I have a broken dsi which doesnt read ANY game cards. I emailed nintendo and they suggest calling and setting up a way to send it in. Ive used a R4i on it a lot and that may be the reason it broke in the first place? But I dont think so, it worked great and seemed to be a legit card (i read some stuff they they can break the game card slot or whatever) I have tried the paper trick which doesnt work, i sprayed compressed air in it, still nothing. If i send it in, can they see I used a r4i on it? If they find out, what do they do?