just to let you know a simple way to flash F405 based boards with APM fw:
you can use the Firmare utility integrated in the Betaflight/Cleanflight/Inav configurators
Choose “Load local firmware” and flash!!!
Easy as 123!!!
just my 2 cents
And if you flash the hex with _bl in the name, you can incrementally flash from Mission Planner from there on out.
I have done this successfully per the message on iNav, but can’t connect to the board.
I have a F405 Wing and no devices connected, Just trying to get started and connecting via the USB cable.
I used iNav to load the firmware with BL. The Blue LED flashed but can’t connect.
Any ideas of what I should do?
Thanks for any help!