I've had probably every problem under the sun, but this is new. For whatever reason, I can only play one Rom. If I want to change it, I have to reformat the TF and put a different ROM. I tried it with Metroid Prime, and it worked. I added Dragon Ball Z, and that worked, but Metroid didn't. Why is this? I'm betting it's the SD. I bought it on Ebay, and it looked legit because of the Kingston packaging, but when I got it, it was taped to a small piece of cardboard.