Remap msys2 usb, fix USB port detection #2301
The COM port is correct (COM10), but ... the command is apparently prepending the MSYS path.
Also, just testing it, the AVRDUDE binary gets downloaded in such a way that only the MINGW64 command line works. The MSYS command line doesn't see the EXE.
Yeah, the AVRDUDE binary is only available in the MINGW64 shell when installed via pacman. You might want to try updating your version of MSYS, most people I've talked to have this version in /proc/version:
Confirmed that these changes fix the issue with MSYS/Windows, and flash properly.
The only caveat now is that you have avrdude installed somewhere accessible.
And it looks like the official source/site for that is: