diff --git a/applications/external/pacs_fuzzer/application.fam b/applications/external/pacs_fuzzer/application.fam
index 6b6b2ab36..8e67af6d4 100644
--- a/applications/external/pacs_fuzzer/application.fam
+++ b/applications/external/pacs_fuzzer/application.fam
@@ -2,7 +2,7 @@ App(
     appid="pacs_fuzzer",
     name="Fuzzer Gui",
     apptype=FlipperAppType.EXTERNAL,
-    entry_point="fuzzer_start",
+    entry_point="fuzzer_start_ibtn",
     requires=[
         "gui", 
         "storage",
@@ -28,7 +28,7 @@ App(
     appid="pacs_rfid_fuzzer",
     name="Fuzzer Gui rfid",
     apptype=FlipperAppType.EXTERNAL,
-    entry_point="fuzzer_start",
+    entry_point="fuzzer_start_rfid",
     requires=[
         "gui", 
         "storage",
diff --git a/applications/external/pacs_fuzzer/fuzzer.c b/applications/external/pacs_fuzzer/fuzzer.c
index 5a6a4c9b6..b6b66fb18 100644
--- a/applications/external/pacs_fuzzer/fuzzer.c
+++ b/applications/external/pacs_fuzzer/fuzzer.c
@@ -27,9 +27,14 @@ PacsFuzzerApp* fuzzer_app_alloc() {
 
     app->worker = fuzzer_worker_alloc();
 
+    app->file_path = furi_string_alloc();
+
     // GUI
     app->gui = furi_record_open(RECORD_GUI);
 
+    // Dialog
+    app->dialogs = furi_record_open(RECORD_DIALOGS);
+
     // View Dispatcher
     app->view_dispatcher = view_dispatcher_alloc();
 
@@ -75,18 +80,49 @@ void fuzzer_app_free(PacsFuzzerApp* app) {
     scene_manager_free(app->scene_manager);
     view_dispatcher_free(app->view_dispatcher);
 
+    // Dialog
+    furi_record_close(RECORD_DIALOGS);
+
     // Close records
     furi_record_close(RECORD_GUI);
 
+    furi_string_free(app->file_path);
+
     fuzzer_worker_free(app->worker);
 
     free(app);
 }
 
-int32_t fuzzer_start(void* p) {
+int32_t fuzzer_start_ibtn(void* p) {
     UNUSED(p);
     PacsFuzzerApp* fuzzer_app = fuzzer_app_alloc();
 
+    FuzzerConsts app_const = {
+        .custom_dict_folder = "/ext/ibtnfuzzer",
+        .custom_dict_extension = ".txt",
+        .key_extension = ".ibtn",
+        .path_key_folder = "/ext/ibutton",
+    };
+    fuzzer_app->fuzzer_const = &app_const;
+
+    view_dispatcher_run(fuzzer_app->view_dispatcher);
+
+    fuzzer_app_free(fuzzer_app);
+    return 0;
+}
+
+int32_t fuzzer_start_rfid(void* p) {
+    UNUSED(p);
+    PacsFuzzerApp* fuzzer_app = fuzzer_app_alloc();
+
+    FuzzerConsts app_const = {
+        .custom_dict_folder = "/ext/rfidfuzzer",
+        .custom_dict_extension = ".txt",
+        .key_extension = ".rfid",
+        .path_key_folder = "/ext/lfrfid",
+    };
+    fuzzer_app->fuzzer_const = &app_const;
+
     view_dispatcher_run(fuzzer_app->view_dispatcher);
 
     fuzzer_app_free(fuzzer_app);
diff --git a/applications/external/pacs_fuzzer/fuzzer_i.h b/applications/external/pacs_fuzzer/fuzzer_i.h
index bc31a137c..b56becd8f 100644
--- a/applications/external/pacs_fuzzer/fuzzer_i.h
+++ b/applications/external/pacs_fuzzer/fuzzer_i.h
@@ -1,9 +1,13 @@
 #pragma once
 
+#include <furi.h>
+#include <furi_hal.h>
+
 #include <stdint.h>
 #include <gui/gui.h>
 #include <gui/view_dispatcher.h>
 #include <gui/scene_manager.h>
+#include <dialogs/dialogs.h>
 
 #include "scenes/fuzzer_scene.h"
 #include "views/main_menu.h"
@@ -13,16 +17,31 @@
 #include "lib/worker/fake_worker.h"
 
 #include <flipper_format/flipper_format_i.h>
+#include "fuzzer_icons.h"
+
+#define FUZZ_TIME_DELAY_MIN (5)
+#define FUZZ_TIME_DELAY_MAX (80)
+
+typedef struct {
+    const char* custom_dict_extension;
+    const char* custom_dict_folder;
+    const char* key_extension;
+    const char* path_key_folder;
+} FuzzerConsts;
 
 typedef struct {
     Gui* gui;
     ViewDispatcher* view_dispatcher;
     SceneManager* scene_manager;
 
+    DialogsApp* dialogs;
     FuzzerViewMain* main_view;
     FuzzerViewAttack* attack_view;
 
+    FuriString* file_path;
+
     FuzzerState fuzzer_state;
+    FuzzerConsts* fuzzer_const;
 
     FuzzerWorker* worker;
 } PacsFuzzerApp;
\ No newline at end of file
diff --git a/applications/external/pacs_fuzzer/lib/worker/fake_worker.c b/applications/external/pacs_fuzzer/lib/worker/fake_worker.c
index 6da2becbc..ff74f29e1 100644
--- a/applications/external/pacs_fuzzer/lib/worker/fake_worker.c
+++ b/applications/external/pacs_fuzzer/lib/worker/fake_worker.c
@@ -1,25 +1,28 @@
 #include "fake_worker.h"
 
-#include <furi.h>
 #include <timer.h>
 
-#if defined(RFID_125_PROTOCOL)
+#include <lib/toolbox/hex.h>
+#include <toolbox/stream/stream.h>
+#include <toolbox/stream/buffered_file_stream.h>
 
-#else
-
-#endif
+#define TAG "Fuzzer worker"
+#define FUZZ_TIME_DELAY_DEFAULT (10)
 
 #if defined(RFID_125_PROTOCOL)
 
+#define MAX_PAYLOAD_SIZE 6
 #include <lib/lfrfid/lfrfid_worker.h>
 #include <lfrfid/protocols/lfrfid_protocols.h>
 
 #else
 
+#define MAX_PAYLOAD_SIZE 8
 #include <lib/ibutton/ibutton_worker.h>
 #include <lib/ibutton/ibutton_key.h>
 
 #endif
+
 #include <toolbox/stream/stream.h>
 
 struct FuzzerWorker {
@@ -74,6 +77,42 @@ static bool fuzzer_worker_load_key(FuzzerWorker* worker, bool next) {
         }
         break;
 
+    case FuzzerWorkerAttackTypeLoadFileCustomUids: {
+        uint8_t str_len = protocol->data_size * 2 + 1;
+        FuriString* data_str = furi_string_alloc();
+        while(true) {
+            furi_string_reset(data_str);
+            if(!stream_read_line(worker->uids_stream, data_str)) {
+                stream_rewind(worker->uids_stream);
+                // TODO Check empty file & close stream and storage
+                break;
+            } else if(furi_string_get_char(data_str, 0) == '#') {
+                // Skip comment string
+                continue;
+            } else if(furi_string_size(data_str) != str_len) {
+                // Ignore strin with bad length
+                FURI_LOG_W(TAG, "Bad string length");
+                continue;
+            } else {
+                FURI_LOG_D(TAG, "Uid candidate: \"%s\"", furi_string_get_cstr(data_str));
+                bool parse_ok = true;
+                for(uint8_t i = 0; i < protocol->data_size; i++) {
+                    if(!hex_char_to_uint8(
+                           furi_string_get_cstr(data_str)[i * 2],
+                           furi_string_get_cstr(data_str)[i * 2 + 1],
+                           &worker->payload[i])) {
+                        parse_ok = false;
+                        break;
+                    }
+                }
+                res = parse_ok;
+            }
+            break;
+        }
+    }
+
+    break;
+
     default:
         break;
     }
@@ -134,20 +173,71 @@ void fuzzer_worker_get_current_key(FuzzerWorker* worker, uint8_t* key) {
 bool fuzzer_worker_attack_dict(FuzzerWorker* worker, FuzzerProtos protocol_index) {
     furi_assert(worker);
 
+    bool res = false;
+
     worker->protocol = &fuzzer_proto_items[protocol_index];
-    // TODO iButtonProtocolIdInvalid check
 
 #if defined(RFID_125_PROTOCOL)
     worker->protocol_id =
         protocol_dict_get_protocol_by_name(worker->protocols_items, worker->protocol->name);
 #else
+    // TODO iButtonProtocolIdInvalid check
     worker->protocol_id =
         ibutton_protocols_get_id_by_name(worker->protocols_items, worker->protocol->name);
 #endif
     worker->attack_type = FuzzerWorkerAttackTypeDefaultDict;
     worker->index = 0;
 
-    return fuzzer_worker_load_key(worker, false);
+    if(!fuzzer_worker_load_key(worker, false)) {
+        worker->attack_type = FuzzerWorkerAttackTypeMax;
+    } else {
+        res = true;
+    }
+
+    return res;
+}
+
+bool fuzzer_worker_attack_file_dict(
+    FuzzerWorker* worker,
+    FuzzerProtos protocol_index,
+    FuriString* file_path) {
+    furi_assert(worker);
+    furi_assert(file_path);
+
+    bool res = false;
+
+    worker->protocol = &fuzzer_proto_items[protocol_index];
+
+#if defined(RFID_125_PROTOCOL)
+    worker->protocol_id =
+        protocol_dict_get_protocol_by_name(worker->protocols_items, worker->protocol->name);
+#else
+    // TODO iButtonProtocolIdInvalid check
+    worker->protocol_id =
+        ibutton_protocols_get_id_by_name(worker->protocols_items, worker->protocol->name);
+#endif
+
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    worker->uids_stream = buffered_file_stream_alloc(storage);
+
+    if(!buffered_file_stream_open(
+           worker->uids_stream, furi_string_get_cstr(file_path), FSAM_READ, FSOM_OPEN_EXISTING)) {
+        buffered_file_stream_close(worker->uids_stream);
+        return res;
+    }
+
+    worker->attack_type = FuzzerWorkerAttackTypeLoadFileCustomUids;
+    worker->index = 0;
+
+    if(!fuzzer_worker_load_key(worker, false)) {
+        worker->attack_type = FuzzerWorkerAttackTypeMax;
+        buffered_file_stream_close(worker->uids_stream);
+        furi_record_close(RECORD_STORAGE);
+    } else {
+        res = true;
+    }
+
+    return res;
 }
 
 FuzzerWorker* fuzzer_worker_alloc() {
@@ -198,7 +288,7 @@ void fuzzer_worker_free(FuzzerWorker* worker) {
     free(worker);
 }
 
-void fuzzer_worker_start(FuzzerWorker* worker, uint8_t timer_dellay) {
+bool fuzzer_worker_start(FuzzerWorker* worker, uint8_t timer_dellay) {
     furi_assert(worker);
 
     if(worker->attack_type < FuzzerWorkerAttackTypeMax) {
@@ -214,7 +304,9 @@ void fuzzer_worker_start(FuzzerWorker* worker, uint8_t timer_dellay) {
         ibutton_worker_start_thread(worker->proto_worker);
         ibutton_worker_emulate_start(worker->proto_worker, worker->key);
 #endif
+        return true;
     }
+    return false;
 }
 
 void fuzzer_worker_stop(FuzzerWorker* worker) {
@@ -233,6 +325,12 @@ void fuzzer_worker_stop(FuzzerWorker* worker) {
         worker->treead_running = false;
     }
 
+    if(worker->attack_type == FuzzerWorkerAttackTypeLoadFileCustomUids) {
+        buffered_file_stream_close(worker->uids_stream);
+        furi_record_close(RECORD_STORAGE);
+        worker->attack_type = FuzzerWorkerAttackTypeMax;
+    }
+
     // TODO  anything else
 }
 
diff --git a/applications/external/pacs_fuzzer/lib/worker/fake_worker.h b/applications/external/pacs_fuzzer/lib/worker/fake_worker.h
index 00e3cb23f..2628ac649 100644
--- a/applications/external/pacs_fuzzer/lib/worker/fake_worker.h
+++ b/applications/external/pacs_fuzzer/lib/worker/fake_worker.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stdbool.h>
+#include <furi.h>
 
 #include "protocol.h"
 
@@ -21,12 +21,17 @@ FuzzerWorker* fuzzer_worker_alloc();
 
 void fuzzer_worker_free(FuzzerWorker* worker);
 
-void fuzzer_worker_start(FuzzerWorker* worker, uint8_t timer_dellay);
+bool fuzzer_worker_start(FuzzerWorker* worker, uint8_t timer_dellay);
 
 void fuzzer_worker_stop(FuzzerWorker* worker);
 
 bool fuzzer_worker_attack_dict(FuzzerWorker* worker, FuzzerProtos protocol_index);
 
+bool fuzzer_worker_attack_file_dict(
+    FuzzerWorker* worker,
+    FuzzerProtos protocol_index,
+    FuriString* file_path);
+
 void fuzzer_worker_get_current_key(FuzzerWorker* worker, uint8_t* key);
 
 void fuzzer_worker_set_uid_chaged_callback(
diff --git a/applications/external/pacs_fuzzer/lib/worker/protocol.h b/applications/external/pacs_fuzzer/lib/worker/protocol.h
index c6d7c88ba..a69d3db04 100644
--- a/applications/external/pacs_fuzzer/lib/worker/protocol.h
+++ b/applications/external/pacs_fuzzer/lib/worker/protocol.h
@@ -4,24 +4,6 @@
 
 // #define RFID_125_PROTOCOL
 
-#if defined(RFID_125_PROTOCOL)
-
-#define MAX_PAYLOAD_SIZE 6
-
-#define FUZZ_TIME_DELAY_MIN (5)
-#define FUZZ_TIME_DELAY_DEFAULT (10)
-#define FUZZ_TIME_DELAY_MAX (70)
-
-#else
-
-#define MAX_PAYLOAD_SIZE 8
-
-#define FUZZ_TIME_DELAY_MIN (4)
-#define FUZZ_TIME_DELAY_DEFAULT (8)
-#define FUZZ_TIME_DELAY_MAX (80)
-
-#endif
-
 typedef enum {
 
 #if defined(RFID_125_PROTOCOL)
diff --git a/applications/external/pacs_fuzzer/lib/worker/protocol_i.h b/applications/external/pacs_fuzzer/lib/worker/protocol_i.h
new file mode 100644
index 000000000..e0ab76cb3
--- /dev/null
+++ b/applications/external/pacs_fuzzer/lib/worker/protocol_i.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "protocol.h"
+
+#if defined(RFID_125_PROTOCOL)
+
+#define MAX_PAYLOAD_SIZE 6
+
+#define FUZZ_TIME_DELAY_MIN (5)
+#define FUZZ_TIME_DELAY_DEFAULT (10)
+#define FUZZ_TIME_DELAY_MAX (70)
+
+#define FUZZER_APP_CUSTOM_DICT_EXTENSION ".txt"
+#define FUZZER_APP_CUSTOM_DICT_FOLDER "/ext/rfidfuzzer"
+#define FUZZER_APP_KEY_EXTENSION ".rfid"
+#define FUZZER_APP_PATH_KEY_FOLDER "/ext/lfrfid"
+
+#else
+
+#define MAX_PAYLOAD_SIZE 8
+
+#define FUZZ_TIME_DELAY_MIN (4)
+#define FUZZ_TIME_DELAY_DEFAULT (8)
+#define FUZZ_TIME_DELAY_MAX (80)
+
+#define FUZZER_APP_CUSTOM_DICT_EXTENSION ".txt"
+#define FUZZER_APP_CUSTOM_DICT_FOLDER "/ext/ibtnfuzzer"
+#define FUZZER_APP_KEY_EXTENSION ".ibtn"
+#define FUZZER_APP_PATH_KEY_FOLDER "/ext/ibutton"
+
+#endif
diff --git a/applications/external/pacs_fuzzer/scenes/fuzzer_scene_attack.c b/applications/external/pacs_fuzzer/scenes/fuzzer_scene_attack.c
index f80cc9b29..c18e2cec9 100644
--- a/applications/external/pacs_fuzzer/scenes/fuzzer_scene_attack.c
+++ b/applications/external/pacs_fuzzer/scenes/fuzzer_scene_attack.c
@@ -31,21 +31,20 @@ void fuzzer_scene_attack_on_enter(void* context) {
 
     FuzzerProtocol proto = fuzzer_proto_items[app->fuzzer_state.proto_index];
 
-    fuzzer_view_attack_reset_data(
-        app->attack_view,
-        fuzzer_attack_names[app->fuzzer_state.menu_index],
-        proto.name,
-        proto.data_size);
-
     fuzzer_worker_set_uid_chaged_callback(
         app->worker, fuzzer_scene_attack_worker_tick_callback, app);
 
     fuzzer_worker_set_end_callback(app->worker, fuzzer_scene_attack_worker_end_callback, app);
 
-    uint8_t temp_uid[MAX_PAYLOAD_SIZE];
+    uint8_t temp_uid[proto.data_size];
 
     fuzzer_worker_get_current_key(app->worker, temp_uid);
 
+    fuzzer_view_attack_reset_data(
+        app->attack_view,
+        fuzzer_attack_names[app->fuzzer_state.menu_index],
+        proto.name,
+        proto.data_size);
     fuzzer_view_attack_set_attack(app->attack_view, false);
     fuzzer_view_attack_set_uid(app->attack_view, (uint8_t*)&temp_uid);
 
@@ -73,11 +72,11 @@ bool fuzzer_scene_attack_on_event(void* context, SceneManagerEvent event) {
             }
             consumed = true;
         } else if(event.event == FuzzerCustomEventViewAttackOk) {
-            if(!scene_manager_get_scene_state(app->scene_manager, FuzzerSceneAttack)) {
+            if(!scene_manager_get_scene_state(app->scene_manager, FuzzerSceneAttack) &&
+               fuzzer_worker_start(
+                   app->worker, fuzzer_view_attack_get_time_delay(app->attack_view))) {
                 scene_manager_set_scene_state(app->scene_manager, FuzzerSceneAttack, true);
                 fuzzer_view_attack_set_attack(app->attack_view, true);
-                fuzzer_worker_start(
-                    app->worker, fuzzer_view_attack_get_time_delay(app->attack_view));
             } else {
                 scene_manager_set_scene_state(app->scene_manager, FuzzerSceneAttack, false);
                 fuzzer_view_attack_set_attack(app->attack_view, false);
@@ -85,7 +84,7 @@ bool fuzzer_scene_attack_on_event(void* context, SceneManagerEvent event) {
             }
             consumed = true;
         } else if(event.event == FuzzerCustomEventViewAttackTick) {
-            uint8_t temp_uid[MAX_PAYLOAD_SIZE];
+            uint8_t temp_uid[fuzzer_proto_items[app->fuzzer_state.proto_index].data_size];
 
             fuzzer_worker_get_current_key(app->worker, temp_uid);
 
diff --git a/applications/external/pacs_fuzzer/scenes/fuzzer_scene_main.c b/applications/external/pacs_fuzzer/scenes/fuzzer_scene_main.c
index 1caf0b0ed..a42701adf 100644
--- a/applications/external/pacs_fuzzer/scenes/fuzzer_scene_main.c
+++ b/applications/external/pacs_fuzzer/scenes/fuzzer_scene_main.c
@@ -10,6 +10,26 @@ void fuzzer_scene_main_callback(FuzzerCustomEvent event, void* context) {
     view_dispatcher_send_custom_event(app->view_dispatcher, event);
 }
 
+static bool fuzzer_scene_main_load_custom_dict(void* context) {
+    furi_assert(context);
+    PacsFuzzerApp* app = context;
+
+    FuzzerConsts* consts = app->fuzzer_const;
+
+    furi_string_set_str(app->file_path, consts->custom_dict_folder);
+
+    DialogsFileBrowserOptions browser_options;
+    dialog_file_browser_set_basic_options(
+        &browser_options, consts->custom_dict_extension, &I_rfid_10px);
+    browser_options.base_path = consts->custom_dict_folder;
+    browser_options.hide_ext = false;
+
+    bool res =
+        dialog_file_browser_show(app->dialogs, app->file_path, app->file_path, &browser_options);
+
+    return res;
+}
+
 void fuzzer_scene_main_on_enter(void* context) {
     furi_assert(context);
     PacsFuzzerApp* app = context;
@@ -36,16 +56,35 @@ bool fuzzer_scene_main_on_event(void* context, SceneManagerEvent event) {
         } else if(event.event == FuzzerCustomEventViewMainOk) {
             fuzzer_view_main_get_state(app->main_view, &app->fuzzer_state);
 
+            // TODO error logic
+            bool loading_ok = false;
+
             switch(app->fuzzer_state.menu_index) {
             case FuzzerMainMenuIndexDefaultValues:
-                fuzzer_worker_attack_dict(app->worker, app->fuzzer_state.proto_index);
+
+                loading_ok = fuzzer_worker_attack_dict(app->worker, app->fuzzer_state.proto_index);
+
+                if(!loading_ok) {
+                    // error
+                }
+                break;
+
+            case FuzzerMainMenuIndexLoadFileCustomUids:
+                if(!fuzzer_scene_main_load_custom_dict(app)) {
+                    break;
+                } else {
+                    loading_ok = fuzzer_worker_attack_file_dict(
+                        app->worker, app->fuzzer_state.proto_index, app->file_path);
+                }
                 break;
 
             default:
                 break;
             }
 
-            scene_manager_next_scene(app->scene_manager, FuzzerSceneAttack);
+            if(loading_ok) {
+                scene_manager_next_scene(app->scene_manager, FuzzerSceneAttack);
+            }
             consumed = true;
         }
     }