Is this part of the guide https://3ds.guide/dsiware-downgrade-(app-injection-and-second-3ds) (Section III) possible to do with FBI? My top screen is broken so I can't see the menu options and controls. However, I've seen video tutorials with use Sudoku and FBI and put in the saves that way? (I can see basically everything in FBI) Is that possible for my system, A9LH with sudoku?