Reply To: Hotkey Select + Start opens UNIBIOS instead of exit

Thats different to mine. Try this

pifba="/opt/retropie/emulators/pifba/fba2x %ROM%"
default="lr-fba"
lr-fba="/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-fba/fb_alpha_libretro.so --config /opt/retropie/configs/fba/retroarch.cfg %ROM%"

If you have a spare SD card you could also try writing the beta 4 image to it and just try our libretro-fba and see if it works for you.