I bought it last year and was using it until I decided to update so I could play Pokemon Y. I knew taht updating will cause it not to work but I wasn't interested in using the card for many months (as can be seen by how long I took to try it again). I downloaded the latest firmware and EOS version to the correct places, then put the card back in my 3DS and tried it but it still doesn't work. I get a black screen with white text telling me it doesn't work. Any help? It should be noted that I only have a 3DS as of now and I updated the 3DS before updating the DSTWO firmware. Should I find an older DS version, such as a DS Lite, and try it that way? If so, how do I do that with it? I'm on 3DS version 7.1.0-16E, by the way.