diff --git a/build.sh b/build.sh
index 2b7c4824..313c4c47 100755
--- a/build.sh
+++ b/build.sh
@@ -64,6 +64,8 @@ case $1 in
     ;;
 esac
 
+# cache project config json for use in get_platform_for_env()
+PIO_CONFIG_JSON=$(pio project config --json-output)
 
 # $1 should be the string to find (case insensitive)
 get_pio_envs_containing_string() {
@@ -87,6 +89,25 @@ get_pio_envs_ending_with_string() {
   done
 }
 
+# get platform flag for a given environment
+# $1 should be the environment name
+get_platform_for_env() {
+  local env_name=$1
+  echo "$PIO_CONFIG_JSON" | python3 -c "
+import sys, json, re
+data = json.load(sys.stdin)
+for section, options in data:
+    if section == 'env:$env_name':
+        for key, value in options:
+            if key == 'build_flags':
+                for flag in value:
+                    match = re.search(r'(ESP32_PLATFORM|NRF52_PLATFORM|STM32_PLATFORM|RP2040_PLATFORM)', flag)
+                    if match:
+                        print(match.group(1))
+                        sys.exit(0)
+"
+}
+
 # disable all debug logging flags if DISABLE_DEBUG=1 is set
 disable_debug_flags() {
   if [ "$DISABLE_DEBUG" == "1" ]; then
@@ -96,6 +117,8 @@ disable_debug_flags() {
 
 # build firmware for the provided pio env in $1
 build_firmware() {
+  # get env platform for post build actions
+  ENV_PLATFORM=($(get_platform_for_env $1))
 
   # get git commit sha
   COMMIT_HASH=$(git rev-parse --short HEAD)
@@ -126,27 +149,31 @@ build_firmware() {
   # build firmware target
   pio run -e $1
 
-  # build merge-bin for esp32 fresh install
-  if [ -f .pio/build/$1/firmware.bin ]; then
+  # build merge-bin for esp32 fresh install, copy .bins to out folder (e.g: Heltec_v3_room_server-v1.0.0-SHA.bin)
+  if [ "$ENV_PLATFORM" == "ESP32_PLATFORM" ]; then
     pio run -t mergebin -e $1
+    cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}.bin 2>/dev/null || true
+    cp .pio/build/$1/firmware-merged.bin out/${FIRMWARE_FILENAME}-merged.bin 2>/dev/null || true
   fi
 
-  # build .uf2 for nrf52 boards
-  if [[ -f .pio/build/$1/firmware.zip && -f .pio/build/$1/firmware.hex ]]; then
+  # build .uf2 for nrf52 boards, copy .uf2 and .zip to out folder (e.g: RAK_4631_Repeater-v1.0.0-SHA.uf2)
+  if [ "$ENV_PLATFORM" == "NRF52_PLATFORM" ]; then
     python3 bin/uf2conv/uf2conv.py .pio/build/$1/firmware.hex -c -o .pio/build/$1/firmware.uf2 -f 0xADA52840
+    cp .pio/build/$1/firmware.uf2 out/${FIRMWARE_FILENAME}.uf2 2>/dev/null || true
+    cp .pio/build/$1/firmware.zip out/${FIRMWARE_FILENAME}.zip 2>/dev/null || true
   fi
 
-  # copy .bin, .uf2, and .zip to out folder
-  # e.g: Heltec_v3_room_server-v1.0.0-SHA.bin
-  # e.g: RAK_4631_Repeater-v1.0.0-SHA.uf2
+  # for stm32, copy .bin and .hex to out folder
+  if [ "$ENV_PLATFORM" == "STM32_PLATFORM" ]; then
+    cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}.bin 2>/dev/null || true
+    cp .pio/build/$1/firmware.hex out/${FIRMWARE_FILENAME}.hex 2>/dev/null || true
+  fi
 
-  # copy .bin for esp32 boards
-  cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}.bin 2>/dev/null || true
-  cp .pio/build/$1/firmware-merged.bin out/${FIRMWARE_FILENAME}-merged.bin 2>/dev/null || true
-
-  # copy .zip and .uf2 of nrf52 boards
-  cp .pio/build/$1/firmware.uf2 out/${FIRMWARE_FILENAME}.uf2 2>/dev/null || true
-  cp .pio/build/$1/firmware.zip out/${FIRMWARE_FILENAME}.zip 2>/dev/null || true
+  # for rp2040, copy .bin and .uf2 to out folder
+  if [ "$ENV_PLATFORM" == "RP2040_PLATFORM" ]; then
+    cp .pio/build/$1/firmware.bin out/${FIRMWARE_FILENAME}.bin 2>/dev/null || true
+    cp .pio/build/$1/firmware.uf2 out/${FIRMWARE_FILENAME}.uf2 2>/dev/null || true
+  fi
 
 }
 
diff --git a/examples/companion_radio/MyMesh.h b/examples/companion_radio/MyMesh.h
index ff549771..1c5813eb 100644
--- a/examples/companion_radio/MyMesh.h
+++ b/examples/companion_radio/MyMesh.h
@@ -8,11 +8,11 @@
 #define FIRMWARE_VER_CODE 9
 
 #ifndef FIRMWARE_BUILD_DATE
-#define FIRMWARE_BUILD_DATE "29 Jan 2026"
+#define FIRMWARE_BUILD_DATE "15 Feb 2026"
 #endif
 
 #ifndef FIRMWARE_VERSION
-#define FIRMWARE_VERSION "v1.12.0"
+#define FIRMWARE_VERSION "v1.13.0"
 #endif
 
 #if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 0f302e80..22044113 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -151,6 +151,14 @@ class HomeScreen : public UIScreen {
     // fill the battery based on the percentage
     int fillWidth = (batteryPercentage * (iconWidth - 4)) / 100;
     display.fillRect(iconX + 2, iconY + 2, fillWidth, iconHeight - 4);
+
+    // show muted icon if buzzer is muted
+#ifdef PIN_BUZZER
+    if (_task->isBuzzerQuiet()) {
+      display.setColor(DisplayDriver::RED);
+      display.drawXbm(iconX - 9, iconY + 1, muted_icon, 8, 8);
+    }
+#endif
   }
 
   CayenneLPP sensors_lpp;
diff --git a/examples/companion_radio/ui-new/UITask.h b/examples/companion_radio/ui-new/UITask.h
index 09a286df..5c3c2956 100644
--- a/examples/companion_radio/ui-new/UITask.h
+++ b/examples/companion_radio/ui-new/UITask.h
@@ -95,6 +95,14 @@ public:
   bool hasDisplay() const { return _display != NULL; }
   bool isButtonPressed() const;
 
+  bool isBuzzerQuiet() { 
+#ifdef PIN_BUZZER
+    return buzzer.isQuiet();
+#else
+    return true;
+#endif
+  }
+
   void toggleBuzzer();
   bool getGPSState();
   void toggleGPS();
diff --git a/examples/companion_radio/ui-new/icons.h b/examples/companion_radio/ui-new/icons.h
index 5220f409..cbe23790 100644
--- a/examples/companion_radio/ui-new/icons.h
+++ b/examples/companion_radio/ui-new/icons.h
@@ -115,4 +115,8 @@ static const uint8_t advert_icon[] = {
 0x38, 0x00, 0x00, 0x1C, 0x18, 0x00, 0x00, 0x18, 0x0C, 0x00, 0x00, 0x30,
 0x04, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const uint8_t muted_icon[] = {
+  0x20, 0x6a, 0xea, 0xe4, 0xe4, 0xea, 0x6a, 0x20
 };
\ No newline at end of file
diff --git a/examples/simple_repeater/MyMesh.h b/examples/simple_repeater/MyMesh.h
index 7a51b4a9..8388e29c 100644
--- a/examples/simple_repeater/MyMesh.h
+++ b/examples/simple_repeater/MyMesh.h
@@ -69,11 +69,11 @@ struct NeighbourInfo {
 };
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "29 Jan 2026"
+  #define FIRMWARE_BUILD_DATE   "15 Feb 2026"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.12.0"
+  #define FIRMWARE_VERSION   "v1.13.0"
 #endif
 
 #define FIRMWARE_ROLE "repeater"
diff --git a/examples/simple_room_server/MyMesh.h b/examples/simple_room_server/MyMesh.h
index b4529e77..d21e225f 100644
--- a/examples/simple_room_server/MyMesh.h
+++ b/examples/simple_room_server/MyMesh.h
@@ -26,11 +26,11 @@
 /* ------------------------------ Config -------------------------------- */
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "29 Jan 2026"
+  #define FIRMWARE_BUILD_DATE   "15 Feb 2026"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.12.0"
+  #define FIRMWARE_VERSION   "v1.13.0"
 #endif
 
 #ifndef LORA_FREQ
diff --git a/examples/simple_sensor/SensorMesh.h b/examples/simple_sensor/SensorMesh.h
index 4bc0d784..7131db75 100644
--- a/examples/simple_sensor/SensorMesh.h
+++ b/examples/simple_sensor/SensorMesh.h
@@ -33,11 +33,11 @@
 #define PERM_RECV_ALERTS_HI    (1 << 7)   // high priority alerts
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "29 Jan 2026"
+  #define FIRMWARE_BUILD_DATE   "15 Feb 2026"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.12.0"
+  #define FIRMWARE_VERSION   "v1.13.0"
 #endif
 
 #define FIRMWARE_ROLE "sensor"
diff --git a/platformio.ini b/platformio.ini
index 69883271..c47e757e 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -59,6 +59,7 @@ platform = platformio/espressif32@6.11.0
 monitor_filters = esp32_exception_decoder
 extra_scripts = merge-bin.py
 build_flags = ${arduino_base.build_flags}
+  -D ESP32_PLATFORM
 ;  -D ESP32_CPU_FREQ=80          ; change it to your need
 build_src_filter = ${arduino_base.build_src_filter}
 
diff --git a/src/helpers/esp32/SerialBLEInterface.cpp b/src/helpers/esp32/SerialBLEInterface.cpp
index eccfeca6..dcfa0e1e 100644
--- a/src/helpers/esp32/SerialBLEInterface.cpp
+++ b/src/helpers/esp32/SerialBLEInterface.cpp
@@ -1,4 +1,5 @@
 #include "SerialBLEInterface.h"
+#include "esp_mac.h"
 
 // See the following for generating UUIDs:
 // https://www.uuidgenerator.net/
diff --git a/variants/m5stack_unit_c6l/platformio.ini b/variants/m5stack_unit_c6l/platformio.ini
index bbfdb4a1..a2b8b087 100644
--- a/variants/m5stack_unit_c6l/platformio.ini
+++ b/variants/m5stack_unit_c6l/platformio.ini
@@ -5,7 +5,7 @@ board_build.partitions = min_spiffs.csv ; get around 4mb flash limit
 build_flags =
   ${esp32c6_base.build_flags}
   ${sensor_base.build_flags}
-  -I variants/M5Stack_Unit_C6L
+  -I variants/m5stack_unit_c6l
   -D P_LORA_TX_LED=15
   -D P_LORA_SCLK=20
   -D P_LORA_MISO=22
diff --git a/variants/wio-tracker-l1/platformio.ini b/variants/wio-tracker-l1/platformio.ini
index 75651d69..da760b51 100644
--- a/variants/wio-tracker-l1/platformio.ini
+++ b/variants/wio-tracker-l1/platformio.ini
@@ -96,6 +96,8 @@ build_flags = ${WioTrackerL1.build_flags}
   -D PIN_BUZZER=12
   -D QSPIFLASH=1
   -D ADVERT_NAME='"@@MAC"'
+  -D ENV_PIN_SDA=PIN_WIRE1_SDA
+  -D ENV_PIN_SCL=PIN_WIRE1_SCL
   ; -D MESH_PACKET_LOGGING=1
   ; -D MESH_DEBUG=1
 build_src_filter = ${WioTrackerL1.build_src_filter}