would like some info on flash cards for dsi/3ds if i get one and obviously use it once i take it out does everything work as if i never put one in? i know the basics but not that. thanks
Yup. Flashcards don't change anything on the DS(i)/3DS. Well, they leave a trace on the 3DS, just like any other game. However, considering they spoof a real game, Nintendo will never know whether you've used a flashcard or the game that the flashcard spoofed.
Get a flashcard (DSTwo, acekard 2i, r4i gold), download the official latest firmware, out the firmware and some games in the sd card, put the flashcard and sd card in the DSi/3DS, power on and play games. take out the flashcard, back to a new 3DS again. the real 3DS flashcard which can play 3SD games won't come out in short time. that's for sure.
lois i have told you 3ds roms dont work as yet no mater what country! if 3d roms work it would be big news and posted over every forum. sorry to let ya down but your sh*t out of luck like the rest of us. x