Just to add to this, I’ve also tried this, changing the button keys for the nes emulator for a better gaming experience. (I’ve no issue getting any of the emu working on any other system – even the C64! but just never changed the keys to something other than default.)
Tried changing the the keys in “/opt/retropie/configs/all/retroarch.cfg”
and also “/opt/retropie/configs/nes/retroarch.cfg”
I also noted from a comment on Floob video regarding having the key input lines before the #include line (originally on line 1) and inserting them before this #include. Still no joy in getting the buttons as I like them.
I’ll be trying out beta 3, to see if this sorts this issue.
p.s – Floob? thank you for all you excellent videos btw really great help on all things retropie :)