diff --git a/applications/debug/expansion_test/expansion_test.c b/applications/debug/expansion_test/expansion_test.c
index 73863798e..0b4b0b27c 100644
--- a/applications/debug/expansion_test/expansion_test.c
+++ b/applications/debug/expansion_test/expansion_test.c
@@ -96,6 +96,7 @@ static void expansion_test_app_start(ExpansionTestApp* instance) {
     instance->thread_id = furi_thread_get_current_id();
     instance->expansion = furi_record_open(RECORD_EXPANSION);
     instance->handle = furi_hal_serial_control_acquire(MODULE_SERIAL_ID);
+    furi_check(instance->handle);
     // Configure the serial port
     furi_hal_serial_init(instance->handle, EXPANSION_PROTOCOL_DEFAULT_BAUD_RATE);
     // Start waiting for the initial pulse
diff --git a/applications/main/gpio/gpio_app.c b/applications/main/gpio/gpio_app.c
index 020fbf79a..85c2ece84 100644
--- a/applications/main/gpio/gpio_app.c
+++ b/applications/main/gpio/gpio_app.c
@@ -70,7 +70,12 @@ GpioApp* gpio_app_alloc() {
         GpioAppViewUsbUartCfg,
         variable_item_list_get_view(app->var_item_list));
 
-    scene_manager_next_scene(app->scene_manager, GpioSceneStart);
+    if(furi_hal_serial_control_is_busy(FuriHalSerialIdUsart) ||
+       furi_hal_serial_control_is_busy(FuriHalSerialIdLpuart)) {
+        scene_manager_next_scene(app->scene_manager, GpioSceneErrorExpansion);
+    } else {
+        scene_manager_next_scene(app->scene_manager, GpioSceneStart);
+    }
 
     return app;
 }
diff --git a/applications/main/gpio/scenes/gpio_scene_config.h b/applications/main/gpio/scenes/gpio_scene_config.h
index d6fd24d19..3d3fb2f4e 100644
--- a/applications/main/gpio/scenes/gpio_scene_config.h
+++ b/applications/main/gpio/scenes/gpio_scene_config.h
@@ -3,4 +3,5 @@ ADD_SCENE(gpio, test, Test)
 ADD_SCENE(gpio, usb_uart, UsbUart)
 ADD_SCENE(gpio, usb_uart_cfg, UsbUartCfg)
 ADD_SCENE(gpio, usb_uart_close_rpc, UsbUartCloseRpc)
+ADD_SCENE(gpio, error_expansion, ErrorExpansion)
 ADD_SCENE(gpio, exit_confirm, ExitConfirm)
diff --git a/applications/main/gpio/scenes/gpio_scene_error_expansion.c b/applications/main/gpio/scenes/gpio_scene_error_expansion.c
new file mode 100644
index 000000000..4f30f8b9d
--- /dev/null
+++ b/applications/main/gpio/scenes/gpio_scene_error_expansion.c
@@ -0,0 +1,43 @@
+#include "../gpio_app_i.h"
+#include "../gpio_custom_event.h"
+
+void gpio_scene_error_expansion_on_enter(void* context) {
+    GpioApp* app = context;
+
+    widget_add_icon_element(app->widget, 78, 0, &I_ActiveConnection_50x64);
+    widget_add_string_multiline_element(
+        app->widget, 3, 2, AlignLeft, AlignTop, FontPrimary, "Ext. Module\nis connected!");
+    widget_add_string_multiline_element(
+        app->widget,
+        3,
+        30,
+        AlignLeft,
+        AlignTop,
+        FontSecondary,
+        "Disconnect External\n"
+        "Module\n"
+        "to use this function.");
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, GpioAppViewUsbUartCloseRpc);
+}
+
+bool gpio_scene_error_expansion_on_event(void* context, SceneManagerEvent event) {
+    GpioApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == GpioCustomEventErrorBack) {
+            if(!scene_manager_previous_scene(app->scene_manager)) {
+                scene_manager_stop(app->scene_manager);
+                view_dispatcher_stop(app->view_dispatcher);
+            }
+            consumed = true;
+        }
+    }
+    return consumed;
+}
+
+void gpio_scene_error_expansion_on_exit(void* context) {
+    GpioApp* app = context;
+    widget_reset(app->widget);
+}
diff --git a/targets/f18/api_symbols.csv b/targets/f18/api_symbols.csv
index 5259db0f3..4a79c5553 100644
--- a/targets/f18/api_symbols.csv
+++ b/targets/f18/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,52.0,,
+Version,+,53.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -1277,11 +1277,12 @@ Function,+,furi_hal_serial_async_rx_stop,void,FuriHalSerialHandle*
 Function,+,furi_hal_serial_control_acquire,FuriHalSerialHandle*,FuriHalSerialId
 Function,+,furi_hal_serial_control_deinit,void,
 Function,+,furi_hal_serial_control_init,void,
+Function,+,furi_hal_serial_control_is_busy,_Bool,FuriHalSerialId
 Function,+,furi_hal_serial_control_release,void,FuriHalSerialHandle*
-Function,+,furi_hal_serial_control_resume,void,
+Function,-,furi_hal_serial_control_resume,void,
 Function,+,furi_hal_serial_control_set_expansion_callback,void,"FuriHalSerialId, FuriHalSerialControlExpansionCallback, void*"
 Function,+,furi_hal_serial_control_set_logging_config,void,"FuriHalSerialId, uint32_t"
-Function,+,furi_hal_serial_control_suspend,void,
+Function,-,furi_hal_serial_control_suspend,void,
 Function,+,furi_hal_serial_deinit,void,FuriHalSerialHandle*
 Function,+,furi_hal_serial_disable_direction,void,"FuriHalSerialHandle*, FuriHalSerialDirection"
 Function,+,furi_hal_serial_dma_rx,size_t,"FuriHalSerialHandle*, uint8_t*, size_t"
diff --git a/targets/f7/api_symbols.csv b/targets/f7/api_symbols.csv
index c5c5cf2a0..075d1049a 100644
--- a/targets/f7/api_symbols.csv
+++ b/targets/f7/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,52.0,,
+Version,+,53.0,,
 Header,+,applications/drivers/subghz/cc1101_ext/cc1101_ext_interconnect.h,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
@@ -1443,11 +1443,12 @@ Function,+,furi_hal_serial_async_rx_stop,void,FuriHalSerialHandle*
 Function,+,furi_hal_serial_control_acquire,FuriHalSerialHandle*,FuriHalSerialId
 Function,+,furi_hal_serial_control_deinit,void,
 Function,+,furi_hal_serial_control_init,void,
+Function,+,furi_hal_serial_control_is_busy,_Bool,FuriHalSerialId
 Function,+,furi_hal_serial_control_release,void,FuriHalSerialHandle*
-Function,+,furi_hal_serial_control_resume,void,
+Function,-,furi_hal_serial_control_resume,void,
 Function,+,furi_hal_serial_control_set_expansion_callback,void,"FuriHalSerialId, FuriHalSerialControlExpansionCallback, void*"
 Function,+,furi_hal_serial_control_set_logging_config,void,"FuriHalSerialId, uint32_t"
-Function,+,furi_hal_serial_control_suspend,void,
+Function,-,furi_hal_serial_control_suspend,void,
 Function,+,furi_hal_serial_deinit,void,FuriHalSerialHandle*
 Function,+,furi_hal_serial_disable_direction,void,"FuriHalSerialHandle*, FuriHalSerialDirection"
 Function,+,furi_hal_serial_dma_rx,size_t,"FuriHalSerialHandle*, uint8_t*, size_t"
diff --git a/targets/f7/ble_glue/tl_dbg_conf.h b/targets/f7/ble_glue/tl_dbg_conf.h
index daaa9d82b..240cd5f2f 100644
--- a/targets/f7/ble_glue/tl_dbg_conf.h
+++ b/targets/f7/ble_glue/tl_dbg_conf.h
@@ -38,7 +38,7 @@ extern "C" {
 #endif
 
 #if(TL_SHCI_CMD_DBG_RAW_EN != 0)
-#define TL_SHCI_CMD_DBG_RAW(_PDATA_, _SIZE_) furi_hal_console_tx_with_new_line(_PDATA_, _SIZE_)
+#define TL_SHCI_CMD_DBG_RAW(_PDATA_, _SIZE_) furi_log_tx(_PDATA_, _SIZE_)
 #else
 #define TL_SHCI_CMD_DBG_RAW(...)
 #endif
@@ -52,7 +52,7 @@ extern "C" {
 #endif
 
 #if(TL_SHCI_EVT_DBG_RAW_EN != 0)
-#define TL_SHCI_EVT_DBG_RAW(_PDATA_, _SIZE_) furi_hal_console_tx_with_new_line(_PDATA_, _SIZE_)
+#define TL_SHCI_EVT_DBG_RAW(_PDATA_, _SIZE_) furi_log_tx(_PDATA_, _SIZE_)
 #else
 #define TL_SHCI_EVT_DBG_RAW(...)
 #endif
@@ -69,7 +69,7 @@ extern "C" {
 #endif
 
 #if(TL_HCI_CMD_DBG_RAW_EN != 0)
-#define TL_HCI_CMD_DBG_RAW(_PDATA_, _SIZE_) furi_hal_console_tx_with_new_line(_PDATA_, _SIZE_)
+#define TL_HCI_CMD_DBG_RAW(_PDATA_, _SIZE_) furi_log_tx(_PDATA_, _SIZE_)
 #else
 #define TL_HCI_CMD_DBG_RAW(...)
 #endif
@@ -83,7 +83,7 @@ extern "C" {
 #endif
 
 #if(TL_HCI_EVT_DBG_RAW_EN != 0)
-#define TL_HCI_EVT_DBG_RAW(_PDATA_, _SIZE_) furi_hal_console_tx_with_new_line(_PDATA_, _SIZE_)
+#define TL_HCI_EVT_DBG_RAW(_PDATA_, _SIZE_) furi_log_tx(_PDATA_, _SIZE_)
 #else
 #define TL_HCI_EVT_DBG_RAW(...)
 #endif
diff --git a/targets/f7/furi_hal/furi_hal_os.c b/targets/f7/furi_hal/furi_hal_os.c
index 9045295a1..85f2d2e45 100644
--- a/targets/f7/furi_hal/furi_hal_os.c
+++ b/targets/f7/furi_hal/furi_hal_os.c
@@ -194,7 +194,8 @@ void vPortSuppressTicksAndSleep(TickType_t expected_idle_ticks) {
         if(completed_ticks > 0) {
             if(completed_ticks > expected_idle_ticks) {
 #ifdef FURI_HAL_OS_DEBUG
-                furi_hal_console_printf(">%lu\r\n", completed_ticks - expected_idle_ticks);
+                furi_log_print_raw_format(
+                    FuriLogLevelDebug, ">%lu\r\n", completed_ticks - expected_idle_ticks);
 #endif
                 completed_ticks = expected_idle_ticks;
             }
diff --git a/targets/f7/furi_hal/furi_hal_power.c b/targets/f7/furi_hal/furi_hal_power.c
index 483316c00..f03aea75f 100644
--- a/targets/f7/furi_hal/furi_hal_power.c
+++ b/targets/f7/furi_hal/furi_hal_power.c
@@ -173,7 +173,13 @@ static inline bool furi_hal_power_deep_sleep_available() {
 }
 
 static inline void furi_hal_power_light_sleep() {
+#ifdef FURI_HAL_POWER_DEBUG
+    furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_WFI_GPIO, 1);
+#endif
     __WFI();
+#ifdef FURI_HAL_POWER_DEBUG
+    furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_WFI_GPIO, 0);
+#endif
 }
 
 static inline void furi_hal_power_suspend_aux_periphs() {
@@ -223,7 +229,13 @@ static inline void furi_hal_power_deep_sleep() {
     __force_stores();
 #endif
 
+#ifdef FURI_HAL_POWER_DEBUG
+    furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_STOP_GPIO, 1);
+#endif
     __WFI();
+#ifdef FURI_HAL_POWER_DEBUG
+    furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_STOP_GPIO, 0);
+#endif
 
     LL_LPM_EnableSleep();
 
@@ -250,21 +262,9 @@ static inline void furi_hal_power_deep_sleep() {
 
 void furi_hal_power_sleep() {
     if(furi_hal_power_deep_sleep_available()) {
-#ifdef FURI_HAL_POWER_DEBUG
-        furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_STOP_GPIO, 1);
-#endif
         furi_hal_power_deep_sleep();
-#ifdef FURI_HAL_POWER_DEBUG
-        furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_STOP_GPIO, 0);
-#endif
     } else {
-#ifdef FURI_HAL_POWER_DEBUG
-        furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_WFI_GPIO, 1);
-#endif
         furi_hal_power_light_sleep();
-#ifdef FURI_HAL_POWER_DEBUG
-        furi_hal_gpio_write(FURI_HAL_POWER_DEBUG_WFI_GPIO, 0);
-#endif
     }
 }
 
diff --git a/targets/f7/furi_hal/furi_hal_serial_control.c b/targets/f7/furi_hal/furi_hal_serial_control.c
index 0c95d12c1..37454823b 100644
--- a/targets/f7/furi_hal/furi_hal_serial_control.c
+++ b/targets/f7/furi_hal/furi_hal_serial_control.c
@@ -9,10 +9,9 @@
 
 typedef enum {
     FuriHalSerialControlMessageTypeStop,
-    FuriHalSerialControlMessageTypeSuspend,
-    FuriHalSerialControlMessageTypeResume,
     FuriHalSerialControlMessageTypeAcquire,
     FuriHalSerialControlMessageTypeRelease,
+    FuriHalSerialControlMessageTypeIsBusy,
     FuriHalSerialControlMessageTypeLogging,
     FuriHalSerialControlMessageTypeExpansionSetCallback,
     FuriHalSerialControlMessageTypeExpansionIrq,
@@ -92,29 +91,6 @@ static bool furi_hal_serial_control_handler_stop(void* input, void* output) {
     return false;
 }
 
-static bool furi_hal_serial_control_handler_suspend(void* input, void* output) {
-    UNUSED(input);
-    UNUSED(output);
-
-    for(size_t i = 0; i < FuriHalSerialIdMax; i++) {
-        furi_hal_serial_tx_wait_complete(&furi_hal_serial_control->handles[i]);
-        furi_hal_serial_suspend(&furi_hal_serial_control->handles[i]);
-    }
-
-    return true;
-}
-
-static bool furi_hal_serial_control_handler_resume(void* input, void* output) {
-    UNUSED(input);
-    UNUSED(output);
-
-    for(size_t i = 0; i < FuriHalSerialIdMax; i++) {
-        furi_hal_serial_resume(&furi_hal_serial_control->handles[i]);
-    }
-
-    return true;
-}
-
 static bool furi_hal_serial_control_handler_acquire(void* input, void* output) {
     FuriHalSerialId serial_id = *(FuriHalSerialId*)input;
     if(furi_hal_serial_control->handles[serial_id].in_use) {
@@ -148,6 +124,13 @@ static bool furi_hal_serial_control_handler_release(void* input, void* output) {
     return true;
 }
 
+static bool furi_hal_serial_control_handler_is_busy(void* input, void* output) {
+    FuriHalSerialId serial_id = *(FuriHalSerialId*)input;
+    *(bool*)output = furi_hal_serial_control->handles[serial_id].in_use;
+
+    return true;
+}
+
 static bool furi_hal_serial_control_handler_logging(void* input, void* output) {
     UNUSED(output);
 
@@ -211,10 +194,9 @@ typedef bool (*FuriHalSerialControlCommandHandler)(void* input, void* output);
 
 static const FuriHalSerialControlCommandHandler furi_hal_serial_control_handlers[] = {
     [FuriHalSerialControlMessageTypeStop] = furi_hal_serial_control_handler_stop,
-    [FuriHalSerialControlMessageTypeSuspend] = furi_hal_serial_control_handler_suspend,
-    [FuriHalSerialControlMessageTypeResume] = furi_hal_serial_control_handler_resume,
     [FuriHalSerialControlMessageTypeAcquire] = furi_hal_serial_control_handler_acquire,
     [FuriHalSerialControlMessageTypeRelease] = furi_hal_serial_control_handler_release,
+    [FuriHalSerialControlMessageTypeIsBusy] = furi_hal_serial_control_handler_is_busy,
     [FuriHalSerialControlMessageTypeLogging] = furi_hal_serial_control_handler_logging,
     [FuriHalSerialControlMessageTypeExpansionSetCallback] =
         furi_hal_serial_control_handler_expansion_set_callback,
@@ -277,21 +259,18 @@ void furi_hal_serial_control_deinit(void) {
 void furi_hal_serial_control_suspend(void) {
     furi_check(furi_hal_serial_control);
 
-    FuriHalSerialControlMessage message;
-    message.type = FuriHalSerialControlMessageTypeSuspend;
-    message.api_lock = api_lock_alloc_locked();
-    furi_message_queue_put(furi_hal_serial_control->queue, &message, FuriWaitForever);
-    api_lock_wait_unlock_and_free(message.api_lock);
+    for(size_t i = 0; i < FuriHalSerialIdMax; i++) {
+        furi_hal_serial_tx_wait_complete(&furi_hal_serial_control->handles[i]);
+        furi_hal_serial_suspend(&furi_hal_serial_control->handles[i]);
+    }
 }
 
 void furi_hal_serial_control_resume(void) {
     furi_check(furi_hal_serial_control);
 
-    FuriHalSerialControlMessage message;
-    message.type = FuriHalSerialControlMessageTypeResume;
-    message.api_lock = api_lock_alloc_locked();
-    furi_message_queue_put(furi_hal_serial_control->queue, &message, FuriWaitForever);
-    api_lock_wait_unlock_and_free(message.api_lock);
+    for(size_t i = 0; i < FuriHalSerialIdMax; i++) {
+        furi_hal_serial_resume(&furi_hal_serial_control->handles[i]);
+    }
 }
 
 FuriHalSerialHandle* furi_hal_serial_control_acquire(FuriHalSerialId serial_id) {
@@ -322,6 +301,22 @@ void furi_hal_serial_control_release(FuriHalSerialHandle* handle) {
     api_lock_wait_unlock_and_free(message.api_lock);
 }
 
+bool furi_hal_serial_control_is_busy(FuriHalSerialId serial_id) {
+    furi_check(furi_hal_serial_control);
+
+    bool result = false;
+
+    FuriHalSerialControlMessage message;
+    message.type = FuriHalSerialControlMessageTypeIsBusy;
+    message.api_lock = api_lock_alloc_locked();
+    message.input = &serial_id;
+    message.output = &result;
+    furi_message_queue_put(furi_hal_serial_control->queue, &message, FuriWaitForever);
+    api_lock_wait_unlock_and_free(message.api_lock);
+
+    return result;
+}
+
 void furi_hal_serial_control_set_logging_config(FuriHalSerialId serial_id, uint32_t baud_rate) {
     furi_check(serial_id <= FuriHalSerialIdMax);
     furi_check(baud_rate >= 9600 && baud_rate <= 4000000);
diff --git a/targets/f7/furi_hal/furi_hal_serial_control.h b/targets/f7/furi_hal/furi_hal_serial_control.h
index 01fdf0a88..463f43181 100644
--- a/targets/f7/furi_hal/furi_hal_serial_control.h
+++ b/targets/f7/furi_hal/furi_hal_serial_control.h
@@ -12,10 +12,18 @@ void furi_hal_serial_control_init(void);
 /** De-Initialize Serial Control */
 void furi_hal_serial_control_deinit(void);
 
-/** Suspend All Serial Interfaces */
+/** Suspend All Serial Interfaces
+ *
+ * @warning    this is internal method, can only be used in suppress tick
+ *             callback
+ */
 void furi_hal_serial_control_suspend(void);
 
-/** Resume All Serial Interfaces */
+/** Resume All Serial Interfaces
+ *
+ * @warning    this is internal method, can only be used in suppress tick
+ *             callback
+ */
 void furi_hal_serial_control_resume(void);
 
 /** Acquire Serial Interface Handler
@@ -32,6 +40,14 @@ FuriHalSerialHandle* furi_hal_serial_control_acquire(FuriHalSerialId serial_id);
  */
 void furi_hal_serial_control_release(FuriHalSerialHandle* handle);
 
+/** Acquire Serial Interface Handler
+ *
+ * @param[in]  serial_id  The serial transceiver identifier
+ *
+ * @return     true if handle is acquired by someone
+ */
+bool furi_hal_serial_control_is_busy(FuriHalSerialId serial_id);
+
 /** Acquire Serial Interface Handler
  *
  * @param[in]  serial_id  The serial transceiver identifier. Use FuriHalSerialIdMax to disable logging.
diff --git a/targets/furi_hal_include/furi_hal_power.h b/targets/furi_hal_include/furi_hal_power.h
index 5edda6ba1..ebe0fe614 100644
--- a/targets/furi_hal_include/furi_hal_power.h
+++ b/targets/furi_hal_include/furi_hal_power.h
@@ -58,7 +58,7 @@ void furi_hal_power_insomnia_enter();
  */
 void furi_hal_power_insomnia_exit();
 
-/** Check if sleep availble
+/** Check if sleep available
  *
  * @return     true if available
  */