Hi I bought a DS lite today, because my old one wasnt working too well. I got a brand new gray DS lite, and my M3DS Real wont work on it. Though it does work my older DS lite. Any ideas.
M3's sometimes need the 'paper slip trick' as they're just slightly too thin for many DSlite slots. Take either a thick piece of paper or thin paper folded in half once and press it against the M3's label as you insert it into the console. This will insure that the contact points are touching properly.