#2569
petrockblog
Keymaster

To use the RetroPi GPIO Adapter you just need to enable SNESDev via the RetroPie Setup Script that also comes with the SD-card image.

With respect to updating an existing installation have a look at https://github.com/retropie/RetroPie-Setup/wiki/How-to-Update-an-Existing-RetroPie-Installation.