I have 2 DSs and 2 M3DS Real, bought at different times from Ozmodchips. Both using transcend 8bg microsd hc cards, loaded with the same games. Cart 1 works in either DS, with either microsd card. works perfectly. Cart 2 will load sakura, but when i select a game, it shows "reboot progress" and goes to 2 black screens. Tested this with both DS and both microsd cards. To date, I have: reformatted both cards and redone the files on them tried the triple boot - I can use it, but games won't play shim outside the cart shim inside the cart banging my head against the wall in frustration (this last didn't really help!) To the same results: I can see a list of the games, but I cannot play them. I get double black screens every time.