Mutex
Participant
Post count: 61

Its actually not that complicated

just add

input_player1_a_btn=""
input_player1_b_btn=""
input_player1_x_btn=""
input_player1_y_btn=""

to your /opt/retropie/configs/%system%/retroarch.cfg
(for snes /opt/retropie/configs/snes/retroarch.cfg)

That overwrites the button layout for the first player.
For the second player you have to obviously replace the 1 with a 2.

And of course you have to add the corresponding button number in between the quotation marks.