I found my Pokemon White cartridge from several years ago. When I put it into my 3ds, it loads but then goes to a screen saying that the save data cannot be accessed. It prompts me to turn the power off and reinsert the cartridge, but that does not work. I checked PKSM, but the save file didn't even appear. I then created a backup via checkpoint and tried loading the save file into PKHeX. The error message, "Attempted to load an unsupported file type/size." I checked to see if I was using the right settings for Pokemon White, and I was. This led me to believe my cartridge is corrupt. I have attached the save file below. If anyone could help me revive this save file, that would be amazing.
POKEMON W.sav