Compiling bootloader from source issues

[davidkhan]

Hello , this is first time i am posting and not sure the right place.

I have flight controller boards
MicoAir743 ardupilot/libraries/AP_HAL_ChibiOS/hwdef/MicoAir743/hwdef.dat at master · ArduPilot/ardupilot · GitHub

MicoAir405v2 ardupilot/libraries/AP_HAL_ChibiOS/hwdef/MicoAir405v2/hwdef.dat at master · ArduPilot/ardupilot · GitHub

Pixhawk6C MINI ardupilot/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk6C/hwdef.dat at master · ArduPilot/ardupilot · GitHub

I was trying to build bootloader on my MacOS machine , all compile ok and even .bin sizes are same. I use STM32CubeProgrammer , full erase and upload , but doesn't work.
Doesn’t work i mean , no led flashing , no hardware discovery on my windows and MAC.
Though it could be build system , I tried on my linux ubuntu 24 machine and upload , but still the same.

I tried to build bootloaders for all board and tested and none of the board work.
I have attached 2 bootloaders , one is my build and other one is original.
***** Please note all original bootloaders under ardupilot/Tools/bootloaders at master · ArduPilot/ardupilot · GitHub are working fine. and i tried from latest sources and older as well*******

Any idea what it could be and have anybody same issues?

Regards,
David

BOOTLOADER.zip