Well I have a black european one and it came on like 5.x.x iirc, i believe the American Black 3ds XL comes on 6.x.x and the DSTWO supports the newest Firmware so i'm quite sure you're good.
@Veho, Sounds and smells like bullshit. They don't give you cancer, and California should know that. I don't get why they stick labels that say "may or may not cause reproductive harm or cancer".
I swear like 99% of arcade games wouldn't even exist these days outside of MAME the arcade machines are old and busted very few ever saw any sort of home conversion
I mean if a company could use AI to do the work of a home conversion for essentially free why not? The rights for some games are completely lost though