Nintendofreak, I'm only going to refute you're logic. Tomobobo is saying that "a flashed DS cannot send
some single-card wireless multiplayer games." You then say that's not true, but then say you have trouble sending New Super Mario Brothers. Therefore, you do indeed have trouble with
some single-card wireless mutilplayer games with your flashed ds. The only question left is why, but you don't give any evidence to support your claim that the reason isn't because you flashed your ds. But answering the following questions might shed some light:
1) Did you try hosting a game using a NewSMB
ROM with an
unflashed ds but using a passkey. Did that work?
2) Did you try hosting a game using a NewSMB
CART with a flashed ds. Did that work?
3) Did you try hosting a game using a NewSMB
CART with an unflashed 100 percent stock ds? (This is a control to make sure the issue isn't interference where you were playing, or you were setting up the game wrong, or some other unknown factor).
I'm sorry for busting your balls, but I'm confused myself and need answers. Please see
http://gbatemp.net/index.php?act=ST&f=27&t...ndpost&p=446730