10.4 emunand.
old3ds
didn't work on 10.3 either.
i got it sorted tho had him download reinand mod for o3ds
- screen gives the generic error has occured turn system off.
I read it has to do with firmlaunch(mh4,smash, etc) if this isn't patched then it can't load larger ram games like those. and the reinand mod loads a patch for it. so it works