When flashing Betaflight/INAV firmware or Ardupilot/PX4 Bootloader, the flight controller needs to enter DFU mode.
Entering DFU Mode #
To put the board into DFU mode, simply hold the BOOT button pressed and then connect it to the PC using a USB cable to power up the board.
Installing the DFU Driver (Windows) #
The easiest way to Installing the DFU driver that is to use the Zadig:
- Open Zadig
- Choose Options -> List All Devices
- Select STM32 BOOTLOADER (F405) or DFU in FS Mode (H743)
- Choose WinUSB in the right hand box
- Click Replace Driver (It shows “Reinstall Driver” here is because the driver has already been installed)
- Now the STM32 BOOTLOADER or DFU in FS Mode should be listed in your Windows Device Manager
