a strange thing happened,
a build just finished, FC Hakrc mini F4, betaflight almost all configured, RX, OSD, VTX etc ... test with LIPO ok,
I wanted to remap the engines so as not to take everything apart.
I enter CLI, I put an output engine in NONE, SAVE... end of games ...

I disconnect and reattach the usb ... nothing ...
I wait a little longer and windows says usb not recognized ... mmmm
I try to reflash ... boot key , connect usb, nothing!
I disconnect all the wires and do various tests but nothing.

I think the micro died of natural causes, has it ever happened to anyone?


it was so cute !!!!!!  and he never flew
like alpharc frames

Try a different USB cable.

eh maybe that was it, the FC just doesn't start. however I also tried other cable, and other FCs to see if it was the PC.
I'm testing directly without USB, via st-link just to understand what it can be.

Try all of the USB ports on your computer. I had some not wanting to work with BF even after I used that very port in BF.

st-link, soldered directly on the FC it worked,
through it I erase everything and I could reflash.
However i doubt the problem is software only.