When I go to Nintendo DS Profile Settings from my Gateway card, there is an option called Backup 3DS Game Cartridge. What does this do? Does it create a ROM of the game inside the 3DS (retail game cartridge in 3DS?)? So will it make a ROM that can be used by Gateway (file can be copied from SD card, then put file in root of microSD card, then put microSD in Gateway Red card and you can load and play the game? How does this work (I'm assuming put in Blue Gateway card, Nintendo DS Profile Setting, take out Blue card, insert retail game, select Backup 3DS Game Cartridge and the ROM will be in the SD card?)? So for example, could I borrow a friend's retail game cartridge, use Backup 3DS Game Cartridge then I will have the game/ROM (which I can put on Gateway Red card to play)?