diff --git a/applications/services/gui/canvas.c b/applications/services/gui/canvas.c
index 18636ece..d47bba6b 100644
--- a/applications/services/gui/canvas.c
+++ b/applications/services/gui/canvas.c
@@ -57,7 +57,7 @@ uint8_t* canvas_get_buffer(Canvas* canvas) {
     return u8g2_GetBufferPtr(&canvas->fb);
 }
 
-size_t canvas_get_buffer_size(Canvas* canvas) {
+size_t canvas_get_buffer_size(const Canvas* canvas) {
     furi_assert(canvas);
     return u8g2_GetBufferTileWidth(&canvas->fb) * u8g2_GetBufferTileHeight(&canvas->fb) * 8;
 }
@@ -75,17 +75,17 @@ void canvas_frame_set(
     canvas->height = height;
 }
 
-uint8_t canvas_width(Canvas* canvas) {
+uint8_t canvas_width(const Canvas* canvas) {
     furi_assert(canvas);
     return canvas->width;
 }
 
-uint8_t canvas_height(Canvas* canvas) {
+uint8_t canvas_height(const Canvas* canvas) {
     furi_assert(canvas);
     return canvas->height;
 }
 
-uint8_t canvas_current_font_height(Canvas* canvas) {
+uint8_t canvas_current_font_height(const Canvas* canvas) {
     furi_assert(canvas);
     uint8_t font_height = u8g2_GetMaxCharHeight(&canvas->fb);
 
@@ -96,10 +96,10 @@ uint8_t canvas_current_font_height(Canvas* canvas) {
     return font_height;
 }
 
-CanvasFontParameters* canvas_get_font_params(Canvas* canvas, Font font) {
+const CanvasFontParameters* canvas_get_font_params(const Canvas* canvas, Font font) {
     furi_assert(canvas);
     furi_assert(font < FontTotalNumber);
-    return (CanvasFontParameters*)&canvas_font_params[font];
+    return &canvas_font_params[font];
 }
 
 void canvas_clear(Canvas* canvas) {
diff --git a/applications/services/gui/canvas.h b/applications/services/gui/canvas.h
index b2a065ca..f8fe2c1d 100644
--- a/applications/services/gui/canvas.h
+++ b/applications/services/gui/canvas.h
@@ -85,7 +85,7 @@ void canvas_commit(Canvas* canvas);
  *
  * @return     width in pixels.
  */
-uint8_t canvas_width(Canvas* canvas);
+uint8_t canvas_width(const Canvas* canvas);
 
 /** Get Canvas height
  *
@@ -93,7 +93,7 @@ uint8_t canvas_width(Canvas* canvas);
  *
  * @return     height in pixels.
  */
-uint8_t canvas_height(Canvas* canvas);
+uint8_t canvas_height(const Canvas* canvas);
 
 /** Get current font height
  *
@@ -101,7 +101,7 @@ uint8_t canvas_height(Canvas* canvas);
  *
  * @return     height in pixels.
  */
-uint8_t canvas_current_font_height(Canvas* canvas);
+uint8_t canvas_current_font_height(const Canvas* canvas);
 
 /** Get font parameters
  *
@@ -110,7 +110,7 @@ uint8_t canvas_current_font_height(Canvas* canvas);
  *
  * @return     pointer to CanvasFontParameters structure
  */
-CanvasFontParameters* canvas_get_font_params(Canvas* canvas, Font font);
+const CanvasFontParameters* canvas_get_font_params(const Canvas* canvas, Font font);
 
 /** Clear canvas
  *
diff --git a/applications/services/gui/canvas_i.h b/applications/services/gui/canvas_i.h
index 2b684923..12cabfa7 100644
--- a/applications/services/gui/canvas_i.h
+++ b/applications/services/gui/canvas_i.h
@@ -45,7 +45,7 @@ uint8_t* canvas_get_buffer(Canvas* canvas);
  *
  * @return     size of canvas in bytes
  */
-size_t canvas_get_buffer_size(Canvas* canvas);
+size_t canvas_get_buffer_size(const Canvas* canvas);
 
 /** Set drawing region relative to real screen buffer
  *
diff --git a/applications/services/gui/elements.c b/applications/services/gui/elements.c
index 54c36af7..9b7c84ec 100644
--- a/applications/services/gui/elements.c
+++ b/applications/services/gui/elements.c
@@ -639,7 +639,7 @@ void elements_text_box(
     bool inversed_present = false;
     Font current_font = FontSecondary;
     Font prev_font = FontSecondary;
-    CanvasFontParameters* font_params = canvas_get_font_params(canvas, current_font);
+    const CanvasFontParameters* font_params = canvas_get_font_params(canvas, current_font);
 
     // Fill line parameters
     uint8_t line_leading_min = font_params->leading_min;
diff --git a/applications/services/gui/gui.c b/applications/services/gui/gui.c
index af5cf862..94bab140 100644
--- a/applications/services/gui/gui.c
+++ b/applications/services/gui/gui.c
@@ -467,7 +467,7 @@ void gui_remove_framebuffer_callback(Gui* gui, GuiCanvasCommitCallback callback,
     gui_unlock(gui);
 }
 
-size_t gui_get_framebuffer_size(Gui* gui) {
+size_t gui_get_framebuffer_size(const Gui* gui) {
     furi_assert(gui);
     return canvas_get_buffer_size(gui->canvas);
 }
diff --git a/applications/services/gui/gui.h b/applications/services/gui/gui.h
index 4e7fc2e4..d7d73f27 100644
--- a/applications/services/gui/gui.h
+++ b/applications/services/gui/gui.h
@@ -94,7 +94,7 @@ void gui_remove_framebuffer_callback(Gui* gui, GuiCanvasCommitCallback callback,
  * @param      gui       Gui instance
  * @return     size_t    size of frame buffer in bytes
  */
-size_t gui_get_framebuffer_size(Gui* gui);
+size_t gui_get_framebuffer_size(const Gui* gui);
 
 /** Set lockdown mode
  *
diff --git a/applications/services/gui/icon_animation.c b/applications/services/gui/icon_animation.c
index 48c86220..b63d233f 100644
--- a/applications/services/gui/icon_animation.c
+++ b/applications/services/gui/icon_animation.c
@@ -29,7 +29,7 @@ void icon_animation_set_update_callback(
     instance->callback_context = context;
 }
 
-const uint8_t* icon_animation_get_data(IconAnimation* instance) {
+const uint8_t* icon_animation_get_data(const IconAnimation* instance) {
     return instance->icon->frames[instance->frame];
 }
 
@@ -51,12 +51,12 @@ void icon_animation_timer_callback(void* context) {
     }
 }
 
-uint8_t icon_animation_get_width(IconAnimation* instance) {
+uint8_t icon_animation_get_width(const IconAnimation* instance) {
     furi_assert(instance);
     return instance->icon->width;
 }
 
-uint8_t icon_animation_get_height(IconAnimation* instance) {
+uint8_t icon_animation_get_height(const IconAnimation* instance) {
     furi_assert(instance);
     return instance->icon->height;
 }
@@ -83,7 +83,7 @@ void icon_animation_stop(IconAnimation* instance) {
     }
 }
 
-bool icon_animation_is_last_frame(IconAnimation* instance) {
+bool icon_animation_is_last_frame(const IconAnimation* instance) {
     furi_assert(instance);
     return instance->icon->frame_count - instance->frame <= 1;
 }
diff --git a/applications/services/gui/icon_animation.h b/applications/services/gui/icon_animation.h
index 68479035..6e58df31 100644
--- a/applications/services/gui/icon_animation.h
+++ b/applications/services/gui/icon_animation.h
@@ -55,7 +55,7 @@ void icon_animation_set_update_callback(
  *
  * @return     width in pixels
  */
-uint8_t icon_animation_get_width(IconAnimation* instance);
+uint8_t icon_animation_get_width(const IconAnimation* instance);
 
 /** Get icon animation height
  *
@@ -63,7 +63,7 @@ uint8_t icon_animation_get_width(IconAnimation* instance);
  *
  * @return     height in pixels
  */
-uint8_t icon_animation_get_height(IconAnimation* instance);
+uint8_t icon_animation_get_height(const IconAnimation* instance);
 
 /** Start icon animation
  *
@@ -83,7 +83,7 @@ void icon_animation_stop(IconAnimation* instance);
  *
  * @return     true if last frame
  */
-bool icon_animation_is_last_frame(IconAnimation* instance);
+bool icon_animation_is_last_frame(const IconAnimation* instance);
 
 #ifdef __cplusplus
 }
diff --git a/applications/services/gui/icon_animation_i.h b/applications/services/gui/icon_animation_i.h
index 4053a120..62858d28 100644
--- a/applications/services/gui/icon_animation_i.h
+++ b/applications/services/gui/icon_animation_i.h
@@ -24,7 +24,7 @@ struct IconAnimation {
  *
  * @return     pointer to current frame XBM bitmap data
  */
-const uint8_t* icon_animation_get_data(IconAnimation* instance);
+const uint8_t* icon_animation_get_data(const IconAnimation* instance);
 
 /** Advance to next frame
  *
diff --git a/applications/services/gui/modules/widget_elements/widget_element_text_scroll.c b/applications/services/gui/modules/widget_elements/widget_element_text_scroll.c
index d8fc1131..5d522c74 100644
--- a/applications/services/gui/modules/widget_elements/widget_element_text_scroll.c
+++ b/applications/services/gui/modules/widget_elements/widget_element_text_scroll.c
@@ -74,7 +74,7 @@ static void widget_element_text_scroll_fill_lines(Canvas* canvas, WidgetElement*
         }
         // Set canvas font
         canvas_set_font(canvas, line_tmp.font);
-        CanvasFontParameters* params = canvas_get_font_params(canvas, line_tmp.font);
+        const CanvasFontParameters* params = canvas_get_font_params(canvas, line_tmp.font);
         total_height += params->height;
         if(total_height > model->height) {
             model->scroll_pos_total++;
@@ -138,7 +138,7 @@ static void widget_element_text_scroll_draw(Canvas* canvas, WidgetElement* eleme
             TextScrollLineArray_next(it), curr_line++) {
             if(curr_line < model->scroll_pos_current) continue;
             TextScrollLineArray* line = TextScrollLineArray_ref(it);
-            CanvasFontParameters* params = canvas_get_font_params(canvas, line->font);
+            const CanvasFontParameters* params = canvas_get_font_params(canvas, line->font);
             if(y + params->descender > model->y + model->height) break;
             canvas_set_font(canvas, line->font);
             if(line->horizontal == AlignLeft) {
diff --git a/applications/services/gui/scene_manager.c b/applications/services/gui/scene_manager.c
index 590145e1..4064dafb 100644
--- a/applications/services/gui/scene_manager.c
+++ b/applications/services/gui/scene_manager.c
@@ -34,7 +34,7 @@ void scene_manager_set_scene_state(SceneManager* scene_manager, uint32_t scene_i
     scene_manager->scene[scene_id].state = state;
 }
 
-uint32_t scene_manager_get_scene_state(SceneManager* scene_manager, uint32_t scene_id) {
+uint32_t scene_manager_get_scene_state(const SceneManager* scene_manager, uint32_t scene_id) {
     furi_assert(scene_manager);
     furi_assert(scene_id < scene_manager->scene_handlers->scene_num);
 
@@ -184,7 +184,7 @@ bool scene_manager_search_and_switch_to_previous_scene_one_of(
     return scene_found;
 }
 
-bool scene_manager_has_previous_scene(SceneManager* scene_manager, uint32_t scene_id) {
+bool scene_manager_has_previous_scene(const SceneManager* scene_manager, uint32_t scene_id) {
     furi_assert(scene_manager);
     bool scene_found = false;
 
diff --git a/applications/services/gui/scene_manager.h b/applications/services/gui/scene_manager.h
index 5b833e5d..c349a12c 100644
--- a/applications/services/gui/scene_manager.h
+++ b/applications/services/gui/scene_manager.h
@@ -63,7 +63,7 @@ void scene_manager_set_scene_state(SceneManager* scene_manager, uint32_t scene_i
  *
  * @return     Scene state
  */
-uint32_t scene_manager_get_scene_state(SceneManager* scene_manager, uint32_t scene_id);
+uint32_t scene_manager_get_scene_state(const SceneManager* scene_manager, uint32_t scene_id);
 
 /** Scene Manager allocation and configuration
  *
@@ -134,7 +134,7 @@ bool scene_manager_previous_scene(SceneManager* scene_manager);
  *
  * @return     true if previous scene was found, false otherwise
  */
-bool scene_manager_has_previous_scene(SceneManager* scene_manager, uint32_t scene_id);
+bool scene_manager_has_previous_scene(const SceneManager* scene_manager, uint32_t scene_id);
 
 /** Search and switch to previous Scene
  *
diff --git a/applications/services/gui/view_port.c b/applications/services/gui/view_port.c
index ffd01450..5760ed57 100644
--- a/applications/services/gui/view_port.c
+++ b/applications/services/gui/view_port.c
@@ -89,7 +89,7 @@ void view_port_set_width(ViewPort* view_port, uint8_t width) {
     view_port->width = width;
 }
 
-uint8_t view_port_get_width(ViewPort* view_port) {
+uint8_t view_port_get_width(const ViewPort* view_port) {
     furi_assert(view_port);
     return view_port->width;
 }
@@ -99,7 +99,7 @@ void view_port_set_height(ViewPort* view_port, uint8_t height) {
     view_port->height = height;
 }
 
-uint8_t view_port_get_height(ViewPort* view_port) {
+uint8_t view_port_get_height(const ViewPort* view_port) {
     furi_assert(view_port);
     return view_port->height;
 }
@@ -112,7 +112,7 @@ void view_port_enabled_set(ViewPort* view_port, bool enabled) {
     }
 }
 
-bool view_port_is_enabled(ViewPort* view_port) {
+bool view_port_is_enabled(const ViewPort* view_port) {
     furi_assert(view_port);
     return view_port->is_enabled;
 }
diff --git a/applications/services/gui/view_port.h b/applications/services/gui/view_port.h
index 703e9924..752fc46b 100644
--- a/applications/services/gui/view_port.h
+++ b/applications/services/gui/view_port.h
@@ -56,7 +56,7 @@ void view_port_free(ViewPort* view_port);
  * @param      width      wanted width, 0 - auto.
  */
 void view_port_set_width(ViewPort* view_port, uint8_t width);
-uint8_t view_port_get_width(ViewPort* view_port);
+uint8_t view_port_get_width(const ViewPort* view_port);
 
 /** Set view_port height.
  *
@@ -66,7 +66,7 @@ uint8_t view_port_get_width(ViewPort* view_port);
  * @param      height     wanted height, 0 - auto.
  */
 void view_port_set_height(ViewPort* view_port, uint8_t height);
-uint8_t view_port_get_height(ViewPort* view_port);
+uint8_t view_port_get_height(const ViewPort* view_port);
 
 /** Enable or disable view_port rendering.
  *
@@ -75,7 +75,7 @@ uint8_t view_port_get_height(ViewPort* view_port);
  * @warning    automatically dispatches update event
  */
 void view_port_enabled_set(ViewPort* view_port, bool enabled);
-bool view_port_is_enabled(ViewPort* view_port);
+bool view_port_is_enabled(const ViewPort* view_port);
 
 /** ViewPort event callbacks
  *
diff --git a/applications/services/loader/loader.c b/applications/services/loader/loader.c
index 97d1e6e4..caaf9f11 100644
--- a/applications/services/loader/loader.c
+++ b/applications/services/loader/loader.c
@@ -262,7 +262,7 @@ void loader_unlock(Loader* instance) {
     FURI_CRITICAL_EXIT();
 }
 
-bool loader_is_locked(Loader* instance) {
+bool loader_is_locked(const Loader* instance) {
     return instance->lock_count > 0;
 }
 
diff --git a/applications/services/loader/loader.h b/applications/services/loader/loader.h
index 954e79c5..8dbc4fc3 100644
--- a/applications/services/loader/loader.h
+++ b/applications/services/loader/loader.h
@@ -43,7 +43,7 @@ bool loader_lock(Loader* instance);
 void loader_unlock(Loader* instance);
 
 /** Get loader lock status */
-bool loader_is_locked(Loader* instance);
+bool loader_is_locked(const Loader* instance);
 
 /** Show primary loader */
 void loader_show_menu();
diff --git a/applications/services/locale/locale.h b/applications/services/locale/locale.h
index 5f2a4d87..61fb4c60 100644
--- a/applications/services/locale/locale.h
+++ b/applications/services/locale/locale.h
@@ -81,7 +81,7 @@ void locale_format_time(
  *
  * @return     The Locale DateFormat.
  */
-LocaleDateFormat locale_get_date_format();
+LocaleDateFormat locale_get_date_format(void);
 
 /** Set Locale DateFormat
  *
diff --git a/firmware/targets/f18/api_symbols.csv b/firmware/targets/f18/api_symbols.csv
index d29d696f..462fbf73 100644
--- a/firmware/targets/f18/api_symbols.csv
+++ b/firmware/targets/f18/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,13.1,,
+Version,+,14.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -522,7 +522,7 @@ Function,-,bzero,void,"void*, size_t"
 Function,-,calloc,void*,"size_t, size_t"
 Function,+,canvas_clear,void,Canvas*
 Function,+,canvas_commit,void,Canvas*
-Function,+,canvas_current_font_height,uint8_t,Canvas*
+Function,+,canvas_current_font_height,uint8_t,const Canvas*
 Function,+,canvas_draw_bitmap,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, const uint8_t*"
 Function,+,canvas_draw_box,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t"
 Function,+,canvas_draw_circle,void,"Canvas*, uint8_t, uint8_t, uint8_t"
@@ -539,9 +539,9 @@ Function,+,canvas_draw_str,void,"Canvas*, uint8_t, uint8_t, const char*"
 Function,+,canvas_draw_str_aligned,void,"Canvas*, uint8_t, uint8_t, Align, Align, const char*"
 Function,+,canvas_draw_triangle,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, CanvasDirection"
 Function,+,canvas_draw_xbm,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, const uint8_t*"
-Function,+,canvas_get_font_params,CanvasFontParameters*,"Canvas*, Font"
+Function,+,canvas_get_font_params,const CanvasFontParameters*,"const Canvas*, Font"
 Function,+,canvas_glyph_width,uint8_t,"Canvas*, char"
-Function,+,canvas_height,uint8_t,Canvas*
+Function,+,canvas_height,uint8_t,const Canvas*
 Function,+,canvas_invert_color,void,Canvas*
 Function,+,canvas_reset,void,Canvas*
 Function,+,canvas_set_bitmap_mode,void,"Canvas*, _Bool"
@@ -550,7 +550,7 @@ Function,+,canvas_set_custom_u8g2_font,void,"Canvas*, const uint8_t*"
 Function,+,canvas_set_font,void,"Canvas*, Font"
 Function,+,canvas_set_font_direction,void,"Canvas*, CanvasDirection"
 Function,+,canvas_string_width,uint16_t,"Canvas*, const char*"
-Function,+,canvas_width,uint8_t,Canvas*
+Function,+,canvas_width,uint8_t,const Canvas*
 Function,-,cfree,void,void*
 Function,-,clearerr,void,FILE*
 Function,-,clearerr_unlocked,void,FILE*
@@ -1063,9 +1063,9 @@ Function,+,furi_hal_spi_bus_handle_deinit,void,FuriHalSpiBusHandle*
 Function,+,furi_hal_spi_bus_handle_init,void,FuriHalSpiBusHandle*
 Function,+,furi_hal_spi_bus_init,void,FuriHalSpiBus*
 Function,+,furi_hal_spi_bus_rx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, size_t, uint32_t"
-Function,+,furi_hal_spi_bus_trx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, uint8_t*, size_t, uint32_t"
+Function,+,furi_hal_spi_bus_trx,_Bool,"FuriHalSpiBusHandle*, const uint8_t*, uint8_t*, size_t, uint32_t"
 Function,+,furi_hal_spi_bus_trx_dma,_Bool,"FuriHalSpiBusHandle*, uint8_t*, uint8_t*, size_t, uint32_t"
-Function,+,furi_hal_spi_bus_tx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, size_t, uint32_t"
+Function,+,furi_hal_spi_bus_tx,_Bool,"FuriHalSpiBusHandle*, const uint8_t*, size_t, uint32_t"
 Function,-,furi_hal_spi_config_deinit_early,void,
 Function,-,furi_hal_spi_config_init,void,
 Function,-,furi_hal_spi_config_init_early,void,
@@ -1123,6 +1123,7 @@ Function,+,furi_kernel_unlock,int32_t,
 Function,+,furi_log_get_level,FuriLogLevel,
 Function,-,furi_log_init,void,
 Function,+,furi_log_print_format,void,"FuriLogLevel, const char*, const char*, ..."
+Function,+,furi_log_print_raw_format,void,"FuriLogLevel, const char*, ..."
 Function,+,furi_log_set_level,void,FuriLogLevel
 Function,-,furi_log_set_puts,void,FuriLogPuts
 Function,-,furi_log_set_timestamp,void,FuriLogTimestamp
@@ -1287,7 +1288,7 @@ Function,+,gui_add_framebuffer_callback,void,"Gui*, GuiCanvasCommitCallback, voi
 Function,+,gui_add_view_port,void,"Gui*, ViewPort*, GuiLayer"
 Function,+,gui_direct_draw_acquire,Canvas*,Gui*
 Function,+,gui_direct_draw_release,void,Gui*
-Function,+,gui_get_framebuffer_size,size_t,Gui*
+Function,+,gui_get_framebuffer_size,size_t,const Gui*
 Function,+,gui_remove_framebuffer_callback,void,"Gui*, GuiCanvasCommitCallback, void*"
 Function,+,gui_remove_view_port,void,"Gui*, ViewPort*"
 Function,+,gui_set_lockdown,void,"Gui*, _Bool"
@@ -1301,9 +1302,9 @@ Function,+,hmac_sha256_init,void,"hmac_sha256_context*, const uint8_t*"
 Function,+,hmac_sha256_update,void,"const hmac_sha256_context*, const uint8_t*, unsigned"
 Function,+,icon_animation_alloc,IconAnimation*,const Icon*
 Function,+,icon_animation_free,void,IconAnimation*
-Function,+,icon_animation_get_height,uint8_t,IconAnimation*
-Function,+,icon_animation_get_width,uint8_t,IconAnimation*
-Function,+,icon_animation_is_last_frame,_Bool,IconAnimation*
+Function,+,icon_animation_get_height,uint8_t,const IconAnimation*
+Function,+,icon_animation_get_width,uint8_t,const IconAnimation*
+Function,+,icon_animation_is_last_frame,_Bool,const IconAnimation*
 Function,+,icon_animation_set_update_callback,void,"IconAnimation*, IconAnimationCallback, void*"
 Function,+,icon_animation_start,void,IconAnimation*
 Function,+,icon_animation_stop,void,IconAnimation*
@@ -1352,7 +1353,7 @@ Function,-,ldiv,ldiv_t,"long, long"
 Function,-,llabs,long long,long long
 Function,-,lldiv,lldiv_t,"long long, long long"
 Function,+,loader_get_pubsub,FuriPubSub*,Loader*
-Function,+,loader_is_locked,_Bool,Loader*
+Function,+,loader_is_locked,_Bool,const Loader*
 Function,+,loader_lock,_Bool,Loader*
 Function,+,loader_show_menu,void,
 Function,+,loader_start,LoaderStatus,"Loader*, const char*, const char*"
@@ -1570,11 +1571,11 @@ Function,+,saved_struct_save,_Bool,"const char*, void*, size_t, uint8_t, uint8_t
 Function,-,scanf,int,"const char*, ..."
 Function,+,scene_manager_alloc,SceneManager*,"const SceneManagerHandlers*, void*"
 Function,+,scene_manager_free,void,SceneManager*
-Function,+,scene_manager_get_scene_state,uint32_t,"SceneManager*, uint32_t"
+Function,+,scene_manager_get_scene_state,uint32_t,"const SceneManager*, uint32_t"
 Function,+,scene_manager_handle_back_event,_Bool,SceneManager*
 Function,+,scene_manager_handle_custom_event,_Bool,"SceneManager*, uint32_t"
 Function,+,scene_manager_handle_tick_event,void,SceneManager*
-Function,+,scene_manager_has_previous_scene,_Bool,"SceneManager*, uint32_t"
+Function,+,scene_manager_has_previous_scene,_Bool,"const SceneManager*, uint32_t"
 Function,+,scene_manager_next_scene,void,"SceneManager*, uint32_t"
 Function,+,scene_manager_previous_scene,_Bool,SceneManager*
 Function,+,scene_manager_search_and_switch_to_another_scene,_Bool,"SceneManager*, uint32_t"
@@ -1946,11 +1947,11 @@ Function,+,view_port_alloc,ViewPort*,
 Function,+,view_port_draw_callback_set,void,"ViewPort*, ViewPortDrawCallback, void*"
 Function,+,view_port_enabled_set,void,"ViewPort*, _Bool"
 Function,+,view_port_free,void,ViewPort*
-Function,+,view_port_get_height,uint8_t,ViewPort*
+Function,+,view_port_get_height,uint8_t,const ViewPort*
 Function,+,view_port_get_orientation,ViewPortOrientation,const ViewPort*
-Function,+,view_port_get_width,uint8_t,ViewPort*
+Function,+,view_port_get_width,uint8_t,const ViewPort*
 Function,+,view_port_input_callback_set,void,"ViewPort*, ViewPortInputCallback, void*"
-Function,+,view_port_is_enabled,_Bool,ViewPort*
+Function,+,view_port_is_enabled,_Bool,const ViewPort*
 Function,+,view_port_set_height,void,"ViewPort*, uint8_t"
 Function,+,view_port_set_orientation,void,"ViewPort*, ViewPortOrientation"
 Function,+,view_port_set_width,void,"ViewPort*, uint8_t"
diff --git a/firmware/targets/f7/api_symbols.csv b/firmware/targets/f7/api_symbols.csv
index 906ab357..33c443ae 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,+,13.1,,
+Version,+,14.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -607,7 +607,7 @@ Function,-,bzero,void,"void*, size_t"
 Function,-,calloc,void*,"size_t, size_t"
 Function,+,canvas_clear,void,Canvas*
 Function,+,canvas_commit,void,Canvas*
-Function,+,canvas_current_font_height,uint8_t,Canvas*
+Function,+,canvas_current_font_height,uint8_t,const Canvas*
 Function,+,canvas_draw_bitmap,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, const uint8_t*"
 Function,+,canvas_draw_box,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t"
 Function,+,canvas_draw_circle,void,"Canvas*, uint8_t, uint8_t, uint8_t"
@@ -624,18 +624,18 @@ Function,+,canvas_draw_str,void,"Canvas*, uint8_t, uint8_t, const char*"
 Function,+,canvas_draw_str_aligned,void,"Canvas*, uint8_t, uint8_t, Align, Align, const char*"
 Function,+,canvas_draw_triangle,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, CanvasDirection"
 Function,+,canvas_draw_xbm,void,"Canvas*, uint8_t, uint8_t, uint8_t, uint8_t, const uint8_t*"
-Function,+,canvas_get_font_params,CanvasFontParameters*,"Canvas*, Font"
+Function,+,canvas_get_font_params,const CanvasFontParameters*,"const Canvas*, Font"
 Function,+,canvas_glyph_width,uint8_t,"Canvas*, char"
-Function,+,canvas_height,uint8_t,Canvas*
+Function,+,canvas_height,uint8_t,const Canvas*
 Function,+,canvas_invert_color,void,Canvas*
 Function,+,canvas_reset,void,Canvas*
 Function,+,canvas_set_bitmap_mode,void,"Canvas*, _Bool"
 Function,+,canvas_set_color,void,"Canvas*, Color"
-Function,+,canvas_set_font,void,"Canvas*, Font"
 Function,+,canvas_set_custom_u8g2_font,void,"Canvas*, const uint8_t*"
+Function,+,canvas_set_font,void,"Canvas*, Font"
 Function,+,canvas_set_font_direction,void,"Canvas*, CanvasDirection"
 Function,+,canvas_string_width,uint16_t,"Canvas*, const char*"
-Function,+,canvas_width,uint8_t,Canvas*
+Function,+,canvas_width,uint8_t,const Canvas*
 Function,-,cbrt,double,double
 Function,-,cbrtf,float,float
 Function,-,cbrtl,long double,long double
@@ -1095,7 +1095,6 @@ Function,-,furi_hal_flash_write_dword,void,"size_t, uint64_t"
 Function,+,furi_hal_gpio_add_int_callback,void,"const GpioPin*, GpioExtiCallback, void*"
 Function,+,furi_hal_gpio_disable_int_callback,void,const GpioPin*
 Function,+,furi_hal_gpio_enable_int_callback,void,const GpioPin*
-Function,+,furi_hal_resources_get_ext_pin_number,int32_t,const GpioPin*
 Function,+,furi_hal_gpio_init,void,"const GpioPin*, const GpioMode, const GpioPull, const GpioSpeed"
 Function,+,furi_hal_gpio_init_ex,void,"const GpioPin*, const GpioMode, const GpioPull, const GpioSpeed, const GpioAltFn"
 Function,+,furi_hal_gpio_init_simple,void,"const GpioPin*, const GpioMode"
@@ -1249,6 +1248,7 @@ Function,+,furi_hal_region_is_frequency_allowed,_Bool,uint32_t
 Function,+,furi_hal_region_is_provisioned,_Bool,
 Function,+,furi_hal_region_set,void,FuriHalRegion*
 Function,-,furi_hal_resources_deinit_early,void,
+Function,+,furi_hal_resources_get_ext_pin_number,int32_t,const GpioPin*
 Function,-,furi_hal_resources_init,void,
 Function,-,furi_hal_resources_init_early,void,
 Function,+,furi_hal_rfid_change_read_config,void,"float, float"
@@ -1319,9 +1319,9 @@ Function,+,furi_hal_spi_bus_handle_deinit,void,FuriHalSpiBusHandle*
 Function,+,furi_hal_spi_bus_handle_init,void,FuriHalSpiBusHandle*
 Function,+,furi_hal_spi_bus_init,void,FuriHalSpiBus*
 Function,+,furi_hal_spi_bus_rx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, size_t, uint32_t"
-Function,+,furi_hal_spi_bus_trx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, uint8_t*, size_t, uint32_t"
+Function,+,furi_hal_spi_bus_trx,_Bool,"FuriHalSpiBusHandle*, const uint8_t*, uint8_t*, size_t, uint32_t"
 Function,+,furi_hal_spi_bus_trx_dma,_Bool,"FuriHalSpiBusHandle*, uint8_t*, uint8_t*, size_t, uint32_t"
-Function,+,furi_hal_spi_bus_tx,_Bool,"FuriHalSpiBusHandle*, uint8_t*, size_t, uint32_t"
+Function,+,furi_hal_spi_bus_tx,_Bool,"FuriHalSpiBusHandle*, const uint8_t*, size_t, uint32_t"
 Function,-,furi_hal_spi_config_deinit_early,void,
 Function,-,furi_hal_spi_config_init,void,
 Function,-,furi_hal_spi_config_init_early,void,
@@ -1578,7 +1578,7 @@ Function,+,gui_add_framebuffer_callback,void,"Gui*, GuiCanvasCommitCallback, voi
 Function,+,gui_add_view_port,void,"Gui*, ViewPort*, GuiLayer"
 Function,+,gui_direct_draw_acquire,Canvas*,Gui*
 Function,+,gui_direct_draw_release,void,Gui*
-Function,+,gui_get_framebuffer_size,size_t,Gui*
+Function,+,gui_get_framebuffer_size,size_t,const Gui*
 Function,+,gui_remove_framebuffer_callback,void,"Gui*, GuiCanvasCommitCallback, void*"
 Function,+,gui_remove_view_port,void,"Gui*, ViewPort*"
 Function,+,gui_set_lockdown,void,"Gui*, _Bool"
@@ -1621,9 +1621,9 @@ Function,+,ibutton_worker_write_set_callback,void,"iButtonWorker*, iButtonWorker
 Function,+,ibutton_worker_write_start,void,"iButtonWorker*, iButtonKey*"
 Function,+,icon_animation_alloc,IconAnimation*,const Icon*
 Function,+,icon_animation_free,void,IconAnimation*
-Function,+,icon_animation_get_height,uint8_t,IconAnimation*
-Function,+,icon_animation_get_width,uint8_t,IconAnimation*
-Function,+,icon_animation_is_last_frame,_Bool,IconAnimation*
+Function,+,icon_animation_get_height,uint8_t,const IconAnimation*
+Function,+,icon_animation_get_width,uint8_t,const IconAnimation*
+Function,+,icon_animation_is_last_frame,_Bool,const IconAnimation*
 Function,+,icon_animation_set_update_callback,void,"IconAnimation*, IconAnimationCallback, void*"
 Function,+,icon_animation_start,void,IconAnimation*
 Function,+,icon_animation_stop,void,IconAnimation*
@@ -1763,7 +1763,7 @@ Function,-,llround,long long int,double
 Function,-,llroundf,long long int,float
 Function,-,llroundl,long long int,long double
 Function,+,loader_get_pubsub,FuriPubSub*,Loader*
-Function,+,loader_is_locked,_Bool,Loader*
+Function,+,loader_is_locked,_Bool,const Loader*
 Function,+,loader_lock,_Bool,Loader*
 Function,+,loader_show_menu,void,
 Function,+,loader_start,LoaderStatus,"Loader*, const char*, const char*"
@@ -2372,11 +2372,11 @@ Function,-,scalbnl,long double,"long double, int"
 Function,-,scanf,int,"const char*, ..."
 Function,+,scene_manager_alloc,SceneManager*,"const SceneManagerHandlers*, void*"
 Function,+,scene_manager_free,void,SceneManager*
-Function,+,scene_manager_get_scene_state,uint32_t,"SceneManager*, uint32_t"
+Function,+,scene_manager_get_scene_state,uint32_t,"const SceneManager*, uint32_t"
 Function,+,scene_manager_handle_back_event,_Bool,SceneManager*
 Function,+,scene_manager_handle_custom_event,_Bool,"SceneManager*, uint32_t"
 Function,+,scene_manager_handle_tick_event,void,SceneManager*
-Function,+,scene_manager_has_previous_scene,_Bool,"SceneManager*, uint32_t"
+Function,+,scene_manager_has_previous_scene,_Bool,"const SceneManager*, uint32_t"
 Function,+,scene_manager_next_scene,void,"SceneManager*, uint32_t"
 Function,+,scene_manager_previous_scene,_Bool,SceneManager*
 Function,+,scene_manager_search_and_switch_to_another_scene,_Bool,"SceneManager*, uint32_t"
@@ -2895,11 +2895,11 @@ Function,+,view_port_alloc,ViewPort*,
 Function,+,view_port_draw_callback_set,void,"ViewPort*, ViewPortDrawCallback, void*"
 Function,+,view_port_enabled_set,void,"ViewPort*, _Bool"
 Function,+,view_port_free,void,ViewPort*
-Function,+,view_port_get_height,uint8_t,ViewPort*
+Function,+,view_port_get_height,uint8_t,const ViewPort*
 Function,+,view_port_get_orientation,ViewPortOrientation,const ViewPort*
-Function,+,view_port_get_width,uint8_t,ViewPort*
+Function,+,view_port_get_width,uint8_t,const ViewPort*
 Function,+,view_port_input_callback_set,void,"ViewPort*, ViewPortInputCallback, void*"
-Function,+,view_port_is_enabled,_Bool,ViewPort*
+Function,+,view_port_is_enabled,_Bool,const ViewPort*
 Function,+,view_port_set_height,void,"ViewPort*, uint8_t"
 Function,+,view_port_set_orientation,void,"ViewPort*, ViewPortOrientation"
 Function,+,view_port_set_width,void,"ViewPort*, uint8_t"
diff --git a/firmware/targets/f7/furi_hal/furi_hal_spi.c b/firmware/targets/f7/furi_hal/furi_hal_spi.c
index 8dba8327..42b85479 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_spi.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_spi.c
@@ -103,7 +103,7 @@ bool furi_hal_spi_bus_rx(
 
 bool furi_hal_spi_bus_tx(
     FuriHalSpiBusHandle* handle,
-    uint8_t* buffer,
+    const uint8_t* buffer,
     size_t size,
     uint32_t timeout) {
     furi_assert(handle);
@@ -128,7 +128,7 @@ bool furi_hal_spi_bus_tx(
 
 bool furi_hal_spi_bus_trx(
     FuriHalSpiBusHandle* handle,
-    uint8_t* tx_buffer,
+    const uint8_t* tx_buffer,
     uint8_t* rx_buffer,
     size_t size,
     uint32_t timeout) {
diff --git a/firmware/targets/furi_hal_include/furi_hal_spi.h b/firmware/targets/furi_hal_include/furi_hal_spi.h
index 79e80931..af15a883 100644
--- a/firmware/targets/furi_hal_include/furi_hal_spi.h
+++ b/firmware/targets/furi_hal_include/furi_hal_spi.h
@@ -85,7 +85,7 @@ bool furi_hal_spi_bus_rx(
  */
 bool furi_hal_spi_bus_tx(
     FuriHalSpiBusHandle* handle,
-    uint8_t* buffer,
+    const uint8_t* buffer,
     size_t size,
     uint32_t timeout);
 
@@ -101,7 +101,7 @@ bool furi_hal_spi_bus_tx(
  */
 bool furi_hal_spi_bus_trx(
     FuriHalSpiBusHandle* handle,
-    uint8_t* tx_buffer,
+    const uint8_t* tx_buffer,
     uint8_t* rx_buffer,
     size_t size,
     uint32_t timeout);