QGC doesn't connect to FC

Ground Control Software QGroundControl
1

I’ve used BetaFlight and decided to switch to ArduPilot.

  1. I’ve made backup of betaflight FW using STM32Cube (How to Backup Flight Controller Using STM32CubeProgrammer (Saving Firmware and Config) - Oscar Liang)
  2. Downloaded fw (I have SpeedyBee F405 V3 BLS 60A 30x30 Stack) ArduPilot firmware : /Copter/stable-4.5.2/speedybeef4v3
  3. followed these steps Loading Firmware onto boards without existing ArduPilot firmware — Copter documentation
  4. Installed and started QGC, connected FC via USB, QGC in disconnected state
  5. created a comm link, see image
    Screenshot from 2024-05-16 10-48-46
    Screenshot from 2024-05-16 10-48-46909×763 69.5 KB
    , pressed connect, still in disconnected state
  6. checked LinkManagerVerboseLog (Vehicle Connection Problems | QGC Guide (master)), looks like hardware is not recognized
    qgc-log.txt (79.5 KB)

Edit:
I’ve noticed that flashed bytes in device memory not fully match FW file

Screenshot from 2024-05-16 15-53-01
Screenshot from 2024-05-16 15-53-013326×478 59.4 KB

Screenshot from 2024-05-16 15-53-05
Screenshot from 2024-05-16 15-53-053326×478 58.3 KB

2

output from Stm32Programmer CLI
stm32-log.txt (1.5 KB)

For some reason writing to STM32 memory doesn’t work

3

Was able to properly install firmware using betaflight instead of STM32Programmer Loading Firmware onto boards without existing ArduPilot firmware — Copter documentation
It’s also necessary to specify your board, otherwise betaflight won’t start the process.