Basically, I have a sandisk 4GB class 2, and The problem is that any changes made to the data is reversed as soon as I reset my DS or unplug and replug it into my computer, I can still play games and stuff. I can't format it due to an error of a folder which only has a corrupted pokemon emerald save, and if I try to delete every thing I can't delete said folder and everything resets afterward. Would formatting with a cell phone help at all? Or should I try to get a new card or something. Please advise.