I have here a R4i Gold 3DS RTS bricked (it suddenly stopped working) and I'm trying to recover it using ntrboot_flasher, but none of the backups that I've downloaded are working. When I try to make a backup from it, I just get a backup.bin with 4 MB of 00 in hex. Is there a way to recover it? I'll leave here a picture of HxD with the backup I got and a picture of the R4.