I have had the retro pie 3 running emulation station for a week. I have no idea what I am doing. I got overconfident when I managed to get wifi to work.
So in an attempt to get bluetooth audio working I upgraded bluetooth something something from some instructions on the internet.
Now emulation station sometimes hangs on a black screen and I can’t use F4 to get to command line.
Anyway, I just want to revert my SD card to the way it was when my kit arrived.
Apart from that it is excellent. If you can help me out I promise to be more careful in the future!