Hello! I'm quite new to the world of flashcarts, this one I had came with the o3ds I bought from a pawn shop around 5 years ago, issue is few days ago I inserted the SD it came with to my pc through a USB multi card reader and all of my files got turned into a single file with no extension, it would be stuck in a black screen with loading on white letters on boot. I never backed up the files and since it had no front label I couldn't find the right files to put in it. It has a 2015-01-06 oval holographic sticker on the back and it shows up as SpongeBob's Atlantis Squarepantis and that's about all the info I have. Thank you for any help