I have 4.4.0-10U firmware and a R4iGold. I'm trying to get Nemeses in the EUR Bravely Default. Is there a way I can do this by setting up a local streetpass relay or whatnot and not lose my ability to play ROMs due to updating the firmware? And if so how can I do it? I want to battle some Nemeses in Bravely Default but don't want to lose what I have.