diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03497a26a..a77b868d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@
 - OFW: CCID: App changes and improvements (by @kidbomb)
 - OFW: API: Exposed `view_dispatcher_get_event_loop` (by @CookiePLMonster)
 - Furi:
+  - UL: Extra checks for OTG power enable/disable (by @xMasterX)
   - OFW: Replace all calls to strncpy with strlcpy, use strdup more, expose strlcat (by @CookiePLMonster)
   - OFW: Threading, Timers improvements (by @CookiePLMonster)
   - OFW: FuriTimer uses an event instead of a volatile bool to wait for deletion (by @CookiePLMonster)
diff --git a/applications/main/gpio/scenes/gpio_scene_start.c b/applications/main/gpio/scenes/gpio_scene_start.c
index f28b58b23..a3ec8559f 100644
--- a/applications/main/gpio/scenes/gpio_scene_start.c
+++ b/applications/main/gpio/scenes/gpio_scene_start.c
@@ -94,9 +94,9 @@ bool gpio_scene_start_on_event(void* context, SceneManagerEvent event) {
 
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == GpioStartEventOtgOn) {
-            furi_hal_power_enable_otg();
+            if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
         } else if(event.event == GpioStartEventOtgOff) {
-            furi_hal_power_disable_otg();
+            if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
         } else if(event.event == GpioStartEventManualControl) {
             scene_manager_set_scene_state(app->scene_manager, GpioSceneStart, GpioItemTest);
             scene_manager_next_scene(app->scene_manager, GpioSceneTest);
diff --git a/applications/main/infrared/infrared_app.c b/applications/main/infrared/infrared_app.c
index 75c969c26..674f0cc67 100644
--- a/applications/main/infrared/infrared_app.c
+++ b/applications/main/infrared/infrared_app.c
@@ -460,9 +460,9 @@ void infrared_set_tx_pin(InfraredApp* infrared, FuriHalInfraredTxPin tx_pin) {
 
 void infrared_enable_otg(InfraredApp* infrared, bool enable) {
     if(enable) {
-        furi_hal_power_enable_otg();
+        if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
     } else {
-        furi_hal_power_disable_otg();
+        if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
     }
     infrared->app_state.is_otg_enabled = enable;
 }
diff --git a/applications/main/onewire/onewire_cli.c b/applications/main/onewire/onewire_cli.c
index 128b58743..4ee81a462 100644
--- a/applications/main/onewire/onewire_cli.c
+++ b/applications/main/onewire/onewire_cli.c
@@ -20,7 +20,7 @@ static void onewire_cli_search(Cli* cli) {
     printf("Search started\r\n");
 
     onewire_host_start(onewire);
-    furi_hal_power_enable_otg();
+    if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
 
     while(!done) {
         if(onewire_host_search(onewire, address, OneWireHostSearchModeNormal) != 1) {
@@ -37,7 +37,7 @@ static void onewire_cli_search(Cli* cli) {
         furi_delay_ms(100);
     }
 
-    furi_hal_power_disable_otg();
+    if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
     onewire_host_free(onewire);
 }
 
diff --git a/applications/main/subghz/helpers/subghz_txrx_create_protocol_key.c b/applications/main/subghz/helpers/subghz_txrx_create_protocol_key.c
index 82990af02..68172612a 100644
--- a/applications/main/subghz/helpers/subghz_txrx_create_protocol_key.c
+++ b/applications/main/subghz/helpers/subghz_txrx_create_protocol_key.c
@@ -387,14 +387,23 @@ void subghz_txrx_gen_serial_gangqi(uint64_t* result_key) {
     uint64_t randkey;
     uint64_t only_required_bytes;
     uint16_t sum_of_3bytes;
+    uint8_t xorbytes;
 
     do {
         randkey = (uint64_t)rand();
-        only_required_bytes = (randkey & 0xFFFFF0000);
+        only_required_bytes = (randkey & 0x0FFFF0000) | 0x200000000;
         sum_of_3bytes = ((only_required_bytes >> 32) & 0xFF) +
                         ((only_required_bytes >> 24) & 0xFF) +
                         ((only_required_bytes >> 16) & 0xFF);
-    } while(!((!(sum_of_3bytes & 0x3)) && ((0xb2 < sum_of_3bytes) && (sum_of_3bytes < 0x1ae))));
+        xorbytes = ((only_required_bytes >> 32) & 0xFF) ^ ((only_required_bytes >> 24) & 0xFF) ^
+                   ((only_required_bytes >> 16) & 0xFF);
+    } while(
+        !((((!(sum_of_3bytes & 0x3)) && ((0xB < sum_of_3bytes) && (sum_of_3bytes < 0x141))) &&
+           ((((only_required_bytes >> 32) & 0xFF) == 0x2) ||
+            (((only_required_bytes >> 32) & 0xFF) == 0x3))) &&
+          ((((xorbytes == 0xBA) || (xorbytes == 0xE2)) ||
+            ((xorbytes == 0x3A) || (xorbytes == 0xF2))) ||
+           (xorbytes == 0xB2))));
 
     //                       Serial             01             button          01
     uint64_t new_key = only_required_bytes | (0b01 << 14) | (0xD << 10) | (0b01 << 8);
diff --git a/applications/services/expansion/expansion_worker.c b/applications/services/expansion/expansion_worker.c
index 421cb194e..2a64c9f7b 100644
--- a/applications/services/expansion/expansion_worker.c
+++ b/applications/services/expansion/expansion_worker.c
@@ -251,9 +251,9 @@ static bool expansion_worker_handle_state_connected(
                 if(!expansion_worker_rpc_session_open(instance)) break;
                 instance->state = ExpansionWorkerStateRpcActive;
             } else if(command == ExpansionFrameControlCommandEnableOtg) {
-                furi_hal_power_enable_otg();
+                if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
             } else if(command == ExpansionFrameControlCommandDisableOtg) {
-                furi_hal_power_disable_otg();
+                if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
             } else {
                 break;
             }
diff --git a/applications/services/rpc/rpc_gpio.c b/applications/services/rpc/rpc_gpio.c
index 40fc898a0..9952bec38 100644
--- a/applications/services/rpc/rpc_gpio.c
+++ b/applications/services/rpc/rpc_gpio.c
@@ -219,9 +219,9 @@ void rpc_system_gpio_set_otg_mode(const PB_Main* request, void* context) {
     const PB_Gpio_GpioOtgMode mode = request->content.gpio_set_otg_mode.mode;
 
     if(mode == PB_Gpio_GpioOtgMode_OFF) {
-        furi_hal_power_disable_otg();
+        if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
     } else {
-        furi_hal_power_enable_otg();
+        if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
     }
 
     rpc_send_and_release_empty(session, request->command_id, PB_CommandStatus_OK);
diff --git a/lib/ibutton/ibutton_worker_modes.c b/lib/ibutton/ibutton_worker_modes.c
index 5900b10a2..8efb78f03 100644
--- a/lib/ibutton/ibutton_worker_modes.c
+++ b/lib/ibutton/ibutton_worker_modes.c
@@ -75,7 +75,7 @@ void ibutton_worker_mode_idle_stop(iButtonWorker* worker) {
 
 void ibutton_worker_mode_read_start(iButtonWorker* worker) {
     UNUSED(worker);
-    furi_hal_power_enable_otg();
+    if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
 }
 
 void ibutton_worker_mode_read_tick(iButtonWorker* worker) {
@@ -90,7 +90,7 @@ void ibutton_worker_mode_read_tick(iButtonWorker* worker) {
 
 void ibutton_worker_mode_read_stop(iButtonWorker* worker) {
     UNUSED(worker);
-    furi_hal_power_disable_otg();
+    if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
 }
 
 /*********************** EMULATE ***********************/
@@ -120,7 +120,7 @@ void ibutton_worker_mode_emulate_stop(iButtonWorker* worker) {
 
 void ibutton_worker_mode_write_common_start(iButtonWorker* worker) { //-V524
     UNUSED(worker);
-    furi_hal_power_enable_otg();
+    if(!furi_hal_power_is_otg_enabled()) furi_hal_power_enable_otg();
 }
 
 void ibutton_worker_mode_write_id_tick(iButtonWorker* worker) {
@@ -149,5 +149,5 @@ void ibutton_worker_mode_write_copy_tick(iButtonWorker* worker) {
 
 void ibutton_worker_mode_write_common_stop(iButtonWorker* worker) { //-V524
     UNUSED(worker);
-    furi_hal_power_disable_otg();
+    if(furi_hal_power_is_otg_enabled()) furi_hal_power_disable_otg();
 }
diff --git a/lib/subghz/protocols/gangqi.c b/lib/subghz/protocols/gangqi.c
index 928e6760b..a2195dd33 100644
--- a/lib/subghz/protocols/gangqi.c
+++ b/lib/subghz/protocols/gangqi.c
@@ -496,8 +496,10 @@ void subghz_protocol_decoder_gangqi_get_string(void* context, FuriString* output
                                  (instance->generic.serial & 0xFF);
     // Returns true if serial is valid
     bool serial_is_valid =
-        ((!(sum_3bytes_serial & 0x3)) &&
-         ((0xb2 < sum_3bytes_serial) && (sum_3bytes_serial < 0x1ae)));
+        (((!(sum_3bytes_serial & 0x3)) &&
+          ((0xB < sum_3bytes_serial) && (sum_3bytes_serial < 0x141))) &&
+         ((((instance->generic.serial >> 16) & 0xFF) == 0x2) ||
+          (((instance->generic.serial >> 16) & 0xFF) == 0x3)));
 
     furi_string_cat_printf(
         output,