Hi all, I just lost everything...all of my files, pictures, videos, documents, games "ALL OF IT" after having installed and played super smash bros. clash. The things i had on that card took months upon months to assimilate and some documents where important like my tax return info and now it is "all" gone. What I have left are 3 annoying as @%^&+ mystery files named BM6@, hé8êá@hé.@hÉ, and @hÉ@hÉ@h.É8ê.
I'm guessing that the amount of data you had on the card before was relatively small, and smash clas is quite a big game?
I'm afraid it sounds like you may have a fake SD card. Once you've tried all the recovery options, Download H2testw to establish if it's fake (H2testW will overwrite all your data so it will render recovery solutions useless).
If it is a fake then I'm afraid the data is lost for good