I messed up my C52 control board while testing. Uploaded S19 firmware and now it’s useless for testing... Is there a way to roll it back to S17/T17? I tried copying S17+ to the SD card but that didn't work. Can I use flasherase and writenand commands if I get ssh access to the board?
Thanks for any advice!
Have you looked into other firmware options to recover the original? You might wanna bypass the signature check by trying different versions. Check this guide I found, it might help with recovery.
If that fails, consider testing Braiins or Vnish firmware. Even the test firmware from your seller could work. If all else fails, flashing via pinouts is your last shot, but there's no solid guide for that. Try this old method below and see if it helps.