I put the SD card in my computer and all I did was download this nitro hax cheat file and then there was another file in the folder that I just made called something like USBC@%Á i try deleting it and it wont let me, and now its saying i need to format my sdcard and my 3ds wont read it, im really scared because i had hundreds of hours worth of pokemon save files on there and if i cant recover this then i wil be very very sad, any help is GREATLEY APPRICIATED