I noticed when I change the filename of a GBA rom and change the savefilename .dat the same, the M3 doesn't recognize the savefile anymore and all is gone . Is there a way to change the name without losing the savedata? The content of the save file gets resetted. The save file works, but every progress which is saved in the game is gone. As if it's using a new save file. So how can I change the savefilename without losing the content? If I change it back everything is back again?!? but I really want to change the name.