My nephew has a M3 real and so do I. I bought one before I got his and it has the sd slot on the top and that one still works fine, but my Nephews m3 real which I bought afterwords which has the sd slot on the side wont read anymore. Its been a decreasing type of thing as its had problems where I would even put a piece of paper on the back of the card after I inserted it in the DS. And that would help it read, but right now that wont even work. Ive tried both cards on both our DS's and mines reads on both while his wont read on either. Anything I can do? I kinda remember hearing about some cards you can open and like insert a paper inside a card, but I don't know if thats possible with this M3 card. Anything I can do to help it read it?