Bump! I’ve not switched to Retropie v2 yet so perhaps the core option is there now? anyone? I’ll have more time this weekend to check that by myself if I got no answer

EDIT: ok I’ve switched to Retropie 2 and I confirm it still not possible to select region under retroarch/picodrive core options… I’ll try to compile the picodrive core by myself but I trust petrock did everything properly so I’m afraid there is no solution to address this yet. Perhaps with the next retroarch release? wait & see :)