I have tried this on 2 different 3ds, one the original 3ds and one 3ds xl (neither new). I can get to the exploit menu and load the exploit but then i get the "There is nothing inserted into the Game Card Slot." I was able to update both of the Red Gateway Cards I have using the exploit. I copied .3ds files onto exFAT 32gb SanDisk Ultra Micro SD cards. Is there any special process or files besides the .3ds files that need to go on them? Advice?