I had the same...
To fix it I had to set the keyboard layout (in Debian) back to UK English, (I had changed it to US earlier) then re-do part 2 of the flashing procedure and luckily after that everything was fine again.
Scared me though, I thought I had broken it
To fix it I had to set the keyboard layout (in Debian) back to UK English, (I had changed it to US earlier) then re-do part 2 of the flashing procedure and luckily after that everything was fine again.
Scared me though, I thought I had broken it