I sent them an email saying the card was faulty and it did not work on my 3DS as they claimed. I hope to hear something soon. Overall I'm very disappointed in this card. If it works then awesome but many people have been having problems out of these DSTWOs. I just hope they understand that it was faulty and they would send me a replacement. Just sucks I gotta wait longer to play games on my 3DS. lame!!!!!