/protocols/acurite_609txc.c
new file mode 100644
index 000000000..aeb0785eb
--- /dev/null
+++ b/applications/plugins/weather_station/protocols/acurite_609txc.c
@@ -0,0 +1,247 @@
+#include "acurite_609txc.h"
+
+#define TAG "WSProtocolAcurite_609TXC"
+
+/*
+ * Help
+ * https://github.com/merbanan/rtl_433/blob/5bef4e43133ac4c0e2d18d36f87c52b4f9458453/src/devices/acurite.c#L216
+ *
+ *     0000 1111 | 0011 0000 | 0101 1100 | 0000 0000 | 1110 0111
+ *     iiii iiii | buuu tttt | tttt tttt | hhhh hhhh | cccc cccc
+ * - i: identification; changes on battery switch
+ * - c: checksum (sum of previous by bytes)
+ * - u: unknown
+ * - b: battery low; flag to indicate low battery voltage
+ * - t: temperature; in °C * 10, 12 bit with complement
+ * - h: humidity
+ *
+ */
+
+static const SubGhzBlockConst ws_protocol_acurite_609txc_const = {
+    .te_short = 500,
+    .te_long = 1000,
+    .te_delta = 150,
+    .min_count_bit_for_found = 40,
+};
+
+struct WSProtocolDecoderAcurite_609TXC {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    WSBlockGeneric generic;
+};
+
+struct WSProtocolEncoderAcurite_609TXC {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    WSBlockGeneric generic;
+};
+
+typedef enum {
+    Acurite_609TXCDecoderStepReset = 0,
+    Acurite_609TXCDecoderStepSaveDuration,
+    Acurite_609TXCDecoderStepCheckDuration,
+} Acurite_609TXCDecoderStep;
+
+const SubGhzProtocolDecoder ws_protocol_acurite_609txc_decoder = {
+    .alloc = ws_protocol_decoder_acurite_609txc_alloc,
+    .free = ws_protocol_decoder_acurite_609txc_free,
+
+    .feed = ws_protocol_decoder_acurite_609txc_feed,
+    .reset = ws_protocol_decoder_acurite_609txc_reset,
+
+    .get_hash_data = ws_protocol_decoder_acurite_609txc_get_hash_data,
+    .serialize = ws_protocol_decoder_acurite_609txc_serialize,
+    .deserialize = ws_protocol_decoder_acurite_609txc_deserialize,
+    .get_string = ws_protocol_decoder_acurite_609txc_get_string,
+};
+
+const SubGhzProtocolEncoder ws_protocol_acurite_609txc_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol ws_protocol_acurite_609txc = {
+    .name = WS_PROTOCOL_ACURITE_609TXC_NAME,
+    .type = SubGhzProtocolWeatherStation,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
+            SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
+
+    .decoder = &ws_protocol_acurite_609txc_decoder,
+    .encoder = &ws_protocol_acurite_609txc_encoder,
+};
+
+void* ws_protocol_decoder_acurite_609txc_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    WSProtocolDecoderAcurite_609TXC* instance = malloc(sizeof(WSProtocolDecoderAcurite_609TXC));
+    instance->base.protocol = &ws_protocol_acurite_609txc;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void ws_protocol_decoder_acurite_609txc_free(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    free(instance);
+}
+
+void ws_protocol_decoder_acurite_609txc_reset(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+}
+
+static bool ws_protocol_acurite_609txc_check(WSProtocolDecoderAcurite_609TXC* instance) {
+    if(!instance->decoder.decode_data) return false;
+    uint8_t crc = (uint8_t)(instance->decoder.decode_data >> 32) +
+                  (uint8_t)(instance->decoder.decode_data >> 24) +
+                  (uint8_t)(instance->decoder.decode_data >> 16) +
+                  (uint8_t)(instance->decoder.decode_data >> 8);
+    return (crc == (instance->decoder.decode_data & 0xFF));
+}
+
+/**
+ * Analysis of received data
+ * @param instance Pointer to a WSBlockGeneric* instance
+ */
+static void ws_protocol_acurite_609txc_remote_controller(WSBlockGeneric* instance) {
+    instance->id = (instance->data >> 32) & 0xFF;
+    instance->battery_low = (instance->data >> 31) & 1;
+
+    instance->channel = WS_NO_CHANNEL;
+
+    // Temperature in Celsius is encoded as a 12 bit integer value
+    // multiplied by 10 using the 4th - 6th nybbles (bytes 1 & 2)
+    // negative values are recovered by sign extend from int16_t.
+    int16_t temp_raw =
+        (int16_t)(((instance->data >> 12) & 0xf000) | ((instance->data >> 16) << 4));
+    instance->temp = (temp_raw >> 4) * 0.1f;
+    instance->humidity = (instance->data >> 8) & 0xff;
+    instance->btn = WS_NO_BTN;
+}
+
+void ws_protocol_decoder_acurite_609txc_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case Acurite_609TXCDecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, ws_protocol_acurite_609txc_const.te_short * 17) <
+                        ws_protocol_acurite_609txc_const.te_delta * 8)) {
+            //Found syncPrefix
+            instance->decoder.parser_step = Acurite_609TXCDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+        }
+        break;
+
+    case Acurite_609TXCDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = Acurite_609TXCDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+        }
+        break;
+
+    case Acurite_609TXCDecoderStepCheckDuration:
+        if(!level) {
+            if(DURATION_DIFF(instance->decoder.te_last, ws_protocol_acurite_609txc_const.te_short) <
+               ws_protocol_acurite_609txc_const.te_delta) {
+                if((DURATION_DIFF(duration, ws_protocol_acurite_609txc_const.te_short) <
+                    ws_protocol_acurite_609txc_const.te_delta) ||
+                   (duration > ws_protocol_acurite_609txc_const.te_long * 3)) {
+                    //Found syncPostfix
+                    instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+                    if((instance->decoder.decode_count_bit ==
+                        ws_protocol_acurite_609txc_const.min_count_bit_for_found) &&
+                       ws_protocol_acurite_609txc_check(instance)) {
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                        ws_protocol_acurite_609txc_remote_controller(&instance->generic);
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                    instance->decoder.decode_data = 0;
+                    instance->decoder.decode_count_bit = 0;
+                } else if(
+                    DURATION_DIFF(duration, ws_protocol_acurite_609txc_const.te_long) <
+                    ws_protocol_acurite_609txc_const.te_delta * 2) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                    instance->decoder.parser_step = Acurite_609TXCDecoderStepSaveDuration;
+                } else if(
+                    DURATION_DIFF(duration, ws_protocol_acurite_609txc_const.te_long * 2) <
+                    ws_protocol_acurite_609txc_const.te_delta * 4) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                    instance->decoder.parser_step = Acurite_609TXCDecoderStepSaveDuration;
+                } else {
+                    instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+                }
+            } else {
+                instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+            }
+        } else {
+            instance->decoder.parser_step = Acurite_609TXCDecoderStepReset;
+        }
+        break;
+    }
+}
+
+uint8_t ws_protocol_decoder_acurite_609txc_get_hash_data(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool ws_protocol_decoder_acurite_609txc_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+bool ws_protocol_decoder_acurite_609txc_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    bool ret = false;
+    do {
+        if(!ws_block_generic_deserialize(&instance->generic, flipper_format)) {
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           ws_protocol_acurite_609txc_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        ret = true;
+    } while(false);
+    return ret;
+}
+
+void ws_protocol_decoder_acurite_609txc_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    WSProtocolDecoderAcurite_609TXC* instance = context;
+    furi_string_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%lX%08lX\r\n"
+        "Sn:0x%lX Ch:%d  Bat:%d\r\n"
+        "Temp:%3.1f C Hum:%d%%",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)(instance->generic.data >> 40),
+        (uint32_t)(instance->generic.data),
+        instance->generic.id,
+        instance->generic.channel,
+        instance->generic.battery_low,
+        (double)instance->generic.temp,
+        instance->generic.humidity);
+}
diff --git a/applications/plugins/weather_station/protocols/acurite_609txc.h b/applications/plugins/weather_station/protocols/acurite_609txc.h
new file mode 100644
index 000000000..f87c20e9b
--- /dev/null
+++ b/applications/plugins/weather_station/protocols/acurite_609txc.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include <lib/subghz/protocols/base.h>
+
+#include <lib/subghz/blocks/const.h>
+#include <lib/subghz/blocks/decoder.h>
+#include <lib/subghz/blocks/encoder.h>
+#include "ws_generic.h"
+#include <lib/subghz/blocks/math.h>
+
+#define WS_PROTOCOL_ACURITE_609TXC_NAME "Acurite-609TXC"
+
+typedef struct WSProtocolDecoderAcurite_609TXC WSProtocolDecoderAcurite_609TXC;
+typedef struct WSProtocolEncoderAcurite_609TXC WSProtocolEncoderAcurite_609TXC;
+
+extern const SubGhzProtocolDecoder ws_protocol_acurite_609txc_decoder;
+extern const SubGhzProtocolEncoder ws_protocol_acurite_609txc_encoder;
+extern const SubGhzProtocol ws_protocol_acurite_609txc;
+
+/**
+ * Allocate WSProtocolDecoderAcurite_609TXC.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return WSProtocolDecoderAcurite_609TXC* pointer to a WSProtocolDecoderAcurite_609TXC instance
+ */
+void* ws_protocol_decoder_acurite_609txc_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free WSProtocolDecoderAcurite_609TXC.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ */
+void ws_protocol_decoder_acurite_609txc_free(void* context);
+
+/**
+ * Reset decoder WSProtocolDecoderAcurite_609TXC.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ */
+void ws_protocol_decoder_acurite_609txc_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void ws_protocol_decoder_acurite_609txc_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ * @return hash Hash sum
+ */
+uint8_t ws_protocol_decoder_acurite_609txc_get_hash_data(void* context);
+
+/**
+ * Serialize data WSProtocolDecoderAcurite_609TXC.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool ws_protocol_decoder_acurite_609txc_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data WSProtocolDecoderAcurite_609TXC.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool ws_protocol_decoder_acurite_609txc_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a WSProtocolDecoderAcurite_609TXC instance
+ * @param output Resulting text
+ */
+void ws_protocol_decoder_acurite_609txc_get_string(void* context, FuriString* output);
diff --git a/applications/plugins/weather_station/protocols/ambient_weather.c b/applications/plugins/weather_station/protocols/ambient_weather.c
index 07f5330fc..5ae22b790 100644
--- a/applications/plugins/weather_station/protocols/ambient_weather.c
+++ b/applications/plugins/weather_station/protocols/ambient_weather.c
@@ -200,7 +200,6 @@ void ws_protocol_decoder_ambient_weather_feed(void* context, bool level, uint32_
            ((instance->decoder.decode_data & AMBIENT_WEATHER_PACKET_HEADER_MASK) ==
             AMBIENT_WEATHER_PACKET_HEADER_2)) {
             if(ws_protocol_ambient_weather_check_crc(instance)) {
-                instance->decoder.decode_data = instance->decoder.decode_data;
                 instance->generic.data = instance->decoder.decode_data;
                 instance->generic.data_count_bit =
                     ws_protocol_ambient_weather_const.min_count_bit_for_found;
@@ -264,7 +263,7 @@ void ws_protocol_decoder_ambient_weather_get_string(void* context, FuriString* o
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -272,7 +271,6 @@ void ws_protocol_decoder_ambient_weather_get_string(void* context, FuriString* o
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/gt_wt_03.c b/applications/plugins/weather_station/protocols/gt_wt_03.c
index 04bca9ac1..7831cf069 100644
--- a/applications/plugins/weather_station/protocols/gt_wt_03.c
+++ b/applications/plugins/weather_station/protocols/gt_wt_03.c
@@ -327,7 +327,7 @@ void ws_protocol_decoder_gt_wt_03_get_string(void* context, FuriString* output)
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -335,7 +335,6 @@ void ws_protocol_decoder_gt_wt_03_get_string(void* context, FuriString* output)
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/infactory.c b/applications/plugins/weather_station/protocols/infactory.c
index b08a4e9db..2d444d981 100644
--- a/applications/plugins/weather_station/protocols/infactory.c
+++ b/applications/plugins/weather_station/protocols/infactory.c
@@ -283,7 +283,7 @@ void ws_protocol_decoder_infactory_get_string(void* context, FuriString* output)
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -291,7 +291,6 @@ void ws_protocol_decoder_infactory_get_string(void* context, FuriString* output)
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/lacrosse_tx141thbv2.c b/applications/plugins/weather_station/protocols/lacrosse_tx141thbv2.c
index d4b89be87..e4b612250 100644
--- a/applications/plugins/weather_station/protocols/lacrosse_tx141thbv2.c
+++ b/applications/plugins/weather_station/protocols/lacrosse_tx141thbv2.c
@@ -284,7 +284,7 @@ void ws_protocol_decoder_lacrosse_tx141thbv2_get_string(void* context, FuriStrin
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -292,7 +292,6 @@ void ws_protocol_decoder_lacrosse_tx141thbv2_get_string(void* context, FuriStrin
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/nexus_th.c b/applications/plugins/weather_station/protocols/nexus_th.c
index c3d823eda..7d4a77aea 100644
--- a/applications/plugins/weather_station/protocols/nexus_th.c
+++ b/applications/plugins/weather_station/protocols/nexus_th.c
@@ -247,7 +247,7 @@ void ws_protocol_decoder_nexus_th_get_string(void* context, FuriString* output)
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -255,7 +255,6 @@ void ws_protocol_decoder_nexus_th_get_string(void* context, FuriString* output)
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/protocols/protocol_items.c b/applications/plugins/weather_station/protocols/protocol_items.c
index d7f6458ab..d2b20e51a 100644
--- a/applications/plugins/weather_station/protocols/protocol_items.c
+++ b/applications/plugins/weather_station/protocols/protocol_items.c
@@ -6,6 +6,7 @@ const SubGhzProtocol* weather_station_protocol_registry_items[] = {
     &ws_protocol_nexus_th,
     &ws_protocol_gt_wt_03,
     &ws_protocol_acurite_606tx,
+    &ws_protocol_acurite_609txc,
     &ws_protocol_lacrosse_tx141thbv2,
     &ws_protocol_oregon2,
     &ws_protocol_acurite_592txr,
diff --git a/applications/plugins/weather_station/protocols/protocol_items.h b/applications/plugins/weather_station/protocols/protocol_items.h
index 76c085ab4..45b297e10 100644
--- a/applications/plugins/weather_station/protocols/protocol_items.h
+++ b/applications/plugins/weather_station/protocols/protocol_items.h
@@ -6,6 +6,7 @@
 #include "nexus_th.h"
 #include "gt_wt_03.h"
 #include "acurite_606tx.h"
+#include "acurite_609txc.h"
 #include "lacrosse_tx141thbv2.h"
 #include "oregon2.h"
 #include "acurite_592txr.h"
diff --git a/applications/plugins/weather_station/protocols/thermopro_tx4.c b/applications/plugins/weather_station/protocols/thermopro_tx4.c
index 9a2eacb2f..0882bc33d 100644
--- a/applications/plugins/weather_station/protocols/thermopro_tx4.c
+++ b/applications/plugins/weather_station/protocols/thermopro_tx4.c
@@ -246,7 +246,7 @@ void ws_protocol_decoder_thermopro_tx4_get_string(void* context, FuriString* out
         "%s %dbit\r\n"
         "Key:0x%lX%08lX\r\n"
         "Sn:0x%lX Ch:%d  Bat:%d\r\n"
-        "Temp:%d.%d C Hum:%d%%",
+        "Temp:%3.1f C Hum:%d%%",
         instance->generic.protocol_name,
         instance->generic.data_count_bit,
         (uint32_t)(instance->generic.data >> 32),
@@ -254,7 +254,6 @@ void ws_protocol_decoder_thermopro_tx4_get_string(void* context, FuriString* out
         instance->generic.id,
         instance->generic.channel,
         instance->generic.battery_low,
-        (int16_t)instance->generic.temp,
-        abs(((int16_t)(instance->generic.temp * 10) - (((int16_t)instance->generic.temp) * 10))),
+        (double)instance->generic.temp,
         instance->generic.humidity);
 }
diff --git a/applications/plugins/weather_station/views/weather_station_receiver_info.c b/applications/plugins/weather_station/views/weather_station_receiver_info.c
index 34ec122d1..49b447f10 100644
--- a/applications/plugins/weather_station/views/weather_station_receiver_info.c
+++ b/applications/plugins/weather_station/views/weather_station_receiver_info.c
@@ -75,12 +75,7 @@ void ws_view_receiver_info_draw(Canvas* canvas, WSReceiverInfoModel* model) {
 
     if(model->generic->temp != WS_NO_TEMPERATURE) {
         canvas_draw_icon(canvas, 18, 42, &I_Therm_7x16);
-        snprintf(
-            buffer,
-            sizeof(buffer),
-            "%3.2d.%d C",
-            (int16_t)model->generic->temp,
-            abs(((int16_t)(model->generic->temp * 10) - (((int16_t)model->generic->temp) * 10))));
+        snprintf(buffer, sizeof(buffer), "%3.1f C", (double)model->generic->temp);
         canvas_draw_str_aligned(canvas, 63, 46, AlignRight, AlignTop, buffer);
         canvas_draw_circle(canvas, 55, 45, 1);
     }
diff --git a/applications/services/cli/cli_command_gpio.c b/applications/services/cli/cli_command_gpio.c
index d072ce00c..3e7301cdc 100644
--- a/applications/services/cli/cli_command_gpio.c
+++ b/applications/services/cli/cli_command_gpio.c
@@ -61,15 +61,20 @@ static void gpio_print_pins(void) {
     }
 }
 
-typedef enum { OK, ERR_CMD_SYNTAX, ERR_PIN, ERR_VALUE } GpioParseError;
+typedef enum {
+    GpioParseReturnOk,
+    GpioParseReturnCmdSyntaxError,
+    GpioParseReturnPinError,
+    GpioParseReturnValueError
+} GpioParseReturn;
 
-static GpioParseError gpio_command_parse(FuriString* args, size_t* pin_num, uint8_t* value) {
+static GpioParseReturn gpio_command_parse(FuriString* args, size_t* pin_num, uint8_t* value) {
     FuriString* pin_name;
     pin_name = furi_string_alloc();
 
     size_t ws = furi_string_search_char(args, ' ');
     if(ws == FURI_STRING_FAILURE) {
-        return ERR_CMD_SYNTAX;
+        return GpioParseReturnCmdSyntaxError;
     }
 
     furi_string_set_n(pin_name, args, 0, ws);
@@ -78,7 +83,7 @@ static GpioParseError gpio_command_parse(FuriString* args, size_t* pin_num, uint
 
     if(!pin_name_to_int(pin_name, pin_num)) {
         furi_string_free(pin_name);
-        return ERR_PIN;
+        return GpioParseReturnPinError;
     }
 
     furi_string_free(pin_name);
@@ -88,10 +93,10 @@ static GpioParseError gpio_command_parse(FuriString* args, size_t* pin_num, uint
     } else if(!furi_string_cmp(args, "1")) {
         *value = 1;
     } else {
-        return ERR_VALUE;
+        return GpioParseReturnValueError;
     }
 
-    return OK;
+    return GpioParseReturnOk;
 }
 
 void cli_command_gpio_mode(Cli* cli, FuriString* args, void* context) {
@@ -101,15 +106,15 @@ void cli_command_gpio_mode(Cli* cli, FuriString* args, void* context) {
     size_t num = 0;
     uint8_t value = 255;
 
-    GpioParseError err = gpio_command_parse(args, &num, &value);
+    GpioParseReturn err = gpio_command_parse(args, &num, &value);
 
-    if(ERR_CMD_SYNTAX == err) {
+    if(err == GpioParseReturnCmdSyntaxError) {
         cli_print_usage("gpio mode", "<pin_name> <0|1>", furi_string_get_cstr(args));
         return;
-    } else if(ERR_PIN == err) {
+    } else if(err == GpioParseReturnPinError) {
         gpio_print_pins();
         return;
-    } else if(ERR_VALUE == err) {
+    } else if(err == GpioParseReturnValueError) {
         printf("Value is invalid. Enter 1 for input or 0 for output");
         return;
     }
@@ -161,15 +166,15 @@ void cli_command_gpio_set(Cli* cli, FuriString* args, void* context) {
 
     size_t num = 0;
     uint8_t value = 0;
-    GpioParseError err = gpio_command_parse(args, &num, &value);
+    GpioParseReturn err = gpio_command_parse(args, &num, &value);
 
-    if(ERR_CMD_SYNTAX == err) {
+    if(err == GpioParseReturnCmdSyntaxError) {
         cli_print_usage("gpio set", "<pin_name> <0|1>", furi_string_get_cstr(args));
         return;
-    } else if(ERR_PIN == err) {
+    } else if(err == GpioParseReturnPinError) {
         gpio_print_pins();
         return;
-    } else if(ERR_VALUE == err) {
+    } else if(err == GpioParseReturnValueError) {
         printf("Value is invalid. Enter 1 for high or 0 for low");
         return;
     }
diff --git a/applications/services/cli/cli_commands.c b/applications/services/cli/cli_commands.c
index 239434b7a..64ff8ef71 100644
--- a/applications/services/cli/cli_commands.c
+++ b/applications/services/cli/cli_commands.c
@@ -7,6 +7,7 @@
 #include <time.h>
 #include <notification/notification_messages.h>
 #include <loader/loader.h>
+#include <lib/toolbox/args.h>
 
 // Close to ISO, `date +'%Y-%m-%d %H:%M:%S %u'`
 #define CLI_DATE_FORMAT "%.4d-%.2d-%.2d %.2d:%.2d:%.2d %d"
@@ -192,6 +193,83 @@ void cli_command_log(Cli* cli, FuriString* args, void* context) {
     furi_stream_buffer_free(ring);
 }
 
+void cli_command_sysctl_debug(Cli* cli, FuriString* args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
+    if(!furi_string_cmp(args, "0")) {
+        furi_hal_rtc_reset_flag(FuriHalRtcFlagDebug);
+        loader_update_menu();
+        printf("Debug disabled.");
+    } else if(!furi_string_cmp(args, "1")) {
+        furi_hal_rtc_set_flag(FuriHalRtcFlagDebug);
+        loader_update_menu();
+        printf("Debug enabled.");
+    } else {
+        cli_print_usage("sysctl debug", "<1|0>", furi_string_get_cstr(args));
+    }
+}
+
+void cli_command_sysctl_heap_track(Cli* cli, FuriString* args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
+    if(!furi_string_cmp(args, "none")) {
+        furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackModeNone);
+        printf("Heap tracking disabled");
+    } else if(!furi_string_cmp(args, "main")) {
+        furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackModeMain);
+        printf("Heap tracking enabled for application main thread");
+#if FURI_DEBUG
+    } else if(!furi_string_cmp(args, "tree")) {
+        furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackModeTree);
+        printf("Heap tracking enabled for application main and child threads");
+    } else if(!furi_string_cmp(args, "all")) {
+        furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackModeAll);
+        printf("Heap tracking enabled for all threads");
+#endif
+    } else {
+        cli_print_usage("sysctl heap_track", "<none|main|tree|all>", furi_string_get_cstr(args));
+    }
+}
+
+void cli_command_sysctl_print_usage() {
+    printf("Usage:\r\n");
+    printf("sysctl <cmd> <args>\r\n");
+    printf("Cmd list:\r\n");
+
+    printf("\tdebug <0|1>\t - Enable or disable system debug\r\n");
+#if FURI_DEBUG
+    printf("\theap_track <none|main|tree|all>\t - Set heap allocation tracking mode\r\n");
+#else
+    printf("\theap_track <none|main>\t - Set heap allocation tracking mode\r\n");
+#endif
+}
+
+void cli_command_sysctl(Cli* cli, FuriString* args, void* context) {
+    FuriString* cmd;
+    cmd = furi_string_alloc();
+
+    do {
+        if(!args_read_string_and_trim(args, cmd)) {
+            cli_command_sysctl_print_usage();
+            break;
+        }
+
+        if(furi_string_cmp_str(cmd, "debug") == 0) {
+            cli_command_sysctl_debug(cli, args, context);
+            break;
+        }
+
+        if(furi_string_cmp_str(cmd, "heap_track") == 0) {
+            cli_command_sysctl_heap_track(cli, args, context);
+            break;
+        }
+
+        cli_command_sysctl_print_usage();
+    } while(false);
+
+    furi_string_free(cmd);
+}
+
 void cli_command_vibro(Cli* cli, FuriString* args, void* context) {
     UNUSED(cli);
     UNUSED(context);
@@ -208,22 +286,6 @@ void cli_command_vibro(Cli* cli, FuriString* args, void* context) {
     }
 }
 
-void cli_command_debug(Cli* cli, FuriString* args, void* context) {
-    UNUSED(cli);
-    UNUSED(context);
-    if(!furi_string_cmp(args, "0")) {
-        furi_hal_rtc_reset_flag(FuriHalRtcFlagDebug);
-        loader_update_menu();
-        printf("Debug disabled.");
-    } else if(!furi_string_cmp(args, "1")) {
-        furi_hal_rtc_set_flag(FuriHalRtcFlagDebug);
-        loader_update_menu();
-        printf("Debug enabled.");
-    } else {
-        cli_print_usage("debug", "<1|0>", furi_string_get_cstr(args));
-    }
-}
-
 void cli_command_led(Cli* cli, FuriString* args, void* context) {
     UNUSED(cli);
     UNUSED(context);
@@ -356,7 +418,7 @@ void cli_commands_init(Cli* cli) {
 
     cli_add_command(cli, "date", CliCommandFlagParallelSafe, cli_command_date, NULL);
     cli_add_command(cli, "log", CliCommandFlagParallelSafe, cli_command_log, NULL);
-    cli_add_command(cli, "debug", CliCommandFlagDefault, cli_command_debug, NULL);
+    cli_add_command(cli, "sysctl", CliCommandFlagDefault, cli_command_sysctl, NULL);
     cli_add_command(cli, "ps", CliCommandFlagParallelSafe, cli_command_ps, NULL);
     cli_add_command(cli, "free", CliCommandFlagParallelSafe, cli_command_free, NULL);
     cli_add_command(cli, "free_blocks", CliCommandFlagParallelSafe, cli_command_free_blocks, NULL);
diff --git a/applications/services/cli/cli_vcp.c b/applications/services/cli/cli_vcp.c
index 1e27e185b..94b82950d 100644
--- a/applications/services/cli/cli_vcp.c
+++ b/applications/services/cli/cli_vcp.c
@@ -103,7 +103,7 @@ static int32_t vcp_worker(void* context) {
     while(1) {
         uint32_t flags =
             furi_thread_flags_wait(VCP_THREAD_FLAG_ALL, FuriFlagWaitAny, FuriWaitForever);
-        furi_assert((flags & FuriFlagError) == 0);
+        furi_assert(!(flags & FuriFlagError));
 
         // VCP session opened
         if(flags & VcpEvtConnect) {
@@ -303,7 +303,7 @@ static void vcp_on_cdc_control_line(void* context, uint8_t state) {
 static void vcp_on_cdc_rx(void* context) {
     UNUSED(context);
     uint32_t ret = furi_thread_flags_set(furi_thread_get_id(vcp->thread), VcpEvtRx);
-    furi_check((ret & FuriFlagError) == 0);
+    furi_check(!(ret & FuriFlagError));
 }
 
 static void vcp_on_cdc_tx_complete(void* context) {
diff --git a/applications/services/crypto/crypto_cli.c b/applications/services/crypto/crypto_cli.c
index a64a3ad0b..1b26ba9fb 100644
--- a/applications/services/crypto/crypto_cli.c
+++ b/applications/services/crypto/crypto_cli.c
@@ -167,7 +167,7 @@ void crypto_cli_decrypt(Cli* cli, FuriString* args) {
 void crypto_cli_has_key(Cli* cli, FuriString* args) {
     UNUSED(cli);
     int key_slot = 0;
-    uint8_t iv[16];
+    uint8_t iv[16] = {0};
 
     do {
         if(!args_read_int_and_trim(args, &key_slot) || !(key_slot > 0 && key_slot <= 100)) {
@@ -249,7 +249,7 @@ void crypto_cli_store_key(Cli* cli, FuriString* args) {
         }
 
         if(key_slot > 0) {
-            uint8_t iv[16];
+            uint8_t iv[16] = {0};
             if(key_slot > 1) {
                 if(!furi_hal_crypto_store_load_key(key_slot - 1, iv)) {
                     printf(
diff --git a/applications/services/desktop/scenes/desktop_scene_main.c b/applications/services/desktop/scenes/desktop_scene_main.c
index 654de44d5..4f01ad5be 100644
--- a/applications/services/desktop/scenes/desktop_scene_main.c
+++ b/applications/services/desktop/scenes/desktop_scene_main.c
@@ -45,6 +45,13 @@ static void desktop_switch_to_app(Desktop* desktop, const FlipperApplication* fl
         return;
     }
 
+    FuriHalRtcHeapTrackMode mode = furi_hal_rtc_get_heap_track_mode();
+    if(mode > FuriHalRtcHeapTrackModeNone) {
+        furi_thread_enable_heap_trace(desktop->scene_thread);
+    } else {
+        furi_thread_disable_heap_trace(desktop->scene_thread);
+    }
+
     furi_thread_set_name(desktop->scene_thread, flipper_app->name);
     furi_thread_set_stack_size(desktop->scene_thread, flipper_app->stack_size);
     furi_thread_set_callback(desktop->scene_thread, flipper_app->app);
diff --git a/applications/services/gui/gui.c b/applications/services/gui/gui.c
index 2d06d70c7..9f6ebcd76 100644
--- a/applications/services/gui/gui.c
+++ b/applications/services/gui/gui.c
@@ -436,7 +436,7 @@ void gui_add_framebuffer_callback(Gui* gui, GuiCanvasCommitCallback callback, vo
     const CanvasCallbackPair p = {callback, context};
 
     gui_lock(gui);
-    furi_assert(CanvasCallbackPairArray_count(gui->canvas_callback_pair, p) == 0);
+    furi_assert(!CanvasCallbackPairArray_count(gui->canvas_callback_pair, p));
     CanvasCallbackPairArray_push_back(gui->canvas_callback_pair, p);
     gui_unlock(gui);
 
diff --git a/applications/services/gui/modules/file_browser_worker.c b/applications/services/gui/modules/file_browser_worker.c
index fdaf8273f..b9b2b2d8f 100644
--- a/applications/services/gui/modules/file_browser_worker.c
+++ b/applications/services/gui/modules/file_browser_worker.c
@@ -359,7 +359,7 @@ static int32_t browser_worker(void* context) {
 
 BrowserWorker*
     file_browser_worker_alloc(FuriString* path, const char* filter_ext, bool skip_assets) {
-    BrowserWorker* browser = malloc(sizeof(BrowserWorker));
+    BrowserWorker* browser = malloc(sizeof(BrowserWorker)); //-V773
 
     idx_last_array_init(browser->idx_last);
 
diff --git a/applications/services/gui/modules/widget_elements/widget_element_button.c b/applications/services/gui/modules/widget_elements/widget_element_button.c
index be33b1897..e3267058e 100644
--- a/applications/services/gui/modules/widget_elements/widget_element_button.c
+++ b/applications/services/gui/modules/widget_elements/widget_element_button.c
@@ -60,7 +60,7 @@ WidgetElement* widget_element_button_create(
     ButtonCallback callback,
     void* context) {
     // Allocate and init model
-    GuiButtonModel* model = malloc(sizeof(GuiButtonModel));
+    GuiButtonModel* model = malloc(sizeof(GuiButtonModel)); //-V773
     model->button_type = button_type;
     model->callback = callback;
     model->context = context;
diff --git a/applications/services/gui/view_dispatcher.c b/applications/services/gui/view_dispatcher.c
index 8de452d20..4034cc0b4 100644
--- a/applications/services/gui/view_dispatcher.c
+++ b/applications/services/gui/view_dispatcher.c
@@ -23,7 +23,7 @@ void view_dispatcher_free(ViewDispatcher* view_dispatcher) {
         gui_remove_view_port(view_dispatcher->gui, view_dispatcher->view_port);
     }
     // Crash if not all views were freed
-    furi_assert(ViewDict_size(view_dispatcher->views) == 0);
+    furi_assert(!ViewDict_size(view_dispatcher->views));
 
     ViewDict_clear(view_dispatcher->views);
     // Free ViewPort
@@ -157,7 +157,7 @@ void view_dispatcher_remove_view(ViewDispatcher* view_dispatcher, uint32_t view_
         view_dispatcher->ongoing_input_view = NULL;
     }
     // Remove view
-    ViewDict_erase(view_dispatcher->views, view_id);
+    furi_check(ViewDict_erase(view_dispatcher->views, view_id));
 
     view_set_update_callback(view, NULL);
     view_set_update_callback_context(view, NULL);
diff --git a/applications/services/input/input.c b/applications/services/input/input.c
index d1aef9e8a..1d02df1e5 100644
--- a/applications/services/input/input.c
+++ b/applications/services/input/input.c
@@ -1,5 +1,7 @@
 #include "input_i.h"
 
+// #define INPUT_DEBUG
+
 #define GPIO_Read(input_pin) (furi_hal_gpio_read(input_pin.pin->gpio) ^ (input_pin.pin->inverted))
 
 static Input* input = NULL;
@@ -72,6 +74,10 @@ int32_t input_srv(void* p) {
     input->event_pubsub = furi_pubsub_alloc();
     furi_record_create(RECORD_INPUT_EVENTS, input->event_pubsub);
 
+#if INPUT_DEBUG
+    furi_hal_gpio_init_simple(&gpio_ext_pa4, GpioModeOutputPushPull);
+#endif
+
 #ifdef SRV_CLI
     input->cli = furi_record_open(RECORD_CLI);
     if(input->cli) {
@@ -95,10 +101,16 @@ int32_t input_srv(void* p) {
         bool is_changing = false;
         for(size_t i = 0; i < input_pins_count; i++) {
             bool state = GPIO_Read(input->pin_states[i]);
+            if(state) {
+                if(input->pin_states[i].debounce < INPUT_DEBOUNCE_TICKS)
+                    input->pin_states[i].debounce += 1;
+            } else {
+                if(input->pin_states[i].debounce > 0) input->pin_states[i].debounce -= 1;
+            }
+
             if(input->pin_states[i].debounce > 0 &&
                input->pin_states[i].debounce < INPUT_DEBOUNCE_TICKS) {
                 is_changing = true;
-                input->pin_states[i].debounce += (state ? 1 : -1);
             } else if(input->pin_states[i].state != state) {
                 input->pin_states[i].state = state;
 
@@ -129,8 +141,14 @@ int32_t input_srv(void* p) {
         }
 
         if(is_changing) {
+#if INPUT_DEBUG
+            furi_hal_gpio_write(&gpio_ext_pa4, 1);
+#endif
             furi_delay_tick(1);
         } else {
+#if INPUT_DEBUG
+            furi_hal_gpio_write(&gpio_ext_pa4, 0);
+#endif
             furi_thread_flags_wait(INPUT_THREAD_FLAG_ISR, FuriFlagWaitAny, FuriWaitForever);
         }
     }
diff --git a/applications/services/loader/loader.c b/applications/services/loader/loader.c
index bc456536c..931719723 100644
--- a/applications/services/loader/loader.c
+++ b/applications/services/loader/loader.c
@@ -21,6 +21,13 @@ static bool
 
     FURI_LOG_I(TAG, "Starting: %s", loader_instance->application->name);
 
+    FuriHalRtcHeapTrackMode mode = furi_hal_rtc_get_heap_track_mode();
+    if(mode > FuriHalRtcHeapTrackModeNone) {
+        furi_thread_enable_heap_trace(loader_instance->application_thread);
+    } else {
+        furi_thread_disable_heap_trace(loader_instance->application_thread);
+    }
+
     furi_thread_set_name(loader_instance->application_thread, loader_instance->application->name);
     furi_thread_set_stack_size(
         loader_instance->application_thread, loader_instance->application->stack_size);
@@ -269,22 +276,18 @@ static void loader_thread_state_callback(FuriThreadState thread_state, void* con
         event.type = LoaderEventTypeApplicationStarted;
         furi_pubsub_publish(loader_instance->pubsub, &event);
 
-        if(!loader_instance->application->flags & FlipperApplicationFlagInsomniaSafe) {
+        if(!(loader_instance->application->flags & FlipperApplicationFlagInsomniaSafe)) {
             furi_hal_power_insomnia_enter();
         }
     } else if(thread_state == FuriThreadStateStopped) {
-        FURI_LOG_I(
-            TAG,
-            "Application thread stopped. Free heap: %d. Thread allocation balance: %d.",
-            memmgr_get_free_heap(),
-            furi_thread_get_heap_size(instance->application_thread));
+        FURI_LOG_I(TAG, "Application stopped. Free heap: %d", memmgr_get_free_heap());
 
         if(loader_instance->application_arguments) {
             free(loader_instance->application_arguments);
             loader_instance->application_arguments = NULL;
         }
 
-        if(!loader_instance->application->flags & FlipperApplicationFlagInsomniaSafe) {
+        if(!(loader_instance->application->flags & FlipperApplicationFlagInsomniaSafe)) {
             furi_hal_power_insomnia_exit();
         }
         loader_unlock(instance);
@@ -310,7 +313,7 @@ static Loader* loader_alloc() {
     Loader* instance = malloc(sizeof(Loader));
 
     instance->application_thread = furi_thread_alloc();
-    furi_thread_enable_heap_trace(instance->application_thread);
+
     furi_thread_set_state_context(instance->application_thread, instance);
     furi_thread_set_state_callback(instance->application_thread, loader_thread_state_callback);
 
diff --git a/applications/services/rpc/rpc.c b/applications/services/rpc/rpc.c
index 73eaadfb1..f1e0cbd66 100644
--- a/applications/services/rpc/rpc.c
+++ b/applications/services/rpc/rpc.c
@@ -372,7 +372,7 @@ RpcSession* rpc_session_open(Rpc* rpc) {
 
     session->thread = furi_thread_alloc();
     furi_thread_set_name(session->thread, "RpcSessionWorker");
-    furi_thread_set_stack_size(session->thread, 2048);
+    furi_thread_set_stack_size(session->thread, 3072);
     furi_thread_set_context(session->thread, session);
     furi_thread_set_callback(session->thread, rpc_session_worker);
 
diff --git a/applications/services/storage/storage_cli.c b/applications/services/storage/storage_cli.c
index 0efcb5e2c..c83f16499 100644
--- a/applications/services/storage/storage_cli.c
+++ b/applications/services/storage/storage_cli.c
@@ -275,7 +275,7 @@ static void storage_cli_read_chunks(Cli* cli, FuriString* path, FuriString* args
     uint32_t buffer_size;
     int parsed_count = sscanf(furi_string_get_cstr(args), "%lu", &buffer_size);
 
-    if(parsed_count == EOF || parsed_count != 1) {
+    if(parsed_count != 1) {
         storage_cli_print_usage();
     } else if(storage_file_open(file, furi_string_get_cstr(path), FSAM_READ, FSOM_OPEN_EXISTING)) {
         uint64_t file_size = storage_file_size(file);
@@ -315,7 +315,7 @@ static void storage_cli_write_chunk(Cli* cli, FuriString* path, FuriString* args
     uint32_t buffer_size;
     int parsed_count = sscanf(furi_string_get_cstr(args), "%lu", &buffer_size);
 
-    if(parsed_count == EOF || parsed_count != 1) {
+    if(parsed_count != 1) {
         storage_cli_print_usage();
     } else {
         if(storage_file_open(file, furi_string_get_cstr(path), FSAM_WRITE, FSOM_OPEN_APPEND)) {
diff --git a/applications/services/storage/storage_external_api.c b/applications/services/storage/storage_external_api.c
index 6854ef7f3..2c3a7bfc9 100644
--- a/applications/services/storage/storage_external_api.c
+++ b/applications/services/storage/storage_external_api.c
@@ -545,8 +545,8 @@ static FS_Error
 
 FS_Error storage_common_merge(Storage* storage, const char* old_path, const char* new_path) {
     FS_Error error;
-    const char* new_path_tmp;
-    FuriString* new_path_next;
+    const char* new_path_tmp = NULL;
+    FuriString* new_path_next = NULL;
     new_path_next = furi_string_alloc();
 
     FileInfo fileinfo;
diff --git a/applications/settings/system/system_settings.c b/applications/settings/system/system_settings.c
index 7661413d7..dfce11a22 100644
--- a/applications/settings/system/system_settings.c
+++ b/applications/settings/system/system_settings.c
@@ -45,6 +45,31 @@ static void debug_changed(VariableItem* item) {
     loader_update_menu();
 }
 
+const char* const heap_trace_mode_text[] = {
+    "None",
+    "Main",
+#if FURI_DEBUG
+    "Tree",
+    "All",
+#endif
+};
+
+const uint32_t heap_trace_mode_value[] = {
+    FuriHalRtcHeapTrackModeNone,
+    FuriHalRtcHeapTrackModeMain,
+#if FURI_DEBUG
+    FuriHalRtcHeapTrackModeTree,
+    FuriHalRtcHeapTrackModeAll,
+#endif
+};
+
+static void heap_trace_mode_changed(VariableItem* item) {
+    // SystemSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    variable_item_set_current_value_text(item, heap_trace_mode_text[index]);
+    furi_hal_rtc_set_heap_track_mode(heap_trace_mode_value[index]);
+}
+
 static uint32_t system_settings_exit(void* context) {
     UNUSED(context);
     return VIEW_NONE;
@@ -79,6 +104,18 @@ SystemSettings* system_settings_alloc() {
     variable_item_set_current_value_index(item, value_index);
     variable_item_set_current_value_text(item, debug_text[value_index]);
 
+    item = variable_item_list_add(
+        app->var_item_list,
+        "Heap Trace",
+        COUNT_OF(heap_trace_mode_text),
+        heap_trace_mode_changed,
+        app);
+    value_index = value_index_uint32(
+        furi_hal_rtc_get_heap_track_mode(), heap_trace_mode_value, COUNT_OF(heap_trace_mode_text));
+    furi_hal_rtc_set_heap_track_mode(heap_trace_mode_value[value_index]);
+    variable_item_set_current_value_index(item, value_index);
+    variable_item_set_current_value_text(item, heap_trace_mode_text[value_index]);
+
     view_set_previous_callback(
         variable_item_list_get_view(app->var_item_list), system_settings_exit);
     view_dispatcher_add_view(
diff --git a/assets/unit_tests/infrared/test_kaseikyo.irtest b/assets/unit_tests/infrared/test_kaseikyo.irtest
new file mode 100644
index 000000000..d0142fecd
--- /dev/null
+++ b/assets/unit_tests/infrared/test_kaseikyo.irtest
@@ -0,0 +1,105 @@
+Filetype: IR tests file
+Version: 1
+#
+name: decoder_input1
+type: raw
+data: 1000000 3363 1685 407 436 411 432 415 1240 434 410 437 1245 439 404 433 1249 435 408 439 431 406 1249 435 435 412 405 442 1241 433 1249 435 408 439 405 442 428 409 434 413 430 407 411 436 433 414 429 408 1248 436 407 440 1243 441 428 409 434 413 431 406 1249 435 1248 436 406 441 1242 442 1240 434 409 438 431 416 428 409 408 439 430 407 411 436 407 440 429 408 436 411 432 415 402 435 1247 437 1245 439 1243 441 1238 436
+#
+name: decoder_expected1
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 41 54 32 00
+command: 1B 00 00 00
+repeat: false
+#
+name: decoder_input2
+type: raw
+data: 1000000 3365 1683 409 434 413 431 406 1276 408 435 412 1270 414 429 408 1248 436 434 413 430 407 1275 409 434 413 431 406 1276 408 1248 436 433 414 430 407 437 410 433 414 429 408 436 411 432 415 428 409 1246 438 432 415 1267 407 437 410 433 414 429 408 436 411 432 415 1266 408 1250 434 1248 436 432 415 429 408 435 412 432 415 428 409 434 413 430 407 437 410 433 414 429 408 436 411 432 415 428 409 435 412 1240 434
+#
+name: decoder_expected2
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 41 54 32 00
+command: 1C 00 00 00
+repeat: false
+#
+name: decoder_input3
+type: raw
+data: 1000000 3361 1661 442 427 410 434 413 1243 441 428 409 1247 437 432 415 1241 433 410 437 407 440 1242 432 437 410 407 440 1242 442 1241 433 436 411 407 440 430 407 436 411 406 441 402 435 435 412 431 416 1240 434 410 437 1245 439 404 433 411 436 407 440 403 434 436 411 432 415 429 408 1249 435 1247 437 1245 439 430 407 1250 434 434 413 404 433 438 409 434 413 1243 441 1241 433 410 437 1245 439 430 407 1250 434 432 415
+#
+name: decoder_expected3
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 41 54 32 00
+command: 70 01 00 00
+repeat: false
+#
+name: decoder_input4
+type: raw
+data: 1000000 3365 1656 436 406 441 402 435 1248 436 406 441 1242 432 410 437 1246 438 404 433 410 437 1246 438 404 433 437 410 1245 491 1190 442 401 436 435 412 431 416 427 410 433 414 429 408 435 412 431 416 1240 434 435 412 1244 440 1241 433 436 411 433 414 402 435 409 438 405 442 402 435 1247 437 1244 440 1241 433 437 410 1245 439 430 407 410 437 406 441 402 435 409 438 1243 441 402 435 1247 437 406 441 1240 434 433 414
+#
+name: decoder_expected4
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 43 54 32 00
+command: 70 01 00 00
+repeat: false
+#
+name: decoder_input5
+type: raw
+data: 1000000 3357 1665 438 431 416 428 409 1247 437 432 415 1241 433 436 411 1245 439 430 407 436 411 1245 439 430 407 437 410 1246 438 1243 441 428 409 436 411 432 415 428 409 435 412 431 416 427 410 434 413 1243 441 427 410 1247 437 1245 439 430 407 437 410 1246 438 1244 440 429 408 1250 434 1248 488 355 440 429 408 436 411 432 415 428 408 435 412 431 416 428 409 1247 437 432 415 428 409 1248 436 1246 490 1191 441 1240 434
+#
+name: decoder_expected5
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 43 54 32 00
+command: 1B 00 00 00
+repeat: false
+#
+name: decoder_input6
+type: raw
+data: 1000000 3358 1664 439 430 407 437 410 1245 439 430 407 1250 434 434 413 1243 441 428 409 435 412 1244 440 428 409 435 412 1244 440 1242 432 437 410 434 413 430 407 436 411 432 415 428 409 435 412 431 416 1240 434 435 412 1244 440 1242 442 427 410 434 413 1243 441 427 409 1247 437 433 414 429 408 436 411 432 415 428 409 435 412 431 416 427 410 434 413 1243 441 1240 486 357 438 432 415 1240 434 436 411 432 415 425 412
+#
+name: decoder_expected6
+type: parsed_array
+count: 1
+#
+protocol: Kaseikyo
+address: 43 54 32 00
+command: 05 00 00 00
+repeat: false
+#
+name: encoder_decoder_input1
+type: parsed_array
+count: 4
+#
+protocol: Kaseikyo
+address: 41 54 32 00
+command: 1B 00 00 00
+repeat: false
+#
+protocol: Kaseikyo
+address: 41 54 32 00
+command: 70 01 00 00
+repeat: false
+#
+protocol: Kaseikyo
+address: 43 54 32 00
+command: 05 00 00 00
+repeat: false
+#
+protocol: Kaseikyo
+address: 43 54 32 00
+command: 1B 00 00 00
+repeat: false
+#
diff --git a/debug/flipperapps.py b/debug/flipperapps.py
index 8e1aa2daf..e815e40b1 100644
--- a/debug/flipperapps.py
+++ b/debug/flipperapps.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass
-from typing import Tuple, Dict
+from typing import Optional, Tuple, Dict, ClassVar
 import struct
 import posixpath
 import os
@@ -22,14 +22,18 @@ class AppState:
     debug_link_elf: str = ""
     debug_link_crc: int = 0
 
+    DEBUG_ELF_ROOT: ClassVar[Optional[str]] = None
+
     def __post_init__(self):
         if self.other_sections is None:
             self.other_sections = {}
 
-    def get_original_elf_path(self, elf_path="build/latest/.extapps") -> str:
+    def get_original_elf_path(self) -> str:
+        if self.DEBUG_ELF_ROOT is None:
+            raise ValueError("DEBUG_ELF_ROOT not set; call fap-set-debug-elf-root")
         return (
-            posixpath.join(elf_path, self.debug_link_elf)
-            if elf_path
+            posixpath.join(self.DEBUG_ELF_ROOT, self.debug_link_elf)
+            if self.DEBUG_ELF_ROOT
             else self.debug_link_elf
         )
 
@@ -84,7 +88,9 @@ class AppState:
         if debug_link_size := int(app_state["debug_link_info"]["debug_link_size"]):
             debug_link_data = (
                 gdb.selected_inferior()
-                .read_memory(int(app_state["debug_link_info"]["debug_link"]), debug_link_size)
+                .read_memory(
+                    int(app_state["debug_link_info"]["debug_link"]), debug_link_size
+                )
                 .tobytes()
             )
             state.debug_link_elf, state.debug_link_crc = AppState.parse_debug_link_data(
@@ -103,6 +109,29 @@ class AppState:
         return state
 
 
+class SetFapDebugElfRoot(gdb.Command):
+    """Set path to original ELF files for debug info"""
+
+    def __init__(self):
+        super().__init__(
+            "fap-set-debug-elf-root", gdb.COMMAND_FILES, gdb.COMPLETE_FILENAME
+        )
+        self.dont_repeat()
+
+    def invoke(self, arg, from_tty):
+        AppState.DEBUG_ELF_ROOT = arg
+        try:
+            global helper
+            print(f"Set '{arg}' as debug info lookup path for Flipper external apps")
+            helper.attach_fw()
+            gdb.events.stop.connect(helper.handle_stop)
+        except gdb.error as e:
+            print(f"Support for Flipper external apps debug is not available: {e}")
+
+
+SetFapDebugElfRoot()
+
+
 class FlipperAppDebugHelper:
     def __init__(self):
         self.app_ptr = None
@@ -149,9 +178,4 @@ class FlipperAppDebugHelper:
 
 
 helper = FlipperAppDebugHelper()
-try:
-    helper.attach_fw()
-    print("Support for Flipper external apps debug is enabled")
-    gdb.events.stop.connect(helper.handle_stop)
-except gdb.error as e:
-    print(f"Support for Flipper external apps debug is not available: {e}")
+print("Support for Flipper external apps debug is loaded")
diff --git a/documentation/.gitignore b/documentation/.gitignore
new file mode 100644
index 000000000..c18ff03bb
--- /dev/null
+++ b/documentation/.gitignore
@@ -0,0 +1,2 @@
+/html
+/latex
\ No newline at end of file
diff --git a/documentation/AppManifests.md b/documentation/AppManifests.md
index f4814ee5d..d70a12f9c 100644
--- a/documentation/AppManifests.md
+++ b/documentation/AppManifests.md
@@ -40,6 +40,7 @@ Only 2 parameters are mandatory: ***appid*** and ***apptype***, others are optio
 * **icon**: Animated icon name from built-in assets to be used when building app as a part of firmware.
 * **order**: Order of an application within its group when sorting entries in it. The lower the order is, the closer to the start of the list the item is placed. *Used for ordering startup hooks and menu entries.* 
 * **sdk_headers**: List of C header files from this app's code to include in API definitions for external applications.
+* **targets**: list of strings, target names, which this application is compatible with. If not specified, application is built for all targets. Default value is `["all"]`.
 
 
 #### Parameters for external applications
diff --git a/documentation/Doxyfile b/documentation/Doxyfile
index 6d6bb8aa8..1824e5a52 100644
--- a/documentation/Doxyfile
+++ b/documentation/Doxyfile
@@ -872,12 +872,9 @@ WARN_LOGFILE           =
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  = applications \
-                        core \
-                        lib/infrared \
-                        lib/subghz \
-                        lib/toolbox \
-                        lib/onewire \
-                        firmware/targets/furi_hal_include
+                        lib \
+                        firmware \
+                        furi
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -930,7 +927,18 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                =
+EXCLUDE = \
+    lib/mlib \
+    lib/STM32CubeWB \
+    lib/littlefs \
+    lib/nanopb \
+    assets/protobuf \
+    lib/libusb_stm32 \
+    lib/FreeRTOS-Kernel \
+    lib/microtar \
+    lib/mbedtls \
+    lib/cxxheaderparser \
+    applications/plugins/dap_link/lib/free-dap
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded
diff --git a/documentation/KeyCombo.md b/documentation/KeyCombo.md
index 359fd5b9b..e6f55dc52 100644
--- a/documentation/KeyCombo.md
+++ b/documentation/KeyCombo.md
@@ -1,7 +1,7 @@
 # Key Combos
 
-There are times when your flipper feels blue and don't respond to your commands.
-In that case you may find this guide useful.
+There are times when your flipper feels blue and doesn't respond to your commands.
+In that case, you may find this guide useful.
 
 
 ## Basic Combos
@@ -9,7 +9,7 @@ In that case you may find this guide useful.
 
 ### Hardware Reset
 
-- Press `LEFT` and `BACK` and hold for couple seconds
+- Press `LEFT` and `BACK` and hold for a couple of seconds
 - Release `LEFT` and `BACK`
 
 This combo performs hardware reset by pulling MCU reset line down.
@@ -29,7 +29,7 @@ There is 1 case when it's not working:
 - If you have not disconnected USB, then disconnect USB and repeat previous step
 - Release `BACK` key
 
-This combo performs reset by switching SYS power line off and then on.
+This combo performs a reset by switching SYS power line off and then on.
 Main components involved: Keys -> DD6(bq25896, charger)
 
 There is 1 case when it's not working:
@@ -60,13 +60,13 @@ There is 1 case when it's not working:
 
 ### Hardware Reset + Software DFU
 
-- Press `LEFT` and `BACK` and hold for couple seconds
+- Press `LEFT` and `BACK` and hold for a couple of seconds
 - Release `BACK`
 - Device will enter DFU with indication (Blue LED + DFU Screen)
 - Release `LEFT`
 
 This combo performs hardware reset by pulling MCU reset line down.
-Then `LEFT` key indicates to boot-loader that DFU mode requested.
+Then `LEFT` key indicates to boot-loader that DFU mode is requested.
 
 There are 2 cases when it's not working:
 
@@ -76,7 +76,7 @@ There are 2 cases when it's not working:
 
 ### Hardware Reset + Hardware DFU
 
-- Press `LEFT` and `BACK` and `OK` and hold for couple seconds
+- Press `LEFT` and `BACK` and `OK` and hold for a couple of seconds
 - Release `BACK` and `LEFT`
 - Device will enter DFU without indication
 
@@ -127,8 +127,8 @@ There are 2 cases when it's not working:
 
 If none of the described methods were useful:
 
-- Ensure battery charged
-- Disconnect battery and connect again (Requires disassembly)
-- Try to Flash device with ST-Link or other programmer that support SWD
+- Ensure the battery charged
+- Disconnect the battery and connect again (Requires disassembly)
+- Try to Flash device with ST-Link or other programmer that supports SWD
 
-If you still here and your device is not working: it's not software issue.
+If you still here and your device is not working: it's not a software issue.
diff --git a/documentation/UnitTests.md b/documentation/UnitTests.md
new file mode 100644
index 000000000..3f56a9a90
--- /dev/null
+++ b/documentation/UnitTests.md
@@ -0,0 +1,49 @@
+# Unit tests
+## Intro
+Unit tests are special pieces of code that apply known inputs to the feature code and check the results to see if they were correct. 
+They are crucial for writing robust, bug-free code.
+
+Flipper Zero firmware includes a separate application called [unit_tests](/applications/debug/unit_tests).
+It is run directly on the Flipper Zero in order to employ its hardware features and to rule out any platform-related differences.
+
+When contributing code to the Flipper Zero firmware, it is highly desirable to supply unit tests along with the proposed features. 
+Running existing unit tests is useful to ensure that the new code doesn't introduce any regressions.
+
+## Running unit tests
+In order to run the unit tests, follow these steps:
+1. Compile the firmware with the tests enabled: `./fbt FIRMWARE_APP_SET=unit_tests`.
+2. Flash the firmware using your preferred method.
+3. Copy the [assets/unit_tests](assets/unit_tests) folder to the root your Flipper Zero's SD card.
+4. Launch the CLI session and run the `unit_tests` command.
+
+**NOTE:** To run a particular test (and skip all others), specify its name as the command argument. 
+See [test_index.c](applications/debug/unit_tests/test_index.c) for the complete list of test names.
+
+## Adding unit tests
+### General
+#### Entry point
+The common entry point for all tests it the [unit_tests](applications/debug/unit_tests) application. Test-specific code is placed into an arbitrarily named subdirectory and is then called from the [test_index.c](applications/debug/unit_tests/test_index.c) source file.
+#### Test assets
+Some unit tests require external data in order to function. These files (commonly called assets) reside in the [assets/unit_tests](/assets/unit_tests) directory in their respective subdirectories. Asset files can be of any type (plain text, FlipperFormat(FFF), binary etc).
+### Application-specific
+#### Infrared
+Each infrared protocol has a corresponding set of unit tests, so it makes sense to implement one when adding support for a new protocol.
+In order to add unit tests for your protocol, follow these steps:
+1. Create a file named `test_<your_protocol_name>.irtest` in the [assets](assets/unit_tests/infrared) directory.
+2. Fill it with the test data (more on it below).
+3. Add the test code to [infrared_test.c](applications/debug/unit_tests/infrared/infrared_test.c).
+4. Update the [assets](assets/unit_tests/infrared) on your Flipper Zero and run the tests to see if they pass.
+
+##### Test data format
+Each unit test has 3 sections: 
+1. `decoder` - takes in raw signal and outputs decoded messages.
+2. `encoder` - takes in decoded messages and outputs raw signal.
+3. `encoder_decoder` - takes in decoded messages, turns them into raw signal and then decodes again. 
+
+Infrared test asset files have an `.irtest` extension and are regular `.ir` files with a few additions.
+Decoder input data has signal names `decoder_input_N`, where N is a test sequence number. Expected data goes under the name `decoder_expected_N`. When testing the encoder these two are switched.
+
+Decoded data is represented in arrays (since a single raw signal may decode to several messages). If there is only one signal, then it has to be an array of size 1. Use the existing files as syntax examples.
+
+##### Getting raw signals
+Recording raw IR signals is possible using Flipper Zero. Launch the CLI session, run `ir rx raw`, then point the remote towards Flipper's receiver and send the signals. The raw signal data will be printed to the console in a convenient format.
diff --git a/fbt_options.py b/fbt_options.py
index 6ef9759e3..a00f7c1b6 100644
--- a/fbt_options.py
+++ b/fbt_options.py
@@ -49,12 +49,12 @@ OPENOCD_OPTS = [
     "-c",
     "transport select hla_swd",
     "-f",
-    "debug/stm32wbx.cfg",
+    "${FBT_DEBUG_DIR}/stm32wbx.cfg",
     "-c",
     "stm32wbx.cpu configure -rtos auto",
 ]
 
-SVD_FILE = "debug/STM32WB55_CM4.svd"
+SVD_FILE = "${FBT_DEBUG_DIR}/STM32WB55_CM4.svd"
 
 # Look for blackmagic probe on serial ports and local network
 BLACKMAGIC = "auto"
@@ -81,6 +81,7 @@ FIRMWARE_APPS = {
         "basic_services",
         "updater_app",
         "unit_tests",
+        "nfc",
     ],
 }
 
diff --git a/firmware.scons b/firmware.scons
index a0c1ab339..d674bf160 100644
--- a/firmware.scons
+++ b/firmware.scons
@@ -20,10 +20,9 @@ env = ENV.Clone(
     BUILD_DIR=fw_build_meta["build_dir"],
     IS_BASE_FIRMWARE=fw_build_meta["type"] == "firmware",
     FW_FLAVOR=fw_build_meta["flavor"],
-    PLUGIN_ELF_DIR="${BUILD_DIR}",
-    LIB_DIST_DIR="${BUILD_DIR}/lib",
+    LIB_DIST_DIR=fw_build_meta["build_dir"].Dir("lib"),
     LINT_SOURCES=[
-        "applications",
+        Dir("applications"),
     ],
     LIBPATH=[
         "${LIB_DIST_DIR}",
@@ -41,11 +40,11 @@ env = ENV.Clone(
     FW_LIB_OPTS={
         "Default": {
             "CCFLAGS": [
-                "-Os",
+                "-Og" if ENV["LIB_DEBUG"] else "-Os",
             ],
             "CPPDEFINES": [
                 "NDEBUG",
-                "FURI_NDEBUG",
+                "FURI_DEBUG" if ENV["LIB_DEBUG"] else "FURI_NDEBUG",
             ],
             # You can add other entries named after libraries
             # If they are present, they have precedence over Default
@@ -142,12 +141,14 @@ for app_dir, _ in env["APPDIRS"]:
 
 fwenv.PrepareApplicationsBuild()
 
-# Build external apps
+# Build external apps + configure SDK
 if env["IS_BASE_FIRMWARE"]:
-    extapps = fwenv["FW_EXTAPPS"] = SConscript(
-        "site_scons/extapps.scons", exports={"ENV": fwenv}
+    fwenv.SetDefault(FBT_FAP_DEBUG_ELF_ROOT="${BUILD_DIR}/.extapps")
+    fwenv["FW_EXTAPPS"] = SConscript(
+        "site_scons/extapps.scons",
+        exports={"ENV": fwenv},
     )
-    fw_artifacts.append(extapps["sdk_tree"])
+    fw_artifacts.append(fwenv["FW_EXTAPPS"].sdk_tree)
 
 
 # Add preprocessor definitions for current set of apps
@@ -263,7 +264,10 @@ fw_artifacts.extend(
 
 fwcdb = fwenv.CompilationDatabase()
 # without filtering, both updater & firmware commands would be generated in same file
-fwenv.Replace(COMPILATIONDB_PATH_FILTER=fwenv.subst("*${FW_FLAVOR}*"))
+fwenv.Replace(
+    COMPILATIONDB_PATH_FILTER=fwenv.subst("*${FW_FLAVOR}*"),
+    COMPILATIONDB_SRCPATH_FILTER="*.c*",
+)
 AlwaysBuild(fwcdb)
 Precious(fwcdb)
 NoClean(fwcdb)
diff --git a/firmware/SConscript b/firmware/SConscript
index 19dde2e4c..a16f14e65 100644
--- a/firmware/SConscript
+++ b/firmware/SConscript
@@ -1,7 +1,7 @@
 Import("env")
 
 env.Append(
-    LINT_SOURCES=["firmware"],
+    LINT_SOURCES=[Dir(".")],
     SDK_HEADERS=[
         *env.GlobRecursive("*.h", "targets/furi_hal_include", "*_i.h"),
         *env.GlobRecursive("*.h", "targets/f${TARGET_HW}/furi_hal", "*_i.h"),
diff --git a/firmware/targets/f7/api_symbols.csv b/firmware/targets/f7/api_symbols.csv
index 0c10258f7..1ad5efa72 100644
--- a/firmware/targets/f7/api_symbols.csv
+++ b/firmware/targets/f7/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,7.3,,
+Version,+,7.5,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -1260,6 +1260,7 @@ Function,+,furi_hal_rtc_deinit_early,void,
 Function,+,furi_hal_rtc_get_boot_mode,FuriHalRtcBootMode,
 Function,+,furi_hal_rtc_get_datetime,void,FuriHalRtcDateTime*
 Function,+,furi_hal_rtc_get_fault_data,uint32_t,
+Function,+,furi_hal_rtc_get_heap_track_mode,FuriHalRtcHeapTrackMode,
 Function,+,furi_hal_rtc_get_log_level,uint8_t,
 Function,+,furi_hal_rtc_get_pin_fails,uint32_t,
 Function,+,furi_hal_rtc_get_register,uint32_t,FuriHalRtcRegister
@@ -1272,6 +1273,7 @@ Function,+,furi_hal_rtc_set_boot_mode,void,FuriHalRtcBootMode
 Function,+,furi_hal_rtc_set_datetime,void,FuriHalRtcDateTime*
 Function,+,furi_hal_rtc_set_fault_data,void,uint32_t
 Function,+,furi_hal_rtc_set_flag,void,FuriHalRtcFlag
+Function,+,furi_hal_rtc_set_heap_track_mode,void,FuriHalRtcHeapTrackMode
 Function,+,furi_hal_rtc_set_log_level,void,uint8_t
 Function,+,furi_hal_rtc_set_pin_fails,void,uint32_t
 Function,+,furi_hal_rtc_set_register,void,"FuriHalRtcRegister, uint32_t"
@@ -1844,6 +1846,7 @@ Function,-,mf_classic_get_read_sectors_and_keys,void,"MfClassicData*, uint8_t*,
 Function,-,mf_classic_get_sector_by_block,uint8_t,uint8_t
 Function,-,mf_classic_get_sector_trailer_block_num_by_sector,uint8_t,uint8_t
 Function,-,mf_classic_get_sector_trailer_by_sector,MfClassicSectorTrailer*,"MfClassicData*, uint8_t"
+Function,-,mf_classic_get_total_block_num,uint16_t,MfClassicType
 Function,-,mf_classic_get_total_sectors_num,uint8_t,MfClassicType
 Function,-,mf_classic_get_type_str,const char*,MfClassicType
 Function,-,mf_classic_is_allowed_access_data_block,_Bool,"MfClassicData*, uint8_t, MfClassicKey, MfClassicAction"
diff --git a/firmware/targets/f7/ble_glue/gap.c b/firmware/targets/f7/ble_glue/gap.c
index aa8cd2c90..cf27df3a3 100644
--- a/firmware/targets/f7/ble_glue/gap.c
+++ b/firmware/targets/f7/ble_glue/gap.c
@@ -179,7 +179,7 @@ SVCCTL_UserEvtFlowStatus_t SVCCTL_App_Notification(void* pckt) {
 
         case EVT_BLUE_GAP_PASS_KEY_REQUEST: {
             // Generate random PIN code
-            uint32_t pin = rand() % 999999;
+            uint32_t pin = rand() % 999999; //-V1064
             aci_gap_pass_key_resp(gap->service.connection_handle, pin);
             if(furi_hal_rtc_is_flag_set(FuriHalRtcFlagLock)) {
                 FURI_LOG_I(TAG, "Pass key request event. Pin: ******");
@@ -478,7 +478,6 @@ bool gap_init(GapConfig* config, GapEventCallback on_event_cb, void* context) {
 
     gap = malloc(sizeof(Gap));
     gap->config = config;
-    srand(DWT->CYCCNT);
     // Create advertising timer
     gap->advertise_timer = furi_timer_alloc(gap_advetise_timer_callback, FuriTimerTypeOnce, NULL);
     // Initialization of GATT & GAP layer
diff --git a/firmware/targets/f7/furi_hal/furi_hal_crypto.c b/firmware/targets/f7/furi_hal/furi_hal_crypto.c
index dbd8c58c2..e0ed3ab9b 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_crypto.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_crypto.c
@@ -91,7 +91,7 @@ bool furi_hal_crypto_verify_key(uint8_t key_slot) {
     uint8_t keys_nb = 0;
     uint8_t valid_keys_nb = 0;
     uint8_t last_valid_slot = ENCLAVE_FACTORY_KEY_SLOTS;
-    uint8_t empty_iv[16];
+    uint8_t empty_iv[16] = {0};
     furi_hal_crypto_verify_enclave(&keys_nb, &valid_keys_nb);
     if(key_slot <= ENCLAVE_FACTORY_KEY_SLOTS) { // It's a factory key
         if(key_slot > keys_nb) return false;
diff --git a/firmware/targets/f7/furi_hal/furi_hal_resources.h b/firmware/targets/f7/furi_hal/furi_hal_resources.h
index 8d53ec48a..64e5e19f9 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_resources.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_resources.h
@@ -10,7 +10,7 @@ extern "C" {
 #endif
 
 /* Input Related Constants */
-#define INPUT_DEBOUNCE_TICKS 30
+#define INPUT_DEBOUNCE_TICKS 4
 
 /* Input Keys */
 typedef enum {
diff --git a/firmware/targets/f7/furi_hal/furi_hal_rtc.c b/firmware/targets/f7/furi_hal/furi_hal_rtc.c
index 14ece9466..c38cbfec5 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_rtc.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_rtc.c
@@ -30,7 +30,8 @@ typedef struct {
     uint8_t log_reserved : 4;
     uint8_t flags;
     uint8_t boot_mode : 4;
-    uint16_t reserved : 12;
+    uint8_t heap_track_mode : 2;
+    uint16_t reserved : 10;
 } DeveloperReg;
 
 _Static_assert(sizeof(DeveloperReg) == 4, "DeveloperReg size mismatch");
@@ -224,6 +225,19 @@ FuriHalRtcBootMode furi_hal_rtc_get_boot_mode() {
     return (FuriHalRtcBootMode)data->boot_mode;
 }
 
+void furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackMode mode) {
+    uint32_t data_reg = furi_hal_rtc_get_register(FuriHalRtcRegisterSystem);
+    DeveloperReg* data = (DeveloperReg*)&data_reg;
+    data->heap_track_mode = mode;
+    furi_hal_rtc_set_register(FuriHalRtcRegisterSystem, data_reg);
+}
+
+FuriHalRtcHeapTrackMode furi_hal_rtc_get_heap_track_mode() {
+    uint32_t data_reg = furi_hal_rtc_get_register(FuriHalRtcRegisterSystem);
+    DeveloperReg* data = (DeveloperReg*)&data_reg;
+    return (FuriHalRtcHeapTrackMode)data->heap_track_mode;
+}
+
 void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime) {
     furi_assert(datetime);
 
diff --git a/firmware/targets/furi_hal_include/furi_hal_rtc.h b/firmware/targets/furi_hal_include/furi_hal_rtc.h
index 361225fb2..5ce122271 100644
--- a/firmware/targets/furi_hal_include/furi_hal_rtc.h
+++ b/firmware/targets/furi_hal_include/furi_hal_rtc.h
@@ -39,6 +39,13 @@ typedef enum {
     FuriHalRtcBootModePostUpdate, /**< Boot to Update, post update */
 } FuriHalRtcBootMode;
 
+typedef enum {
+    FuriHalRtcHeapTrackModeNone = 0, /**< Disable allocation tracking */
+    FuriHalRtcHeapTrackModeMain, /**< Enable allocation tracking for main application thread */
+    FuriHalRtcHeapTrackModeTree, /**< Enable allocation tracking for main and children application threads */
+    FuriHalRtcHeapTrackModeAll, /**< Enable allocation tracking for all threads */
+} FuriHalRtcHeapTrackMode;
+
 typedef enum {
     FuriHalRtcRegisterHeader, /**< RTC structure header */
     FuriHalRtcRegisterSystem, /**< Various system bits */
@@ -79,6 +86,10 @@ void furi_hal_rtc_set_boot_mode(FuriHalRtcBootMode mode);
 
 FuriHalRtcBootMode furi_hal_rtc_get_boot_mode();
 
+void furi_hal_rtc_set_heap_track_mode(FuriHalRtcHeapTrackMode mode);
+
+FuriHalRtcHeapTrackMode furi_hal_rtc_get_heap_track_mode();
+
 void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime);
 
 void furi_hal_rtc_get_datetime(FuriHalRtcDateTime* datetime);
diff --git a/furi/SConscript b/furi/SConscript
index f95ef13f9..8f8caeb87 100644
--- a/furi/SConscript
+++ b/furi/SConscript
@@ -2,8 +2,7 @@ Import("env")
 
 env.Append(
     LINT_SOURCES=[
-        "furi",
-        "furi/core",
+        Dir("."),
     ]
 )
 
diff --git a/furi/core/check.h b/furi/core/check.h
index 78efc1451..192c5260e 100644
--- a/furi/core/check.h
+++ b/furi/core/check.h
@@ -46,7 +46,7 @@ FURI_NORETURN void __furi_halt();
 /** Check condition and crash if check failed */
 #define furi_check(__e)                          \
     do {                                         \
-        if((__e) == 0) {                         \
+        if(!(__e)) {                             \
             furi_crash("furi_check failed\r\n"); \
         }                                        \
     } while(0)
@@ -55,7 +55,7 @@ FURI_NORETURN void __furi_halt();
 #ifdef FURI_DEBUG
 #define furi_assert(__e)                          \
     do {                                          \
-        if((__e) == 0) {                          \
+        if(!(__e)) {                              \
             furi_crash("furi_assert failed\r\n"); \
         }                                         \
     } while(0)
diff --git a/furi/core/event_flag.c b/furi/core/event_flag.c
index 5d2a49910..07dd30a16 100644
--- a/furi/core/event_flag.c
+++ b/furi/core/event_flag.c
@@ -25,7 +25,7 @@ uint32_t furi_event_flag_set(FuriEventFlag* instance, uint32_t flags) {
     uint32_t rflags;
     BaseType_t yield;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         yield = pdFALSE;
         if(xEventGroupSetBitsFromISR(hEventGroup, (EventBits_t)flags, &yield) == pdFAIL) {
             rflags = (uint32_t)FuriStatusErrorResource;
@@ -48,7 +48,7 @@ uint32_t furi_event_flag_clear(FuriEventFlag* instance, uint32_t flags) {
     EventGroupHandle_t hEventGroup = (EventGroupHandle_t)instance;
     uint32_t rflags;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         rflags = xEventGroupGetBitsFromISR(hEventGroup);
 
         if(xEventGroupClearBitsFromISR(hEventGroup, (EventBits_t)flags) == pdFAIL) {
@@ -73,7 +73,7 @@ uint32_t furi_event_flag_get(FuriEventFlag* instance) {
     EventGroupHandle_t hEventGroup = (EventGroupHandle_t)instance;
     uint32_t rflags;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         rflags = xEventGroupGetBitsFromISR(hEventGroup);
     } else {
         rflags = xEventGroupGetBits(hEventGroup);
diff --git a/furi/core/memmgr_heap.c b/furi/core/memmgr_heap.c
index 32b2875cc..ac51b4a20 100644
--- a/furi/core/memmgr_heap.c
+++ b/furi/core/memmgr_heap.c
@@ -150,8 +150,7 @@ void memmgr_heap_disable_thread_trace(FuriThreadId thread_id) {
     vTaskSuspendAll();
     {
         memmgr_heap_thread_trace_depth++;
-        furi_check(MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id) != NULL);
-        MemmgrHeapThreadDict_erase(memmgr_heap_thread_dict, (uint32_t)thread_id);
+        furi_check(MemmgrHeapThreadDict_erase(memmgr_heap_thread_dict, (uint32_t)thread_id));
         memmgr_heap_thread_trace_depth--;
     }
     (void)xTaskResumeAll();
@@ -212,7 +211,8 @@ static inline void traceFREE(void* pointer, size_t size) {
         MemmgrHeapAllocDict_t* alloc_dict =
             MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id);
         if(alloc_dict) {
-            MemmgrHeapAllocDict_erase(*alloc_dict, (uint32_t)pointer);
+            // In some cases thread may want to release memory that was not allocated by it
+            (void)MemmgrHeapAllocDict_erase(*alloc_dict, (uint32_t)pointer);
         }
         memmgr_heap_thread_trace_depth--;
     }
diff --git a/furi/core/mutex.c b/furi/core/mutex.c
index 78ea05196..ab66b0f18 100644
--- a/furi/core/mutex.c
+++ b/furi/core/mutex.c
@@ -45,7 +45,7 @@ FuriStatus furi_mutex_acquire(FuriMutex* instance, uint32_t timeout) {
 
     stat = FuriStatusOk;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         stat = FuriStatusErrorISR;
     } else if(hMutex == NULL) {
         stat = FuriStatusErrorParameter;
@@ -85,7 +85,7 @@ FuriStatus furi_mutex_release(FuriMutex* instance) {
 
     stat = FuriStatusOk;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         stat = FuriStatusErrorISR;
     } else if(hMutex == NULL) {
         stat = FuriStatusErrorParameter;
@@ -111,7 +111,7 @@ FuriThreadId furi_mutex_get_owner(FuriMutex* instance) {
 
     hMutex = (SemaphoreHandle_t)((uint32_t)instance & ~1U);
 
-    if((FURI_IS_IRQ_MODE() != 0U) || (hMutex == NULL)) {
+    if((FURI_IS_IRQ_MODE()) || (hMutex == NULL)) {
         owner = 0;
     } else {
         owner = (FuriThreadId)xSemaphoreGetMutexHolder(hMutex);
diff --git a/furi/core/semaphore.c b/furi/core/semaphore.c
index a204cbe6e..8c99bfc54 100644
--- a/furi/core/semaphore.c
+++ b/furi/core/semaphore.c
@@ -45,7 +45,7 @@ FuriStatus furi_semaphore_acquire(FuriSemaphore* instance, uint32_t timeout) {
 
     stat = FuriStatusOk;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         if(timeout != 0U) {
             stat = FuriStatusErrorParameter;
         } else {
@@ -80,7 +80,7 @@ FuriStatus furi_semaphore_release(FuriSemaphore* instance) {
 
     stat = FuriStatusOk;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         yield = pdFALSE;
 
         if(xSemaphoreGiveFromISR(hSemaphore, &yield) != pdTRUE) {
@@ -104,7 +104,7 @@ uint32_t furi_semaphore_get_count(FuriSemaphore* instance) {
     SemaphoreHandle_t hSemaphore = (SemaphoreHandle_t)instance;
     uint32_t count;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         count = (uint32_t)uxSemaphoreGetCountFromISR(hSemaphore);
     } else {
         count = (uint32_t)uxSemaphoreGetCount(hSemaphore);
diff --git a/furi/core/stream_buffer.c b/furi/core/stream_buffer.c
index b9d0629fe..2df84fa5b 100644
--- a/furi/core/stream_buffer.c
+++ b/furi/core/stream_buffer.c
@@ -23,7 +23,7 @@ size_t furi_stream_buffer_send(
     uint32_t timeout) {
     size_t ret;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         BaseType_t yield;
         ret = xStreamBufferSendFromISR(stream_buffer, data, length, &yield);
         portYIELD_FROM_ISR(yield);
@@ -41,7 +41,7 @@ size_t furi_stream_buffer_receive(
     uint32_t timeout) {
     size_t ret;
 
-    if(FURI_IS_IRQ_MODE() != 0U) {
+    if(FURI_IS_IRQ_MODE()) {
         BaseType_t yield;
         ret = xStreamBufferReceiveFromISR(stream_buffer, data, length, &yield);
         portYIELD_FROM_ISR(yield);
diff --git a/furi/core/string.c b/furi/core/string.c
index 099f70c11..901b1f625 100644
--- a/furi/core/string.c
+++ b/furi/core/string.c
@@ -29,13 +29,13 @@ FuriString* furi_string_alloc() {
 }
 
 FuriString* furi_string_alloc_set(const FuriString* s) {
-    FuriString* string = malloc(sizeof(FuriString));
+    FuriString* string = malloc(sizeof(FuriString)); //-V773
     string_init_set(string->string, s->string);
     return string;
 }
 
 FuriString* furi_string_alloc_set_str(const char cstr[]) {
-    FuriString* string = malloc(sizeof(FuriString));
+    FuriString* string = malloc(sizeof(FuriString)); //-V773
     string_init_set(string->string, cstr);
     return string;
 }
diff --git a/furi/core/thread.c b/furi/core/thread.c
index 508146f63..201b47fe7 100644
--- a/furi/core/thread.c
+++ b/furi/core/thread.c
@@ -12,6 +12,8 @@
 #include <furi_hal_rtc.h>
 #include <furi_hal_console.h>
 
+#define TAG "FuriThread"
+
 #define THREAD_NOTIFY_INDEX 1 // Index 0 is used for stream buffers
 
 typedef struct FuriThreadStdout FuriThreadStdout;
@@ -50,6 +52,7 @@ static int32_t __furi_thread_stdout_flush(FuriThread* thread);
 __attribute__((__noreturn__)) void furi_thread_catch() {
     asm volatile("nop"); // extra magic
     furi_crash("You are doing it wrong");
+    __builtin_unreachable();
 }
 
 static void furi_thread_set_state(FuriThread* thread, FuriThreadState state) {
@@ -81,6 +84,12 @@ static void furi_thread_body(void* context) {
     if(thread->heap_trace_enabled == true) {
         furi_delay_ms(33);
         thread->heap_size = memmgr_heap_get_thread_memory((FuriThreadId)task_handle);
+        furi_log_print_format(
+            thread->heap_size ? FuriLogLevelError : FuriLogLevelInfo,
+            TAG,
+            "%s allocation balance: %d",
+            thread->name ? thread->name : "Thread",
+            thread->heap_size);
         memmgr_heap_disable_thread_trace((FuriThreadId)task_handle);
     }
 
@@ -88,8 +97,8 @@ static void furi_thread_body(void* context) {
 
     if(thread->is_service) {
         FURI_LOG_E(
-            "Service",
-            "%s thread exited. Thread memory cannot be reclaimed.",
+            TAG,
+            "%s service thread exited. Thread memory cannot be reclaimed.",
             thread->name ? thread->name : "<unknown service>");
     }
 
@@ -112,6 +121,17 @@ FuriThread* furi_thread_alloc() {
     FuriThread* thread = malloc(sizeof(FuriThread));
     thread->output.buffer = furi_string_alloc();
     thread->is_service = false;
+
+    FuriHalRtcHeapTrackMode mode = furi_hal_rtc_get_heap_track_mode();
+    if(mode == FuriHalRtcHeapTrackModeAll) {
+        thread->heap_trace_enabled = true;
+    } else if(mode == FuriHalRtcHeapTrackModeTree && furi_thread_get_current_id()) {
+        FuriThread* parent = pvTaskGetThreadLocalStoragePointer(NULL, 0);
+        if(parent) thread->heap_trace_enabled = parent->heap_trace_enabled;
+    } else {
+        thread->heap_trace_enabled = false;
+    }
+
     return thread;
 }
 
@@ -228,14 +248,12 @@ FuriThreadId furi_thread_get_id(FuriThread* thread) {
 void furi_thread_enable_heap_trace(FuriThread* thread) {
     furi_assert(thread);
     furi_assert(thread->state == FuriThreadStateStopped);
-    furi_assert(thread->heap_trace_enabled == false);
     thread->heap_trace_enabled = true;
 }
 
 void furi_thread_disable_heap_trace(FuriThread* thread) {
     furi_assert(thread);
     furi_assert(thread->state == FuriThreadStateStopped);
-    furi_assert(thread->heap_trace_enabled == true);
     thread->heap_trace_enabled = false;
 }
 
diff --git a/lib/SConscript b/lib/SConscript
index 60ffabfa9..abede5f33 100644
--- a/lib/SConscript
+++ b/lib/SConscript
@@ -2,19 +2,19 @@ Import("env")
 
 env.Append(
     LINT_SOURCES=[
-        "lib/app-scened-template",
-        "lib/digital_signal",
-        "lib/drivers",
-        "lib/flipper_format",
-        "lib/infrared",
-        "lib/nfc",
-        "lib/one_wire",
-        "lib/ST25RFAL002",
-        "lib/subghz",
-        "lib/toolbox",
-        "lib/u8g2",
-        "lib/update_util",
-        "lib/print",
+        Dir("app-scened-template"),
+        Dir("digital_signal"),
+        Dir("drivers"),
+        Dir("flipper_format"),
+        Dir("infrared"),
+        Dir("nfc"),
+        Dir("one_wire"),
+        Dir("ST25RFAL002"),
+        Dir("subghz"),
+        Dir("toolbox"),
+        Dir("u8g2"),
+        Dir("update_util"),
+        Dir("print"),
     ],
     SDK_HEADERS=[
         File("one_wire/one_wire_host_timing.h"),
diff --git a/lib/flipper_format/flipper_format_stream.c b/lib/flipper_format/flipper_format_stream.c
index 41934a3b1..9cce95d47 100644
--- a/lib/flipper_format/flipper_format_stream.c
+++ b/lib/flipper_format/flipper_format_stream.c
@@ -313,7 +313,7 @@ bool flipper_format_stream_write_value_line(Stream* stream, FlipperStreamWriteDa
                     furi_crash("Unknown FF type");
                 }
 
-                if((size_t)(i + 1) < write_data->data_size) {
+                if(((size_t)i + 1) < write_data->data_size) {
                     furi_string_cat(value, " ");
                 }
 
diff --git a/lib/infrared/encoder_decoder/common/infrared_common_decoder.c b/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
index bff4c73db..7f1c3a4fd 100644
--- a/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
+++ b/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
@@ -85,8 +85,8 @@ static InfraredStatus infrared_common_decode_bits(InfraredCommonDecoder* decoder
         if(timings->min_split_time && !level) {
             if(timing > timings->min_split_time) {
                 /* long low timing - check if we're ready for any of protocol modification */
-                for(size_t i = 0; decoder->protocol->databit_len[i] &&
-                                  (i < COUNT_OF(decoder->protocol->databit_len));
+                for(size_t i = 0; i < COUNT_OF(decoder->protocol->databit_len) &&
+                                  decoder->protocol->databit_len[i];
                     ++i) {
                     if(decoder->protocol->databit_len[i] == decoder->databit_cnt) {
                         return InfraredStatusReady;
@@ -199,7 +199,7 @@ InfraredMessage* infrared_common_decoder_check_ready(InfraredCommonDecoder* deco
     bool found_length = false;
 
     for(size_t i = 0;
-        decoder->protocol->databit_len[i] && (i < COUNT_OF(decoder->protocol->databit_len));
+        i < COUNT_OF(decoder->protocol->databit_len) && decoder->protocol->databit_len[i];
         ++i) {
         if(decoder->protocol->databit_len[i] == decoder->databit_cnt) {
             found_length = true;
diff --git a/lib/infrared/encoder_decoder/common/infrared_common_protocol_defs.c b/lib/infrared/encoder_decoder/common/infrared_common_protocol_defs.c
index e8f7664a7..3dd26e9d8 100644
--- a/lib/infrared/encoder_decoder/common/infrared_common_protocol_defs.c
+++ b/lib/infrared/encoder_decoder/common/infrared_common_protocol_defs.c
@@ -115,3 +115,26 @@ const InfraredCommonProtocolSpec protocol_sirc = {
     .decode_repeat = NULL,
     .encode_repeat = infrared_encoder_sirc_encode_repeat,
 };
+
+const InfraredCommonProtocolSpec protocol_kaseikyo = {
+    .timings =
+        {
+            .preamble_mark = INFRARED_KASEIKYO_PREAMBLE_MARK,
+            .preamble_space = INFRARED_KASEIKYO_PREAMBLE_SPACE,
+            .bit1_mark = INFRARED_KASEIKYO_BIT1_MARK,
+            .bit1_space = INFRARED_KASEIKYO_BIT1_SPACE,
+            .bit0_mark = INFRARED_KASEIKYO_BIT0_MARK,
+            .bit0_space = INFRARED_KASEIKYO_BIT0_SPACE,
+            .preamble_tolerance = INFRARED_KASEIKYO_PREAMBLE_TOLERANCE,
+            .bit_tolerance = INFRARED_KASEIKYO_BIT_TOLERANCE,
+            .silence_time = INFRARED_KASEIKYO_SILENCE,
+            .min_split_time = INFRARED_KASEIKYO_MIN_SPLIT_TIME,
+        },
+    .databit_len[0] = 48,
+    .no_stop_bit = false,
+    .decode = infrared_common_decode_pdwm,
+    .encode = infrared_common_encode_pdwm,
+    .interpret = infrared_decoder_kaseikyo_interpret,
+    .decode_repeat = NULL,
+    .encode_repeat = NULL,
+};
diff --git a/lib/infrared/encoder_decoder/infrared.c b/lib/infrared/encoder_decoder/infrared.c
index 71bd6bb6d..2c5ef0fff 100644
--- a/lib/infrared/encoder_decoder/infrared.c
+++ b/lib/infrared/encoder_decoder/infrared.c
@@ -110,6 +110,20 @@ static const InfraredEncoderDecoder infrared_encoder_decoder[] = {
              .free = infrared_encoder_sirc_free},
         .get_protocol_spec = infrared_sirc_get_spec,
     },
+    {
+        .decoder =
+            {.alloc = infrared_decoder_kaseikyo_alloc,
+             .decode = infrared_decoder_kaseikyo_decode,
+             .reset = infrared_decoder_kaseikyo_reset,
+             .check_ready = infrared_decoder_kaseikyo_check_ready,
+             .free = infrared_decoder_kaseikyo_free},
+        .encoder =
+            {.alloc = infrared_encoder_kaseikyo_alloc,
+             .encode = infrared_encoder_kaseikyo_encode,
+             .reset = infrared_encoder_kaseikyo_reset,
+             .free = infrared_encoder_kaseikyo_free},
+        .get_protocol_spec = infrared_kaseikyo_get_spec,
+    },
 };
 
 static int infrared_find_index_by_protocol(InfraredProtocol protocol);
diff --git a/lib/infrared/encoder_decoder/infrared.h b/lib/infrared/encoder_decoder/infrared.h
index 945913000..086950f1e 100644
--- a/lib/infrared/encoder_decoder/infrared.h
+++ b/lib/infrared/encoder_decoder/infrared.h
@@ -31,6 +31,7 @@ typedef enum {
     InfraredProtocolSIRC,
     InfraredProtocolSIRC15,
     InfraredProtocolSIRC20,
+    InfraredProtocolKaseikyo,
     InfraredProtocolMAX,
 } InfraredProtocol;
 
diff --git a/lib/infrared/encoder_decoder/infrared_protocol_defs_i.h b/lib/infrared/encoder_decoder/infrared_protocol_defs_i.h
index 575961f13..6146f7b4e 100644
--- a/lib/infrared/encoder_decoder/infrared_protocol_defs_i.h
+++ b/lib/infrared/encoder_decoder/infrared_protocol_defs_i.h
@@ -267,3 +267,54 @@ InfraredStatus infrared_encoder_sirc_encode_repeat(
     bool* level);
 
 extern const InfraredCommonProtocolSpec protocol_sirc;
+
+/***************************************************************************************************
+*   Kaseikyo protocol description
+*   https://github.com/Arduino-IRremote/Arduino-IRremote/blob/master/src/ir_Kaseikyo.hpp
+****************************************************************************************************
+*     Preamble   Preamble      Pulse Distance/Width          Pause       Preamble   Preamble
+*       mark      space            Modulation             up to period    repeat     repeat
+*                                                                          mark       space
+*
+*        3360      1665               48 bit              ...130000        3456       1728
+*     __________          _ _ _ _  _  _  _ _ _  _  _ _ _                ___________
+* ____          __________ _ _ _ __ __ __ _ _ __ __ _ _ ________________           ___________
+*
+***************************************************************************************************/
+
+#define INFRARED_KASEIKYO_UNIT 432
+#define INFRARED_KASEIKYO_PREAMBLE_MARK (8 * INFRARED_KASEIKYO_UNIT)
+#define INFRARED_KASEIKYO_PREAMBLE_SPACE (4 * INFRARED_KASEIKYO_UNIT)
+#define INFRARED_KASEIKYO_BIT1_MARK INFRARED_KASEIKYO_UNIT
+#define INFRARED_KASEIKYO_BIT1_SPACE (3 * INFRARED_KASEIKYO_UNIT)
+#define INFRARED_KASEIKYO_BIT0_MARK INFRARED_KASEIKYO_UNIT
+#define INFRARED_KASEIKYO_BIT0_SPACE INFRARED_KASEIKYO_UNIT
+#define INFRARED_KASEIKYO_REPEAT_PERIOD 130000
+#define INFRARED_KASEIKYO_SILENCE INFRARED_KASEIKYO_REPEAT_PERIOD
+#define INFRARED_KASEIKYO_MIN_SPLIT_TIME INFRARED_KASEIKYO_REPEAT_PAUSE_MIN
+#define INFRARED_KASEIKYO_REPEAT_PAUSE_MIN 4000
+#define INFRARED_KASEIKYO_REPEAT_PAUSE_MAX 150000
+#define INFRARED_KASEIKYO_REPEAT_MARK INFRARED_KASEIKYO_PREAMBLE_MARK
+#define INFRARED_KASEIKYO_REPEAT_SPACE (INFRARED_KASEIKYO_REPEAT_PERIOD - 56000)
+#define INFRARED_KASEIKYO_PREAMBLE_TOLERANCE 200 // us
+#define INFRARED_KASEIKYO_BIT_TOLERANCE 120 // us
+
+void* infrared_decoder_kaseikyo_alloc(void);
+void infrared_decoder_kaseikyo_reset(void* decoder);
+void infrared_decoder_kaseikyo_free(void* decoder);
+InfraredMessage* infrared_decoder_kaseikyo_check_ready(void* decoder);
+InfraredMessage* infrared_decoder_kaseikyo_decode(void* decoder, bool level, uint32_t duration);
+void* infrared_encoder_kaseikyo_alloc(void);
+InfraredStatus
+    infrared_encoder_kaseikyo_encode(void* encoder_ptr, uint32_t* duration, bool* level);
+void infrared_encoder_kaseikyo_reset(void* encoder_ptr, const InfraredMessage* message);
+void infrared_encoder_kaseikyo_free(void* encoder_ptr);
+bool infrared_decoder_kaseikyo_interpret(InfraredCommonDecoder* decoder);
+InfraredStatus infrared_decoder_kaseikyo_decode_repeat(InfraredCommonDecoder* decoder);
+InfraredStatus infrared_encoder_kaseikyo_encode_repeat(
+    InfraredCommonEncoder* encoder,
+    uint32_t* duration,
+    bool* level);
+const InfraredProtocolSpecification* infrared_kaseikyo_get_spec(InfraredProtocol protocol);
+
+extern const InfraredCommonProtocolSpec protocol_kaseikyo;
diff --git a/lib/infrared/encoder_decoder/kaseikyo/infrared_decoder_kaseikyo.c b/lib/infrared/encoder_decoder/kaseikyo/infrared_decoder_kaseikyo.c
new file mode 100644
index 000000000..b8db81d7e
--- /dev/null
+++ b/lib/infrared/encoder_decoder/kaseikyo/infrared_decoder_kaseikyo.c
@@ -0,0 +1,54 @@
+#include "infrared.h"
+#include "infrared_protocol_defs_i.h"
+#include <stdbool.h>
+#include <stdint.h>
+#include <furi.h>
+#include "../infrared_i.h"
+
+InfraredMessage* infrared_decoder_kaseikyo_check_ready(void* ctx) {
+    return infrared_common_decoder_check_ready(ctx);
+}
+
+bool infrared_decoder_kaseikyo_interpret(InfraredCommonDecoder* decoder) {
+    furi_assert(decoder);
+
+    bool result = false;
+    uint16_t vendor_id = ((uint16_t)(decoder->data[1]) << 8) | (uint16_t)decoder->data[0];
+    uint8_t vendor_parity = decoder->data[2] & 0x0f;
+    uint8_t genre1 = decoder->data[2] >> 4;
+    uint8_t genre2 = decoder->data[3] & 0x0f;
+    uint16_t data = (uint16_t)(decoder->data[3] >> 4) | ((uint16_t)(decoder->data[4] & 0x3f) << 4);
+    uint8_t id = decoder->data[4] >> 6;
+    uint8_t parity = decoder->data[5];
+
+    uint8_t vendor_parity_check = decoder->data[0] ^ decoder->data[1];
+    vendor_parity_check = (vendor_parity_check & 0xf) ^ (vendor_parity_check >> 4);
+    uint8_t parity_check = decoder->data[2] ^ decoder->data[3] ^ decoder->data[4];
+
+    if(vendor_parity == vendor_parity_check && parity == parity_check) {
+        decoder->message.command = (uint32_t)data;
+        decoder->message.address = ((uint32_t)id << 24) | ((uint32_t)vendor_id << 8) |
+                                   ((uint32_t)genre1 << 4) | (uint32_t)genre2;
+        decoder->message.protocol = InfraredProtocolKaseikyo;
+        decoder->message.repeat = false;
+        result = true;
+    }
+
+    return result;
+}
+
+void* infrared_decoder_kaseikyo_alloc(void) {
+    return infrared_common_decoder_alloc(&protocol_kaseikyo);
+}
+
+InfraredMessage* infrared_decoder_kaseikyo_decode(void* decoder, bool level, uint32_t duration) {
+    return infrared_common_decode(decoder, level, duration);
+}
+
+void infrared_decoder_kaseikyo_free(void* decoder) {
+    infrared_common_decoder_free(decoder);
+}
+
+void infrared_decoder_kaseikyo_reset(void* decoder) {
+    infrared_common_decoder_reset(decoder);
+}
diff --git a/lib/infrared/encoder_decoder/kaseikyo/infrared_encoder_kaseikyo.c b/lib/infrared/encoder_decoder/kaseikyo/infrared_encoder_kaseikyo.c
new file mode 100644
index 000000000..5814c7255
--- /dev/null
+++ b/lib/infrared/encoder_decoder/kaseikyo/infrared_encoder_kaseikyo.c
@@ -0,0 +1,45 @@
+#include <core/check.h>
+#include "common/infrared_common_i.h"
+#include <stdint.h>
+#include "../infrared_i.h"
+#include "infrared_protocol_defs_i.h"
+#include <furi.h>
+
+void infrared_encoder_kaseikyo_reset(void* encoder_ptr, const InfraredMessage* message) {
+    furi_assert(encoder_ptr);
+
+    InfraredCommonEncoder* encoder = encoder_ptr;
+    infrared_common_encoder_reset(encoder);
+
+    uint32_t address = message->address;
+    uint16_t command = message->command;
+
+    uint8_t id = (address >> 24) & 3;
+    uint16_t vendor_id = (address >> 8) & 0xffff;
+    uint8_t genre1 = (address >> 4) & 0xf;
+    uint8_t genre2 = address & 0xf;
+
+    encoder->data[0] = (uint8_t)(vendor_id & 0xff);
+    encoder->data[1] = (uint8_t)(vendor_id >> 8);
+    uint8_t vendor_parity = encoder->data[0] ^ encoder->data[1];
+    vendor_parity = (vendor_parity & 0xf) ^ (vendor_parity >> 4);
+    encoder->data[2] = (vendor_parity & 0xf) | (genre1 << 4);
+    encoder->data[3] = (genre2 & 0xf) | ((uint8_t)(command & 0xf) << 4);
+    encoder->data[4] = (id << 6) | (uint8_t)(command >> 4);
+    encoder->data[5] = encoder->data[2] ^ encoder->data[3] ^ encoder->data[4];
+
+    encoder->bits_to_encode = encoder->protocol->databit_len[0];
+}
+
+void* infrared_encoder_kaseikyo_alloc(void) {
+    return infrared_common_encoder_alloc(&protocol_kaseikyo);
+}
+
+void infrared_encoder_kaseikyo_free(void* encoder_ptr) {
+    infrared_common_encoder_free(encoder_ptr);
+}
+
+InfraredStatus
+    infrared_encoder_kaseikyo_encode(void* encoder_ptr, uint32_t* duration, bool* level) {
+    return infrared_common_encode(encoder_ptr, duration, level);
+}
diff --git a/lib/infrared/encoder_decoder/kaseikyo/infrared_kaseikyo_spec.c b/lib/infrared/encoder_decoder/kaseikyo/infrared_kaseikyo_spec.c
new file mode 100644
index 000000000..87c86c7b3
--- /dev/null
+++ b/lib/infrared/encoder_decoder/kaseikyo/infrared_kaseikyo_spec.c
@@ -0,0 +1,17 @@
+#include "../infrared_i.h"
+#include "infrared_protocol_defs_i.h"
+
+static const InfraredProtocolSpecification infrared_kaseikyo_protocol_specification = {
+    .name = "Kaseikyo",
+    .address_length = 26,
+    .command_length = 10,
+    .frequency = INFRARED_COMMON_CARRIER_FREQUENCY,
+    .duty_cycle = INFRARED_COMMON_DUTY_CYCLE,
+};
+
+const InfraredProtocolSpecification* infrared_kaseikyo_get_spec(InfraredProtocol protocol) {
+    if(protocol == InfraredProtocolKaseikyo)
+        return &infrared_kaseikyo_protocol_specification;
+    else
+        return NULL;
+}
diff --git a/lib/lfrfid/SConscript b/lib/lfrfid/SConscript
index 69ea9d3c1..f9431ca75 100644
--- a/lib/lfrfid/SConscript
+++ b/lib/lfrfid/SConscript
@@ -2,7 +2,7 @@ Import("env")
 
 env.Append(
     LINT_SOURCES=[
-        "lib/lfrfid",
+        Dir("."),
     ],
     CPPPATH=[
         "#/lib/lfrfid",
diff --git a/lib/lfrfid/lfrfid_worker.c b/lib/lfrfid/lfrfid_worker.c
index 8b4f8b6a9..f3e37fa3c 100644
--- a/lib/lfrfid/lfrfid_worker.c
+++ b/lib/lfrfid/lfrfid_worker.c
@@ -140,9 +140,8 @@ size_t lfrfid_worker_dict_get_data_size(LFRFIDWorker* worker, LFRFIDProtocol pro
 
 static int32_t lfrfid_worker_thread(void* thread_context) {
     LFRFIDWorker* worker = thread_context;
-    bool running = true;
 
-    while(running) {
+    while(true) {
         uint32_t flags = furi_thread_flags_wait(LFRFIDEventAll, FuriFlagWaitAny, FuriWaitForever);
         if(flags != FuriFlagErrorTimeout) {
             // stop thread
diff --git a/lib/nfc/SConscript b/lib/nfc/SConscript
index c6b70a677..b086298de 100644
--- a/lib/nfc/SConscript
+++ b/lib/nfc/SConscript
@@ -5,7 +5,7 @@ env.Append(
         "#/lib/nfc",
     ],
     SDK_HEADERS=[
-        File("#/lib/nfc/nfc_device.h"),
+        File("nfc_device.h"),
     ],
 )
 
diff --git a/lib/nfc/nfc_device.c b/lib/nfc/nfc_device.c
index a5e3fc14f..9f17aed3a 100644
--- a/lib/nfc/nfc_device.c
+++ b/lib/nfc/nfc_device.c
@@ -1006,12 +1006,7 @@ static void nfc_device_get_shadow_path(FuriString* orig_path, FuriString* shadow
     furi_string_cat_printf(shadow_path, "%s", NFC_APP_SHADOW_EXTENSION);
 }
 
-static bool nfc_device_save_file(
-    NfcDevice* dev,
-    const char* dev_name,
-    const char* folder,
-    const char* extension,
-    bool use_load_path) {
+bool nfc_device_save(NfcDevice* dev, const char* dev_name) {
     furi_assert(dev);
 
     bool saved = false;
@@ -1021,19 +1016,10 @@ static bool nfc_device_save_file(
     temp_str = furi_string_alloc();
 
     do {
-        if(use_load_path && !furi_string_empty(dev->load_path)) {
-            // Get directory name
-            path_extract_dirname(furi_string_get_cstr(dev->load_path), temp_str);
-            // Create nfc directory if necessary
-            if(!storage_simply_mkdir(dev->storage, furi_string_get_cstr(temp_str))) break;
-            // Make path to file to save
-            furi_string_cat_printf(temp_str, "/%s%s", dev_name, extension);
-        } else {
-            // Create nfc directory if necessary
-            if(!storage_simply_mkdir(dev->storage, NFC_APP_FOLDER)) break;
-            // First remove nfc device file if it was saved
-            furi_string_printf(temp_str, "%s/%s%s", folder, dev_name, extension);
-        }
+        // Create nfc directory if necessary
+        if(!storage_simply_mkdir(dev->storage, NFC_APP_FOLDER)) break;
+        // First remove nfc device file if it was saved
+        furi_string_printf(temp_str, "%s", dev_name);
         // Open file
         if(!flipper_format_file_open_always(file, furi_string_get_cstr(temp_str))) break;
         // Write header
@@ -1072,13 +1058,19 @@ static bool nfc_device_save_file(
     return saved;
 }
 
-bool nfc_device_save(NfcDevice* dev, const char* dev_name) {
-    return nfc_device_save_file(dev, dev_name, NFC_APP_FOLDER, NFC_APP_EXTENSION, true);
-}
-
-bool nfc_device_save_shadow(NfcDevice* dev, const char* dev_name) {
+bool nfc_device_save_shadow(NfcDevice* dev, const char* path) {
     dev->shadow_file_exist = true;
-    return nfc_device_save_file(dev, dev_name, NFC_APP_FOLDER, NFC_APP_SHADOW_EXTENSION, true);
+    // Replace extension from .nfc to .shd if necessary
+    FuriString* orig_path = furi_string_alloc();
+    furi_string_set_str(orig_path, path);
+    FuriString* shadow_path = furi_string_alloc();
+    nfc_device_get_shadow_path(orig_path, shadow_path);
+
+    bool file_saved = nfc_device_save(dev, furi_string_get_cstr(shadow_path));
+    furi_string_free(orig_path);
+    furi_string_free(shadow_path);
+
+    return file_saved;
 }
 
 static bool nfc_device_load_data(NfcDevice* dev, FuriString* path, bool show_dialog) {
@@ -1195,7 +1187,7 @@ bool nfc_file_select(NfcDevice* dev) {
     };
 
     bool res =
-        dialog_file_browser_show(dev->dialogs, dev->load_path, nfc_app_folder, &browser_options);
+        dialog_file_browser_show(dev->dialogs, dev->load_path, dev->load_path, &browser_options);
 
     furi_string_free(nfc_app_folder);
     if(res) {
diff --git a/lib/nfc/nfc_device.h b/lib/nfc/nfc_device.h
index c8e8517ae..3d302c18b 100644
--- a/lib/nfc/nfc_device.h
+++ b/lib/nfc/nfc_device.h
@@ -51,9 +51,19 @@ typedef struct {
     MfClassicDict* dict;
 } NfcMfClassicDictAttackData;
 
+typedef enum {
+    NfcReadModeAuto,
+    NfcReadModeMfClassic,
+    NfcReadModeMfUltralight,
+    NfcReadModeMfDesfire,
+    NfcReadModeEMV,
+    NfcReadModeNFCA,
+} NfcReadMode;
+
 typedef struct {
     FuriHalNfcDevData nfc_data;
     NfcProtocol protocol;
+    NfcReadMode read_mode;
     union {
         NfcReaderRequestData reader_data;
         NfcMfClassicDictAttackData mf_classic_dict_attack_data;
diff --git a/lib/nfc/nfc_worker.c b/lib/nfc/nfc_worker.c
index e1e379a06..5ad37c6e3 100644
--- a/lib/nfc/nfc_worker.c
+++ b/lib/nfc/nfc_worker.c
@@ -70,12 +70,12 @@ void nfc_worker_start(
 
 void nfc_worker_stop(NfcWorker* nfc_worker) {
     furi_assert(nfc_worker);
-    if(nfc_worker->state == NfcWorkerStateBroken || nfc_worker->state == NfcWorkerStateReady) {
-        return;
+    furi_assert(nfc_worker->thread);
+    if(furi_thread_get_state(nfc_worker->thread) != FuriThreadStateStopped) {
+        furi_hal_nfc_stop();
+        nfc_worker_change_state(nfc_worker, NfcWorkerStateStop);
+        furi_thread_join(nfc_worker->thread);
     }
-    furi_hal_nfc_stop();
-    nfc_worker_change_state(nfc_worker, NfcWorkerStateStop);
-    furi_thread_join(nfc_worker->thread);
 }
 
 void nfc_worker_change_state(NfcWorker* nfc_worker, NfcWorkerState state) {
@@ -90,7 +90,11 @@ int32_t nfc_worker_task(void* context) {
     furi_hal_nfc_exit_sleep();
 
     if(nfc_worker->state == NfcWorkerStateRead) {
-        nfc_worker_read(nfc_worker);
+        if(nfc_worker->dev_data->read_mode == NfcReadModeAuto) {
+            nfc_worker_read(nfc_worker);
+        } else {
+            nfc_worker_read_type(nfc_worker);
+        }
     } else if(nfc_worker->state == NfcWorkerStateUidEmulate) {
         nfc_worker_emulate_uid(nfc_worker);
     } else if(nfc_worker->state == NfcWorkerStateEmulateApdu) {
@@ -394,6 +398,81 @@ void nfc_worker_read(NfcWorker* nfc_worker) {
     }
 }
 
+void nfc_worker_read_type(NfcWorker* nfc_worker) {
+    furi_assert(nfc_worker);
+    furi_assert(nfc_worker->callback);
+
+    NfcReadMode read_mode = nfc_worker->dev_data->read_mode;
+    nfc_device_data_clear(nfc_worker->dev_data);
+    NfcDeviceData* dev_data = nfc_worker->dev_data;
+    FuriHalNfcDevData* nfc_data = &nfc_worker->dev_data->nfc_data;
+    FuriHalNfcTxRxContext tx_rx = {};
+    NfcWorkerEvent event = 0;
+    bool card_not_detected_notified = false;
+
+    while(nfc_worker->state == NfcWorkerStateRead) {
+        if(furi_hal_nfc_detect(nfc_data, 300)) {
+            FURI_LOG_D(TAG, "Card detected");
+            furi_hal_nfc_sleep();
+            // Process first found device
+            nfc_worker->callback(NfcWorkerEventCardDetected, nfc_worker->context);
+            card_not_detected_notified = false;
+            if(nfc_data->type == FuriHalNfcTypeA) {
+                if(read_mode == NfcReadModeMfClassic) {
+                    nfc_worker->dev_data->protocol = NfcDeviceProtocolMifareClassic;
+                    nfc_worker->dev_data->mf_classic_data.type = mf_classic_get_classic_type(
+                        nfc_data->atqa[0], nfc_data->atqa[1], nfc_data->sak);
+                    if(nfc_worker_read_mf_classic(nfc_worker, &tx_rx)) {
+                        FURI_LOG_D(TAG, "Card read");
+                        dev_data->protocol = NfcDeviceProtocolMifareClassic;
+                        event = NfcWorkerEventReadMfClassicDone;
+                        break;
+                    } else {
+                        FURI_LOG_D(TAG, "Card read failed");
+                        dev_data->protocol = NfcDeviceProtocolMifareClassic;
+                        event = NfcWorkerEventReadMfClassicDictAttackRequired;
+                        break;
+                    }
+                } else if(read_mode == NfcReadModeMfUltralight) {
+                    FURI_LOG_I(TAG, "Mifare Ultralight / NTAG");
+                    nfc_worker->dev_data->protocol = NfcDeviceProtocolMifareUl;
+                    if(nfc_worker_read_mf_ultralight(nfc_worker, &tx_rx)) {
+                        event = NfcWorkerEventReadMfUltralight;
+                        break;
+                    }
+                } else if(read_mode == NfcReadModeMfDesfire) {
+                    nfc_worker->dev_data->protocol = NfcDeviceProtocolMifareDesfire;
+                    if(nfc_worker_read_mf_desfire(nfc_worker, &tx_rx)) {
+                        event = NfcWorkerEventReadMfDesfire;
+                        break;
+                    }
+                } else if(read_mode == NfcReadModeEMV) {
+                    nfc_worker->dev_data->protocol = NfcDeviceProtocolEMV;
+                    if(nfc_worker_read_bank_card(nfc_worker, &tx_rx)) {
+                        event = NfcWorkerEventReadBankCard;
+                        break;
+                    }
+                } else if(read_mode == NfcReadModeNFCA) {
+                    nfc_worker->dev_data->protocol = NfcDeviceProtocolUnknown;
+                    event = NfcWorkerEventReadUidNfcA;
+                    break;
+                }
+            } else {
+                if(!card_not_detected_notified) {
+                    nfc_worker->callback(NfcWorkerEventNoCardDetected, nfc_worker->context);
+                    card_not_detected_notified = true;
+                }
+            }
+        }
+        furi_hal_nfc_sleep();
+        furi_delay_ms(100);
+    }
+    // Notify caller and exit
+    if(event > NfcWorkerEventReserved) {
+        nfc_worker->callback(event, nfc_worker->context);
+    }
+}
+
 void nfc_worker_emulate_uid(NfcWorker* nfc_worker) {
     FuriHalNfcTxRxContext tx_rx = {};
     FuriHalNfcDevData* data = &nfc_worker->dev_data->nfc_data;
diff --git a/lib/nfc/nfc_worker.h b/lib/nfc/nfc_worker.h
index ce3a18241..ddee34c95 100644
--- a/lib/nfc/nfc_worker.h
+++ b/lib/nfc/nfc_worker.h
@@ -7,7 +7,6 @@ typedef struct NfcWorker NfcWorker;
 typedef enum {
     // Init states
     NfcWorkerStateNone,
-    NfcWorkerStateBroken,
     NfcWorkerStateReady,
     // Main worker states
     NfcWorkerStateRead,
diff --git a/lib/nfc/nfc_worker_i.h b/lib/nfc/nfc_worker_i.h
index b9f69e620..9733426ab 100644
--- a/lib/nfc/nfc_worker_i.h
+++ b/lib/nfc/nfc_worker_i.h
@@ -35,6 +35,8 @@ int32_t nfc_worker_task(void* context);
 
 void nfc_worker_read(NfcWorker* nfc_worker);
 
+void nfc_worker_read_type(NfcWorker* nfc_worker);
+
 void nfc_worker_emulate_uid(NfcWorker* nfc_worker);
 
 void nfc_worker_emulate_mf_ultralight(NfcWorker* nfc_worker);
diff --git a/lib/nfc/protocols/mifare_classic.c b/lib/nfc/protocols/mifare_classic.c
index 7b0e17975..b7a52bc01 100644
--- a/lib/nfc/protocols/mifare_classic.c
+++ b/lib/nfc/protocols/mifare_classic.c
@@ -82,7 +82,7 @@ uint8_t mf_classic_get_total_sectors_num(MfClassicType type) {
     }
 }
 
-static uint16_t mf_classic_get_total_block_num(MfClassicType type) {
+uint16_t mf_classic_get_total_block_num(MfClassicType type) {
     if(type == MfClassicType1k) {
         return 64;
     } else if(type == MfClassicType4k) {
diff --git a/lib/nfc/protocols/mifare_classic.h b/lib/nfc/protocols/mifare_classic.h
index d5467b100..9a0bb5790 100644
--- a/lib/nfc/protocols/mifare_classic.h
+++ b/lib/nfc/protocols/mifare_classic.h
@@ -98,6 +98,8 @@ MfClassicType mf_classic_get_classic_type(int8_t ATQA0, uint8_t ATQA1, uint8_t S
 
 uint8_t mf_classic_get_total_sectors_num(MfClassicType type);
 
+uint16_t mf_classic_get_total_block_num(MfClassicType type);
+
 uint8_t mf_classic_get_sector_trailer_block_num_by_sector(uint8_t sector);
 
 bool mf_classic_is_sector_trailer(uint8_t block);
diff --git a/lib/print/printf_tiny.c b/lib/print/printf_tiny.c
index 0db11922d..6e47f6528 100644
--- a/lib/print/printf_tiny.c
+++ b/lib/print/printf_tiny.c
@@ -541,7 +541,7 @@ static size_t _etoa(
     exp2 = (int)(expval * 3.321928094887362 + 0.5);
     const double z = expval * 2.302585092994046 - exp2 * 0.6931471805599453;
     const double z2 = z * z;
-    conv.U = (uint64_t)(exp2 + 1023) << 52U;
+    conv.U = ((uint64_t)exp2 + 1023) << 52U;
     // compute exp(z) using continued fractions, see https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex
     conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));
     // correct for rounding errors
diff --git a/lib/subghz/protocols/power_smart.c b/lib/subghz/protocols/power_smart.c
index 63ca78711..1e8d10e95 100644
--- a/lib/subghz/protocols/power_smart.c
+++ b/lib/subghz/protocols/power_smart.c
@@ -312,7 +312,6 @@ void subghz_protocol_decoder_power_smart_feed(
         if((instance->decoder.decode_data & POWER_SMART_PACKET_HEADER_MASK) ==
            POWER_SMART_PACKET_HEADER) {
             if(subghz_protocol_power_smart_chek_valid(instance->decoder.decode_data)) {
-                instance->decoder.decode_data = instance->decoder.decode_data;
                 instance->generic.data = instance->decoder.decode_data;
                 instance->generic.data_count_bit =
                     subghz_protocol_power_smart_const.min_count_bit_for_found;
diff --git a/lib/subghz/subghz_keystore.c b/lib/subghz/subghz_keystore.c
index 1b4b3b716..e06bd9796 100644
--- a/lib/subghz/subghz_keystore.c
+++ b/lib/subghz/subghz_keystore.c
@@ -464,7 +464,7 @@ bool subghz_keystore_raw_encrypted_save(
             }
             stream_write_cstring(output_stream, encrypted_line);
 
-        } while(ret > 0 && result);
+        } while(result);
 
         flipper_format_free(output_flipper_format);
 
diff --git a/lib/toolbox/path.c b/lib/toolbox/path.c
index 53e9fc092..ce65aca4f 100644
--- a/lib/toolbox/path.c
+++ b/lib/toolbox/path.c
@@ -38,7 +38,7 @@ void path_extract_extension(FuriString* path, char* ext, size_t ext_len_max) {
     size_t dot = furi_string_search_rchar(path, '.');
     size_t filename_start = furi_string_search_rchar(path, '/');
 
-    if((dot > 0) && (filename_start < dot)) {
+    if((dot != FURI_STRING_FAILURE) && (filename_start < dot)) {
         strlcpy(ext, &(furi_string_get_cstr(path))[dot], ext_len_max);
     }
 }
diff --git a/lib/toolbox/random_name.c b/lib/toolbox/random_name.c
index 5a5374398..64e712c7c 100644
--- a/lib/toolbox/random_name.c
+++ b/lib/toolbox/random_name.c
@@ -5,12 +5,6 @@
 #include <furi.h>
 
 void set_random_name(char* name, uint8_t max_name_size) {
-    static bool rand_generator_inited = false;
-
-    if(!rand_generator_inited) {
-        srand(DWT->CYCCNT);
-        rand_generator_inited = true;
-    }
     const char* prefix[] = {
         "ancient",     "hollow",    "strange",    "disappeared", "unknown",
         "unthinkable", "unnamable", "nameless",   "my",          "concealed",
diff --git a/scripts/fbt/appmanifest.py b/scripts/fbt/appmanifest.py
index de7c6b682..908a64a6f 100644
--- a/scripts/fbt/appmanifest.py
+++ b/scripts/fbt/appmanifest.py
@@ -52,6 +52,8 @@ class FlipperApplication:
     icon: Optional[str] = None
     order: int = 0
     sdk_headers: List[str] = field(default_factory=list)
+    targets: List[str] = field(default_factory=lambda: ["all"])
+
     # .fap-specific
     sources: List[str] = field(default_factory=lambda: ["*.c*"])
     fap_version: Tuple[int] = field(default_factory=lambda: (0, 1))
@@ -135,8 +137,8 @@ class AppManager:
             raise FlipperManifestException(f"Duplicate app declaration: {app.appid}")
         self.known_apps[app.appid] = app
 
-    def filter_apps(self, applist: List[str]):
-        return AppBuildset(self, applist)
+    def filter_apps(self, applist: List[str], hw_target: str):
+        return AppBuildset(self, applist, hw_target)
 
 
 class AppBuilderException(Exception):
@@ -155,11 +157,13 @@ class AppBuildset:
         FlipperAppType.STARTUP,
     )
 
-    def __init__(self, appmgr: AppManager, appnames: List[str]):
+    def __init__(self, appmgr: AppManager, appnames: List[str], hw_target: str):
         self.appmgr = appmgr
         self.appnames = set(appnames)
+        self.hw_target = hw_target
         self._orig_appnames = appnames
         self._process_deps()
+        self._filter_by_target()
         self._check_conflicts()
         self._check_unsatisfied()  # unneeded?
         self.apps = sorted(
@@ -170,6 +174,16 @@ class AppBuildset:
     def _is_missing_dep(self, dep_name: str):
         return dep_name not in self.appnames
 
+    def _filter_by_target(self):
+        for appname in self.appnames.copy():
+            app = self.appmgr.get(appname)
+            # if app.apptype not in self.BUILTIN_APP_TYPES:
+            if not any(map(lambda t: t in app.targets, ["all", self.hw_target])):
+                print(
+                    f"Removing {appname} due to target mismatch (building for {self.hw_target}, app supports {app.targets}"
+                )
+                self.appnames.remove(appname)
+
     def _process_deps(self):
         while True:
             provided = []
diff --git a/scripts/fbt/elfmanifest.py b/scripts/fbt/elfmanifest.py
index 313a64c09..17bceddf4 100644
--- a/scripts/fbt/elfmanifest.py
+++ b/scripts/fbt/elfmanifest.py
@@ -5,6 +5,7 @@ import struct
 from dataclasses import dataclass, field
 
 from .appmanifest import FlipperApplication
+from flipper.assets.icon import file2image
 
 
 _MANIFEST_MAGIC = 0x52474448
@@ -53,8 +54,6 @@ def assemble_manifest_data(
 ):
     image_data = b""
     if app_manifest.fap_icon:
-        from flipper.assets.icon import file2image
-
         image = file2image(os.path.join(app_manifest._apppath, app_manifest.fap_icon))
         if (image.width, image.height) != (10, 10):
             raise ValueError(
diff --git a/scripts/fbt/sdk/cache.py b/scripts/fbt/sdk/cache.py
index 62d42798c..756c37827 100644
--- a/scripts/fbt/sdk/cache.py
+++ b/scripts/fbt/sdk/cache.py
@@ -89,6 +89,9 @@ class SdkCache:
         syms.update(map(lambda e: e.name, self.get_variables()))
         return syms
 
+    def get_disabled_names(self):
+        return set(map(lambda e: e.name, self.disabled_entries))
+
     def get_functions(self):
         return self._filter_enabled(self.sdk.functions)
 
diff --git a/scripts/fbt/util.py b/scripts/fbt/util.py
index f5404458e..ee7562058 100644
--- a/scripts/fbt/util.py
+++ b/scripts/fbt/util.py
@@ -1,7 +1,6 @@
 import SCons
 from SCons.Subst import quote_spaces
 from SCons.Errors import StopError
-from SCons.Node.FS import _my_normcase
 
 import re
 import os
@@ -43,12 +42,24 @@ def single_quote(arg_list):
     return " ".join(f"'{arg}'" if " " in arg else str(arg) for arg in arg_list)
 
 
-def extract_abs_dir_path(node):
+def extract_abs_dir(node):
     if isinstance(node, SCons.Node.FS.EntryProxy):
         node = node.get()
 
     for repo_dir in node.get_all_rdirs():
         if os.path.exists(repo_dir.abspath):
-            return repo_dir.abspath
+            return repo_dir
 
-    raise StopError(f"Can't find absolute path for {node.name}")
+
+def extract_abs_dir_path(node):
+    abs_dir_node = extract_abs_dir(node)
+    if abs_dir_node is None:
+        raise StopError(f"Can't find absolute path for {node.name}")
+
+    return abs_dir_node.abspath
+
+
+def path_as_posix(path):
+    if SCons.Platform.platform_default() == "win32":
+        return path.replace(os.path.sep, os.path.altsep)
+    return path
diff --git a/scripts/fbt_tools/compilation_db.py b/scripts/fbt_tools/compilation_db.py
new file mode 100644
index 000000000..17ff6aaa3
--- /dev/null
+++ b/scripts/fbt_tools/compilation_db.py
@@ -0,0 +1,278 @@
+"""
+Implements the ability for SCons to emit a compilation database for the MongoDB project. See
+http://clang.llvm.org/docs/JSONCompilationDatabase.html for details on what a compilation
+database is, and why you might want one. The only user visible entry point here is
+'env.CompilationDatabase'. This method takes an optional 'target' to name the file that
+should hold the compilation database, otherwise, the file defaults to compile_commands.json,
+which is the name that most clang tools search for by default.
+"""
+
+# Copyright 2020 MongoDB Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+import json
+import itertools
+import fnmatch
+import SCons
+
+from SCons.Tool.cxx import CXXSuffixes
+from SCons.Tool.cc import CSuffixes
+from SCons.Tool.asm import ASSuffixes, ASPPSuffixes
+
+# TODO: Is there a better way to do this than this global? Right now this exists so that the
+# emitter we add can record all of the things it emits, so that the scanner for the top level
+# compilation database can access the complete list, and also so that the writer has easy
+# access to write all of the files. But it seems clunky. How can the emitter and the scanner
+# communicate more gracefully?
+__COMPILATION_DB_ENTRIES = []
+
+
+# We make no effort to avoid rebuilding the entries. Someday, perhaps we could and even
+# integrate with the cache, but there doesn't seem to be much call for it.
+class __CompilationDbNode(SCons.Node.Python.Value):
+    def __init__(self, value):
+        SCons.Node.Python.Value.__init__(self, value)
+        self.Decider(changed_since_last_build_node)
+
+
+def changed_since_last_build_node(child, target, prev_ni, node):
+    """Dummy decider to force always building"""
+    return True
+
+
+def make_emit_compilation_DB_entry(comstr):
+    """
+    Effectively this creates a lambda function to capture:
+    * command line
+    * source
+    * target
+    :param comstr: unevaluated command line
+    :return: an emitter which has captured the above
+    """
+    user_action = SCons.Action.Action(comstr)
+
+    def emit_compilation_db_entry(target, source, env):
+        """
+        This emitter will be added to each c/c++ object build to capture the info needed
+        for clang tools
+        :param target: target node(s)
+        :param source: source node(s)
+        :param env: Environment for use building this node
+        :return: target(s), source(s)
+        """
+
+        dbtarget = __CompilationDbNode(source)
+
+        entry = env.__COMPILATIONDB_Entry(
+            target=dbtarget,
+            source=[],
+            __COMPILATIONDB_UOUTPUT=target,
+            __COMPILATIONDB_USOURCE=source,
+            __COMPILATIONDB_UACTION=user_action,
+            __COMPILATIONDB_ENV=env,
+        )
+
+        # TODO: Technically, these next two lines should not be required: it should be fine to
+        # cache the entries. However, they don't seem to update properly. Since they are quick
+        # to re-generate disable caching and sidestep this problem.
+        env.AlwaysBuild(entry)
+        env.NoCache(entry)
+
+        __COMPILATION_DB_ENTRIES.append(dbtarget)
+
+        return target, source
+
+    return emit_compilation_db_entry
+
+
+def compilation_db_entry_action(target, source, env, **kw):
+    """
+    Create a dictionary with evaluated command line, target, source
+    and store that info as an attribute on the target
+    (Which has been stored in __COMPILATION_DB_ENTRIES array
+    :param target: target node(s)
+    :param source: source node(s)
+    :param env: Environment for use building this node
+    :param kw:
+    :return: None
+    """
+
+    command = env["__COMPILATIONDB_UACTION"].strfunction(
+        target=env["__COMPILATIONDB_UOUTPUT"],
+        source=env["__COMPILATIONDB_USOURCE"],
+        env=env["__COMPILATIONDB_ENV"],
+    )
+
+    entry = {
+        "directory": env.Dir("#").abspath,
+        "command": command,
+        "file": env["__COMPILATIONDB_USOURCE"][0],
+        "output": env["__COMPILATIONDB_UOUTPUT"][0],
+    }
+
+    target[0].write(entry)
+
+
+def write_compilation_db(target, source, env):
+    entries = []
+
+    use_abspath = env["COMPILATIONDB_USE_ABSPATH"] in [True, 1, "True", "true"]
+    use_path_filter = env.subst("$COMPILATIONDB_PATH_FILTER")
+    use_srcpath_filter = env.subst("$COMPILATIONDB_SRCPATH_FILTER")
+
+    for s in __COMPILATION_DB_ENTRIES:
+        entry = s.read()
+        source_file = entry["file"]
+        output_file = entry["output"]
+
+        if source_file.rfile().srcnode().exists():
+            source_file = source_file.rfile().srcnode()
+
+        if use_abspath:
+            source_file = source_file.abspath
+            output_file = output_file.abspath
+        else:
+            source_file = source_file.path
+            output_file = output_file.path
+
+        # print("output_file, path_filter", output_file, use_path_filter)
+        if use_path_filter and not fnmatch.fnmatch(output_file, use_path_filter):
+            continue
+
+        if use_srcpath_filter and not fnmatch.fnmatch(source_file, use_srcpath_filter):
+            continue
+
+        path_entry = {
+            "directory": entry["directory"],
+            "command": entry["command"],
+            "file": source_file,
+            "output": output_file,
+        }
+
+        entries.append(path_entry)
+
+    with open(target[0].path, "w") as output_file:
+        json.dump(
+            entries, output_file, sort_keys=True, indent=4, separators=(",", ": ")
+        )
+
+
+def scan_compilation_db(node, env, path):
+    return __COMPILATION_DB_ENTRIES
+
+
+def compilation_db_emitter(target, source, env):
+    """fix up the source/targets"""
+
+    # Someone called env.CompilationDatabase('my_targetname.json')
+    if not target and len(source) == 1:
+        target = source
+
+    # Default target name is compilation_db.json
+    if not target:
+        target = [
+            "compile_commands.json",
+        ]
+
+    # No source should have been passed. Drop it.
+    if source:
+        source = []
+
+    return target, source
+
+
+def generate(env, **kwargs):
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    env.SetDefault(
+        COMPILATIONDB_COMSTR=kwargs.get(
+            "COMPILATIONDB_COMSTR", "Building compilation database $TARGET"
+        ),
+        COMPILATIONDB_USE_ABSPATH=False,
+        COMPILATIONDB_PATH_FILTER="",
+        COMPILATIONDB_SRCPATH_FILTER="",
+    )
+
+    components_by_suffix = itertools.chain(
+        itertools.product(
+            CSuffixes,
+            [
+                (static_obj, SCons.Defaults.StaticObjectEmitter, "$CCCOM"),
+                (shared_obj, SCons.Defaults.SharedObjectEmitter, "$SHCCCOM"),
+            ],
+        ),
+        itertools.product(
+            CXXSuffixes,
+            [
+                (static_obj, SCons.Defaults.StaticObjectEmitter, "$CXXCOM"),
+                (shared_obj, SCons.Defaults.SharedObjectEmitter, "$SHCXXCOM"),
+            ],
+        ),
+        itertools.product(
+            ASSuffixes,
+            [(static_obj, SCons.Defaults.StaticObjectEmitter, "$ASCOM")],
+            [(shared_obj, SCons.Defaults.SharedObjectEmitter, "$ASCOM")],
+        ),
+        itertools.product(
+            ASPPSuffixes,
+            [(static_obj, SCons.Defaults.StaticObjectEmitter, "$ASPPCOM")],
+            [(shared_obj, SCons.Defaults.SharedObjectEmitter, "$ASPPCOM")],
+        ),
+    )
+
+    for entry in components_by_suffix:
+        suffix = entry[0]
+        builder, base_emitter, command = entry[1]
+
+        # Assumes a dictionary emitter
+        emitter = builder.emitter.get(suffix, False)
+        if emitter:
+            # We may not have tools installed which initialize all or any of
+            # cxx, cc, or assembly. If not skip resetting the respective emitter.
+            builder.emitter[suffix] = SCons.Builder.ListEmitter(
+                [
+                    emitter,
+                    make_emit_compilation_DB_entry(command),
+                ]
+            )
+
+    env.Append(
+        BUILDERS={
+            "__COMPILATIONDB_Entry": SCons.Builder.Builder(
+                action=SCons.Action.Action(compilation_db_entry_action, None),
+            ),
+            "CompilationDatabase": SCons.Builder.Builder(
+                action=SCons.Action.Action(
+                    write_compilation_db, "$COMPILATIONDB_COMSTR"
+                ),
+                target_scanner=SCons.Scanner.Scanner(
+                    function=scan_compilation_db, node_class=None
+                ),
+                emitter=compilation_db_emitter,
+                suffix="json",
+            ),
+        }
+    )
+
+
+def exists(env):
+    return True
diff --git a/scripts/fbt_tools/fbt_apps.py b/scripts/fbt_tools/fbt_apps.py
index 55e282017..96528f4e5 100644
--- a/scripts/fbt_tools/fbt_apps.py
+++ b/scripts/fbt_tools/fbt_apps.py
@@ -1,7 +1,6 @@
 from SCons.Builder import Builder
 from SCons.Action import Action
 from SCons.Warnings import warn, WarningOnByDefault
-import SCons
 from ansi.color import fg
 
 from fbt.appmanifest import (
@@ -33,14 +32,12 @@ def LoadAppManifest(env, entry):
 
 
 def PrepareApplicationsBuild(env):
-    appbuild = env["APPBUILD"] = env["APPMGR"].filter_apps(env["APPS"])
+    appbuild = env["APPBUILD"] = env["APPMGR"].filter_apps(
+        env["APPS"], env.subst("f${TARGET_HW}")
+    )
     env.Append(
         SDK_HEADERS=appbuild.get_sdk_headers(),
     )
-    env["APPBUILD_DUMP"] = env.Action(
-        DumpApplicationConfig,
-        "\tINFO\t",
-    )
 
 
 def DumpApplicationConfig(target, source, env):
@@ -68,6 +65,10 @@ def generate(env):
     env.AddMethod(PrepareApplicationsBuild)
     env.SetDefault(
         APPMGR=AppManager(),
+        APPBUILD_DUMP=env.Action(
+            DumpApplicationConfig,
+            "\tINFO\t",
+        ),
     )
 
     env.Append(
diff --git a/scripts/fbt_tools/fbt_assets.py b/scripts/fbt_tools/fbt_assets.py
index 521c37e90..e17487358 100644
--- a/scripts/fbt_tools/fbt_assets.py
+++ b/scripts/fbt_tools/fbt_assets.py
@@ -139,7 +139,7 @@ def generate(env):
         BUILDERS={
             "IconBuilder": Builder(
                 action=Action(
-                    '${PYTHON3} "${ASSETS_COMPILER}" icons ${ABSPATHGETTERFUNC(SOURCE)} ${TARGET.dir} --filename ${ICON_FILE_NAME}',
+                    '${PYTHON3} "${ASSETS_COMPILER}" icons "${ABSPATHGETTERFUNC(SOURCE)}" "${TARGET.dir}" --filename ${ICON_FILE_NAME}',
                     "${ICONSCOMSTR}",
                 ),
                 emitter=icons_emitter,
diff --git a/scripts/fbt_tools/fbt_debugopts.py b/scripts/fbt_tools/fbt_debugopts.py
index 0c0ce3d32..9ff05cb73 100644
--- a/scripts/fbt_tools/fbt_debugopts.py
+++ b/scripts/fbt_tools/fbt_debugopts.py
@@ -1,7 +1,6 @@
 from re import search
 
 from SCons.Errors import UserError
-from fbt_options import OPENOCD_OPTS
 
 
 def _get_device_serials(search_str="STLink"):
@@ -20,6 +19,9 @@ def GetDevices(env):
 
 def generate(env, **kw):
     env.AddMethod(GetDevices)
+    env.SetDefault(
+        FBT_DEBUG_DIR="${ROOT_DIR}/debug",
+    )
 
     if (adapter_serial := env.subst("$OPENOCD_ADAPTER_SERIAL")) != "auto":
         env.Append(
@@ -36,15 +38,15 @@ def generate(env, **kw):
 
     env.SetDefault(
         OPENOCD_GDB_PIPE=[
-            "|openocd -c 'gdb_port pipe; log_output debug/openocd.log' ${[SINGLEQUOTEFUNC(OPENOCD_OPTS)]}"
+            "|openocd -c 'gdb_port pipe; log_output ${FBT_DEBUG_DIR}/openocd.log' ${[SINGLEQUOTEFUNC(OPENOCD_OPTS)]}"
         ],
         GDBOPTS_BASE=[
+            "-ex",
+            "set pagination off",
             "-ex",
             "target extended-remote ${GDBREMOTE}",
             "-ex",
             "set confirm off",
-            "-ex",
-            "set pagination off",
         ],
         GDBOPTS_BLACKMAGIC=[
             "-ex",
@@ -58,17 +60,19 @@ def generate(env, **kw):
         ],
         GDBPYOPTS=[
             "-ex",
-            "source debug/FreeRTOS/FreeRTOS.py",
+            "source ${FBT_DEBUG_DIR}/FreeRTOS/FreeRTOS.py",
             "-ex",
-            "source debug/flipperapps.py",
+            "source ${FBT_DEBUG_DIR}/flipperapps.py",
             "-ex",
-            "source debug/PyCortexMDebug/PyCortexMDebug.py",
+            "fap-set-debug-elf-root ${FBT_FAP_DEBUG_ELF_ROOT}",
+            "-ex",
+            "source ${FBT_DEBUG_DIR}/PyCortexMDebug/PyCortexMDebug.py",
             "-ex",
             "svd_load ${SVD_FILE}",
             "-ex",
             "compare-sections",
         ],
-        JFLASHPROJECT="${ROOT_DIR.abspath}/debug/fw.jflash",
+        JFLASHPROJECT="${FBT_DEBUG_DIR}/fw.jflash",
     )
 
 
diff --git a/scripts/fbt_tools/fbt_dist.py b/scripts/fbt_tools/fbt_dist.py
index fb59e5b95..f0b443486 100644
--- a/scripts/fbt_tools/fbt_dist.py
+++ b/scripts/fbt_tools/fbt_dist.py
@@ -22,7 +22,7 @@ def GetProjetDirName(env, project=None):
 
 def create_fw_build_targets(env, configuration_name):
     flavor = GetProjetDirName(env, configuration_name)
-    build_dir = env.Dir("build").Dir(flavor).abspath
+    build_dir = env.Dir("build").Dir(flavor)
     return env.SConscript(
         "firmware.scons",
         variant_dir=build_dir,
@@ -131,7 +131,7 @@ def generate(env):
             "UsbInstall": Builder(
                 action=[
                     Action(
-                        '${PYTHON3} "${SELFUPDATE_SCRIPT}" dist/${DIST_DIR}/f${TARGET_HW}-update-${DIST_SUFFIX}/update.fuf'
+                        '${PYTHON3} "${SELFUPDATE_SCRIPT}" ${UPDATE_BUNDLE_DIR}/update.fuf'
                     ),
                     Touch("${TARGET}"),
                 ]
diff --git a/scripts/fbt_tools/fbt_extapps.py b/scripts/fbt_tools/fbt_extapps.py
index fb4dc2f16..a4116e513 100644
--- a/scripts/fbt_tools/fbt_extapps.py
+++ b/scripts/fbt_tools/fbt_extapps.py
@@ -1,6 +1,9 @@
+from dataclasses import dataclass, field
+from typing import Optional
 from SCons.Builder import Builder
 from SCons.Action import Action
 from SCons.Errors import UserError
+from SCons.Node import NodeList
 import SCons.Warnings
 
 from fbt.elfmanifest import assemble_manifest_data
@@ -16,6 +19,15 @@ import shutil
 from ansi.color import fg
 
 
+@dataclass
+class FlipperExternalAppInfo:
+    app: FlipperApplication
+    compact: NodeList = field(default_factory=NodeList)
+    debug: NodeList = field(default_factory=NodeList)
+    validator: NodeList = field(default_factory=NodeList)
+    installer: NodeList = field(default_factory=NodeList)
+
+
 def BuildAppElf(env, app):
     ext_apps_work_dir = env.subst("$EXT_APPS_WORK_DIR")
     app_work_dir = os.path.join(ext_apps_work_dir, app.appid)
@@ -26,15 +38,7 @@ def BuildAppElf(env, app):
 
     app_alias = f"fap_{app.appid}"
 
-    # Deprecation stub
-    legacy_app_taget_name = f"{app_env['FIRMWARE_BUILD_CFG']}_{app.appid}"
-
-    def legacy_app_build_stub(**kw):
-        raise UserError(
-            f"Target name '{legacy_app_taget_name}' is deprecated, use '{app_alias}' instead"
-        )
-
-    app_env.PhonyTarget(legacy_app_taget_name, Action(legacy_app_build_stub, None))
+    app_artifacts = FlipperExternalAppInfo(app)
 
     externally_built_files = []
     if app.fap_extbuild:
@@ -53,11 +57,12 @@ def BuildAppElf(env, app):
             )
 
     if app.fap_icon_assets:
-        app_env.CompileIcons(
+        fap_icons = app_env.CompileIcons(
             app_env.Dir(app_work_dir),
             app._appdir.Dir(app.fap_icon_assets),
             icon_bundle_name=f"{app.appid}_icons",
         )
+        app_env.Alias("_fap_icons", fap_icons)
 
     private_libs = []
 
@@ -115,20 +120,22 @@ def BuildAppElf(env, app):
         CPPPATH=env.Dir(app_work_dir),
     )
 
-    app_elf_raw = app_env.Program(
+    app_artifacts.debug = app_env.Program(
         os.path.join(ext_apps_work_dir, f"{app.appid}_d"),
         app_sources,
         APP_ENTRY=app.entry_point,
     )
 
-    app_env.Clean(app_elf_raw, [*externally_built_files, app_env.Dir(app_work_dir)])
+    app_env.Clean(
+        app_artifacts.debug, [*externally_built_files, app_env.Dir(app_work_dir)]
+    )
 
-    app_elf_dump = app_env.ObjDump(app_elf_raw)
+    app_elf_dump = app_env.ObjDump(app_artifacts.debug)
     app_env.Alias(f"{app_alias}_list", app_elf_dump)
 
-    app_elf_augmented = app_env.EmbedAppMetadata(
+    app_artifacts.compact = app_env.EmbedAppMetadata(
         os.path.join(ext_apps_work_dir, app.appid),
-        app_elf_raw,
+        app_artifacts.debug,
         APP=app,
     )
 
@@ -139,19 +146,21 @@ def BuildAppElf(env, app):
     }
 
     app_env.Depends(
-        app_elf_augmented,
+        app_artifacts.compact,
         [app_env["SDK_DEFINITION"], app_env.Value(manifest_vals)],
     )
     if app.fap_icon:
         app_env.Depends(
-            app_elf_augmented,
+            app_artifacts.compact,
             app_env.File(f"{app._apppath}/{app.fap_icon}"),
         )
 
-    app_elf_import_validator = app_env.ValidateAppImports(app_elf_augmented)
-    app_env.AlwaysBuild(app_elf_import_validator)
-    app_env.Alias(app_alias, app_elf_import_validator)
-    return (app_elf_augmented, app_elf_raw, app_elf_import_validator)
+    app_artifacts.validator = app_env.ValidateAppImports(app_artifacts.compact)
+    app_env.AlwaysBuild(app_artifacts.validator)
+    app_env.Alias(app_alias, app_artifacts.validator)
+
+    env["EXT_APPS"][app.appid] = app_artifacts
+    return app_artifacts
 
 
 def prepare_app_metadata(target, source, env):
@@ -182,11 +191,17 @@ def validate_app_imports(target, source, env):
             app_syms.add(line.split()[0])
     unresolved_syms = app_syms - sdk_cache.get_valid_names()
     if unresolved_syms:
-        SCons.Warnings.warn(
-            SCons.Warnings.LinkWarning,
-            fg.brightyellow(f"{source[0].path}: app won't run. Unresolved symbols: ")
-            + fg.brightmagenta(f"{unresolved_syms}"),
-        )
+        warning_msg = fg.brightyellow(
+            f"{source[0].path}: app won't run. Unresolved symbols: "
+        ) + fg.brightmagenta(f"{unresolved_syms}")
+        disabled_api_syms = unresolved_syms.intersection(sdk_cache.get_disabled_names())
+        if disabled_api_syms:
+            warning_msg += (
+                fg.brightyellow(" (in API, but disabled: ")
+                + fg.brightmagenta(f"{disabled_api_syms}")
+                + fg.brightyellow(")")
+            )
+        SCons.Warnings.warn(SCons.Warnings.LinkWarning, warning_msg),
 
 
 def GetExtAppFromPath(env, app_dir):
@@ -208,26 +223,26 @@ def GetExtAppFromPath(env, app_dir):
     if not app:
         raise UserError(f"Failed to resolve application for given APPSRC={app_dir}")
 
-    app_elf = env["_extapps"]["compact"].get(app.appid, None)
-    if not app_elf:
+    app_artifacts = env["EXT_APPS"].get(app.appid, None)
+    if not app_artifacts:
         raise UserError(
             f"Application {app.appid} is not configured for building as external"
         )
 
-    app_validator = env["_extapps"]["validators"].get(app.appid, None)
-
-    return (app, app_elf[0], app_validator[0])
+    return app_artifacts
 
 
 def fap_dist_emitter(target, source, env):
     target_dir = target[0]
 
     target = []
-    for dist_entry in env["_extapps"]["dist"].values():
-        target.append(target_dir.Dir(dist_entry[0]).File(dist_entry[1][0].name))
-
-    for compact_entry in env["_extapps"]["compact"].values():
-        source.extend(compact_entry)
+    for _, app_artifacts in env["EXT_APPS"].items():
+        source.extend(app_artifacts.compact)
+        target.append(
+            target_dir.Dir(app_artifacts.app.fap_category).File(
+                app_artifacts.compact[0].name
+            )
+        )
 
     return (target, source)
 
@@ -244,10 +259,9 @@ def fap_dist_action(target, source, env):
 
 def generate(env, **kw):
     env.SetDefault(
-        EXT_APPS_WORK_DIR=kw.get("EXT_APPS_WORK_DIR"),
+        EXT_APPS_WORK_DIR="${FBT_FAP_DEBUG_ELF_ROOT}",
         APP_RUN_SCRIPT="${FBT_SCRIPT_DIR}/runfap.py",
     )
-
     if not env["VERBOSE"]:
         env.SetDefault(
             FAPDISTCOMSTR="\tFAPDIST\t${TARGET}",
@@ -256,6 +270,10 @@ def generate(env, **kw):
             APPCHECK_COMSTR="\tAPPCHK\t${SOURCE}",
         )
 
+    env.SetDefault(
+        EXT_APPS={},  # appid -> FlipperExternalAppInfo
+    )
+
     env.AddMethod(BuildAppElf)
     env.AddMethod(GetExtAppFromPath)
     env.Append(
diff --git a/scripts/fbt_tools/fbt_sdk.py b/scripts/fbt_tools/fbt_sdk.py
index c46346b65..3a37eacc9 100644
--- a/scripts/fbt_tools/fbt_sdk.py
+++ b/scripts/fbt_tools/fbt_sdk.py
@@ -14,6 +14,7 @@ import json
 
 from fbt.sdk.collector import SdkCollector
 from fbt.sdk.cache import SdkCache
+from fbt.util import path_as_posix
 
 
 def ProcessSdkDepends(env, filename):
@@ -52,6 +53,8 @@ def prebuild_sdk_create_origin_file(target, source, env):
 
 
 class SdkMeta:
+    MAP_FILE_SUBST = "SDK_MAP_FILE_SUBST"
+
     def __init__(self, env, tree_builder: "SdkTreeBuilder"):
         self.env = env
         self.treebuilder = tree_builder
@@ -67,6 +70,7 @@ class SdkMeta:
             "linker_libs": self.env.subst("${LIBS}"),
             "app_ep_subst": self.env.subst("${APP_ENTRY}"),
             "sdk_path_subst": self.env.subst("${SDK_DIR_SUBST}"),
+            "map_file_subst": self.MAP_FILE_SUBST,
             "hardware": self.env.subst("${TARGET_HW}"),
         }
         with open(json_manifest_path, "wt") as f:
@@ -75,9 +79,9 @@ class SdkMeta:
     def _wrap_scons_vars(self, vars: str):
         expanded_vars = self.env.subst(
             vars,
-            target=Entry("dummy"),
+            target=Entry(self.MAP_FILE_SUBST),
         )
-        return expanded_vars.replace("\\", "/")
+        return path_as_posix(expanded_vars)
 
 
 class SdkTreeBuilder:
@@ -142,13 +146,15 @@ class SdkTreeBuilder:
         meta.save_to(self.target[0].path)
 
     def build_sdk_file_path(self, orig_path: str) -> str:
-        return posixpath.normpath(
-            posixpath.join(
-                self.SDK_DIR_SUBST,
-                self.target_sdk_dir_name,
-                orig_path,
+        return path_as_posix(
+            posixpath.normpath(
+                posixpath.join(
+                    self.SDK_DIR_SUBST,
+                    self.target_sdk_dir_name,
+                    orig_path,
+                )
             )
-        ).replace("\\", "/")
+        )
 
     def emitter(self, target, source, env):
         target_folder = target[0]
diff --git a/scripts/lint.py b/scripts/lint.py
index c178c8763..58f2d69f5 100755
--- a/scripts/lint.py
+++ b/scripts/lint.py
@@ -35,11 +35,23 @@ class Main(App):
         )
         self.parser_format.set_defaults(func=self.format)
 
+    @staticmethod
+    def _filter_lint_directories(dirnames: list[str]):
+        # Skipping 3rd-party code - usually resides in subfolder "lib"
+        if "lib" in dirnames:
+            dirnames.remove("lib")
+        # Skipping hidden folders
+        for dirname in dirnames.copy():
+            if dirname.startswith("."):
+                dirnames.remove(dirname)
+
     def _check_folders(self, folders: list):
         show_message = False
         pattern = re.compile(SOURCE_CODE_DIR_PATTERN)
         for folder in folders:
             for dirpath, dirnames, filenames in os.walk(folder):
+                self._filter_lint_directories(dirnames)
+
                 for dirname in dirnames:
                     if not pattern.match(dirname):
                         to_fix = os.path.join(dirpath, dirname)
@@ -54,9 +66,7 @@ class Main(App):
         output = []
         for folder in folders:
             for dirpath, dirnames, filenames in os.walk(folder):
-                # Skipping 3rd-party code - usually resides in subfolder "lib"
-                if "lib" in dirnames:
-                    dirnames.remove("lib")
+                self._filter_lint_directories(dirnames)
 
                 for filename in filenames:
                     ext = os.path.splitext(filename.lower())[1]
diff --git a/scripts/requirements.txt b/scripts/requirements.txt
index 35cac7742..5b6fac5f7 100644
--- a/scripts/requirements.txt
+++ b/scripts/requirements.txt
@@ -1,7 +1,9 @@
-pyserial==3.5
+ansi==0.3.6
+black==22.6.0
+colorlog==6.7.0
 heatshrink2==0.11.0
 Pillow==9.1.1
-grpcio==1.47.0
-grpcio-tools==1.47.0
-protobuf==3.20.2
+protobuf==3.20.1
+pyserial==3.5
 python3-protobuf==2.5.0
+SCons==4.4.0
diff --git a/scripts/toolchain/fbtenv.cmd b/scripts/toolchain/fbtenv.cmd
index 6e87bf95a..9fbd8fd9b 100644
--- a/scripts/toolchain/fbtenv.cmd
+++ b/scripts/toolchain/fbtenv.cmd
@@ -1,37 +1,39 @@
 @echo off
 
-if not [%FBT_ROOT%] == [] (
+if not ["%FBT_ROOT%"] == [""] (
     goto already_set
 )
 
 set "FBT_ROOT=%~dp0\..\..\"
-pushd %FBT_ROOT%
+pushd "%FBT_ROOT%"
 set "FBT_ROOT=%cd%"
 popd
 
-if not [%FBT_NOENV%] == [] (
+if not ["%FBT_NOENV%"] == [""] (
     exit /b 0
 )
 
-set "FLIPPER_TOOLCHAIN_VERSION=17"
+set "FLIPPER_TOOLCHAIN_VERSION=19"
 
-if [%FBT_TOOLCHAIN_ROOT%] == [] (
+if ["%FBT_TOOLCHAIN_ROOT%"] == [""] (
     set "FBT_TOOLCHAIN_ROOT=%FBT_ROOT%\toolchain\x86_64-windows"
 )
 
+set "FBT_TOOLCHAIN_VERSION_FILE=%FBT_TOOLCHAIN_ROOT%\VERSION"
+
 if not exist "%FBT_TOOLCHAIN_ROOT%" (
-    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" "%flipper_toolchain_version%" "%FBT_TOOLCHAIN_ROOT%"
-)
-if not exist "%FBT_TOOLCHAIN_ROOT%\VERSION" (
-    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" "%flipper_toolchain_version%" "%FBT_TOOLCHAIN_ROOT%"
+    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" %flipper_toolchain_version% "%FBT_TOOLCHAIN_ROOT%"
 )
 
-set /p REAL_TOOLCHAIN_VERSION=<"%FBT_TOOLCHAIN_ROOT%\VERSION"
+if not exist "%FBT_TOOLCHAIN_VERSION_FILE%" (
+    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" %flipper_toolchain_version% "%FBT_TOOLCHAIN_ROOT%"
+)
+
+set /p REAL_TOOLCHAIN_VERSION=<"%FBT_TOOLCHAIN_VERSION_FILE%"
 if not "%REAL_TOOLCHAIN_VERSION%" == "%FLIPPER_TOOLCHAIN_VERSION%" (
-    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" "%flipper_toolchain_version%" "%FBT_TOOLCHAIN_ROOT%"
+    powershell -ExecutionPolicy Bypass -File "%FBT_ROOT%\scripts\toolchain\windows-toolchain-download.ps1" %flipper_toolchain_version% "%FBT_TOOLCHAIN_ROOT%"
 )
 
-
 set "HOME=%USERPROFILE%"
 set "PYTHONHOME=%FBT_TOOLCHAIN_ROOT%\python"
 set "PYTHONPATH="
diff --git a/scripts/toolchain/fbtenv.sh b/scripts/toolchain/fbtenv.sh
index d3fdb8cea..852e00394 100755
--- a/scripts/toolchain/fbtenv.sh
+++ b/scripts/toolchain/fbtenv.sh
@@ -5,7 +5,7 @@
 # public variables
 DEFAULT_SCRIPT_PATH="$(pwd -P)";
 SCRIPT_PATH="${SCRIPT_PATH:-$DEFAULT_SCRIPT_PATH}";
-FBT_TOOLCHAIN_VERSION="${FBT_TOOLCHAIN_VERSION:-"17"}";
+FBT_TOOLCHAIN_VERSION="${FBT_TOOLCHAIN_VERSION:-"19"}";
 FBT_TOOLCHAIN_PATH="${FBT_TOOLCHAIN_PATH:-$SCRIPT_PATH}";
 
 fbtenv_show_usage()
diff --git a/site_scons/commandline.scons b/site_scons/commandline.scons
index cadb417f8..6087c1c7a 100644
--- a/site_scons/commandline.scons
+++ b/site_scons/commandline.scons
@@ -63,6 +63,11 @@ vars.AddVariables(
         help="Enable debug build",
         default=True,
     ),
+    BoolVariable(
+        "LIB_DEBUG",
+        help="Enable debug build for libraries",
+        default=False,
+    ),
     BoolVariable(
         "COMPACT",
         help="Optimize for size",
@@ -147,7 +152,7 @@ vars.AddVariables(
     PathVariable(
         "SVD_FILE",
         help="Path to SVD file",
-        validator=PathVariable.PathIsFile,
+        validator=PathVariable.PathAccept,
         default="",
     ),
     PathVariable(
diff --git a/site_scons/environ.scons b/site_scons/environ.scons
index 96424caad..acdc83e2a 100644
--- a/site_scons/environ.scons
+++ b/site_scons/environ.scons
@@ -61,8 +61,8 @@ coreenv = VAR_ENV.Clone(
     ABSPATHGETTERFUNC=extract_abs_dir_path,
     # Setting up temp file parameters - to overcome command line length limits
     TEMPFILEARGESCFUNC=tempfile_arg_esc_func,
-    FBT_SCRIPT_DIR=Dir("#/scripts"),
     ROOT_DIR=Dir("#"),
+    FBT_SCRIPT_DIR="${ROOT_DIR}/scripts",
 )
 
 # If DIST_SUFFIX is set in environment, is has precedence (set by CI)
diff --git a/site_scons/extapps.scons b/site_scons/extapps.scons
index bb1d65ffc..b8f210563 100644
--- a/site_scons/extapps.scons
+++ b/site_scons/extapps.scons
@@ -1,4 +1,6 @@
-from SCons.Errors import UserError
+from dataclasses import dataclass, field
+from SCons.Node import NodeList
+from SCons.Warnings import warn, WarningOnByDefault
 
 
 Import("ENV")
@@ -7,14 +9,7 @@ from fbt.appmanifest import FlipperAppType
 
 appenv = ENV["APPENV"] = ENV.Clone(
     tools=[
-        (
-            "fbt_extapps",
-            {
-                "EXT_APPS_WORK_DIR": ENV.subst(
-                    "${BUILD_DIR}/.extapps",
-                )
-            },
-        ),
+        "fbt_extapps",
         "fbt_assets",
         "fbt_sdk",
     ]
@@ -60,22 +55,11 @@ appenv.AppendUnique(
 )
 
 
-extapps = appenv["_extapps"] = {
-    "compact": {},
-    "debug": {},
-    "validators": {},
-    "dist": {},
-    "resources_dist": None,
-    "sdk_tree": None,
-}
-
-
-def build_app_as_external(env, appdef):
-    compact_elf, debug_elf, validator = env.BuildAppElf(appdef)
-    extapps["compact"][appdef.appid] = compact_elf
-    extapps["debug"][appdef.appid] = debug_elf
-    extapps["validators"][appdef.appid] = validator
-    extapps["dist"][appdef.appid] = (appdef.fap_category, compact_elf)
+@dataclass
+class FlipperExtAppBuildArtifacts:
+    applications: dict = field(default_factory=dict)
+    resources_dist: NodeList = field(default_factory=NodeList)
+    sdk_tree: NodeList = field(default_factory=NodeList)
 
 
 apps_to_build_as_faps = [
@@ -85,42 +69,51 @@ apps_to_build_as_faps = [
 if appenv["DEBUG_TOOLS"]:
     apps_to_build_as_faps.append(FlipperAppType.DEBUG)
 
-for apptype in apps_to_build_as_faps:
-    for app in appenv["APPBUILD"].get_apps_of_type(apptype, True):
-        build_app_as_external(appenv, app)
+known_extapps = [
+    app
+    for apptype in apps_to_build_as_faps
+    for app in appenv["APPBUILD"].get_apps_of_type(apptype, True)
+]
 
 # Ugly access to global option
 if extra_app_list := GetOption("extra_ext_apps"):
-    for extra_app in extra_app_list.split(","):
-        build_app_as_external(appenv, appenv["APPMGR"].get(extra_app))
+    known_extapps.extend(map(appenv["APPMGR"].get, extra_app_list.split(",")))
+
+for app in known_extapps:
+    if not any(map(lambda t: t in app.targets, ["all", appenv.subst("f${TARGET_HW}")])):
+        warn(
+            WarningOnByDefault,
+            f"Can't build '{app.name}' (id '{app.appid}'): target mismatch"
+            f" (building for {appenv.subst('f${TARGET_HW}')}, app supports {app.targets}",
+        )
+        continue
+
+    appenv.BuildAppElf(app)
 
 
 if appenv["FORCE"]:
-    appenv.AlwaysBuild(extapps["compact"].values())
+    appenv.AlwaysBuild(
+        list(app_artifact.compact for app_artifact in appenv["EXT_APPS"].values())
+    )
 
 
-# Deprecation stub
-def legacy_app_build_stub(**kw):
-    raise UserError(f"Target name 'firmware_extapps' is deprecated, use 'faps' instead")
+Alias(
+    "faps", list(app_artifact.validator for app_artifact in appenv["EXT_APPS"].values())
+)
 
-
-appenv.PhonyTarget("firmware_extapps", appenv.Action(legacy_app_build_stub, None))
-
-
-Alias("faps", extapps["compact"].values())
-Alias("faps", extapps["validators"].values())
-
-extapps["resources_dist"] = appenv.FapDist(appenv.Dir("#/assets/resources/apps"), [])
+extapps = FlipperExtAppBuildArtifacts()
+extapps.applications = appenv["EXT_APPS"]
+extapps.resources_dist = appenv.FapDist(appenv.Dir("#/assets/resources/apps"), [])
 
 if appsrc := appenv.subst("$APPSRC"):
-    app_manifest, fap_file, app_validator = appenv.GetExtAppFromPath(appsrc)
+    app_artifacts = appenv.GetExtAppFromPath(appsrc)
     appenv.PhonyTarget(
         "launch_app",
-        '${PYTHON3} "${APP_RUN_SCRIPT}" ${SOURCE} --fap_dst_dir "/ext/apps/${FAP_CATEGORY}"',
-        source=fap_file,
-        FAP_CATEGORY=app_manifest.fap_category,
+        '${PYTHON3} "${APP_RUN_SCRIPT}" "${SOURCE}" --fap_dst_dir "/ext/apps/${FAP_CATEGORY}"',
+        source=app_artifacts.compact,
+        FAP_CATEGORY=app_artifacts.app.fap_category,
     )
-    appenv.Alias("launch_app", app_validator)
+    appenv.Alias("launch_app", app_artifacts.validator)
 
 # SDK management
 
@@ -131,12 +124,14 @@ sdk_source = appenv.SDKPrebuilder(
     (appenv["SDK_HEADERS"], appenv["FW_ASSETS_HEADERS"]),
 )
 # Extra deps on headers included in deeper levels
+# Available on second and subsequent builds
 Depends(sdk_source, appenv.ProcessSdkDepends(f"{sdk_origin_path}.d"))
 
 appenv["SDK_DIR"] = appenv.Dir("${BUILD_DIR}/sdk")
-sdk_tree = extapps["sdk_tree"] = appenv.SDKTree(appenv["SDK_DIR"], sdk_origin_path)
+sdk_tree = appenv.SDKTree(appenv["SDK_DIR"], sdk_origin_path)
 # AlwaysBuild(sdk_tree)
 Alias("sdk_tree", sdk_tree)
+extapps.sdk_tree = sdk_tree
 
 sdk_apicheck = appenv.SDKSymUpdater(appenv["SDK_DEFINITION"], sdk_origin_path)
 Precious(sdk_apicheck)