diff --git a/ArduPlane/ReleaseNotes.txt b/ArduPlane/ReleaseNotes.txt
index c98df645d7..902a02a609 100644
--- a/ArduPlane/ReleaseNotes.txt
+++ b/ArduPlane/ReleaseNotes.txt
@@ -1,3 +1,7 @@
+Release 5.0.0-beta3 21st Dec 2023
+------------------------------
+ - Updated default CarbonixCubeOrange Param
+
 Release 5.0.0-beta2 15th Dec 2023
 ------------------------------
  - AP_Periph: fix arm_update_status missing update
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCubeOrange/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCubeOrange/hwdef.dat
index 0037eaf07d..e51c834226 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCubeOrange/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCubeOrange/hwdef.dat
@@ -2,7 +2,7 @@
 
 include ../CubeOrange/hwdef.dat
 
-define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta2"
+define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta3"
 
 undef HAL_NAVEKF3_AVAILABLE
 undef HAL_NAVEKF2_AVAILABLE
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixF405/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixF405/hwdef.dat
index 61a6ba9351..458186bed6 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixF405/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixF405/hwdef.dat
@@ -19,7 +19,7 @@ env AP_PERIPH 1
 # crystal frequency set to 0 to use internal clock; currently configured for external crystal 12MHZ
 OSCILLATOR_HZ 12000000
 
-define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta2"
+define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta3"
 
 #MCU F405 Flash 1024
 FLASH_SIZE_KB 1024
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixL496/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixL496/hwdef.dat
index 4b65bf726d..563a8981da 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixL496/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixL496/hwdef.dat
@@ -21,7 +21,7 @@ env AP_PERIPH 1
 # crystal frequency
 OSCILLATOR_HZ 12000000
 
-define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta2"
+define AP_CUSTOM_FIRMWARE_STRING "CarboPilot V5.0.0-beta3"
 
 # assume the 256k flash part
 FLASH_SIZE_KB 256