Hello, I'm new to the topic of flashcards. I bought a new N3DSXL (it will arrive in a few days) and I think it has got installed a recent firmware - maybe v10.2 or something like that. I dunno yet. I've found a guide for downgrading the newer firmware versions to v9.2. I wanna buy and use the flashcard DSTwo+ in order to play NDS and 3DS games, too. However, the functionality of being able to play 3DS games requires the firmware not to be older then v9.2 (is that information right?), but newer versions of the firmware do support NDS games. Therefore I'd like to downgrade my N3DSXL. So the question is: Does the DSTwo+ flashcard work, if I could downgrade my Nintendo to v9.2? Thx!