Hardware: Ace3DS X has a switch for 3DS mode and DS mode3DS mode-NTRBOOT flashed FLASHCARD. Ace3DS X has been pre-flashed NTRBOOT and supports installing boot9strap on all 3DS consoles models & versionsThe using method of Ace3DS X is a little different from other flashcards, and you need to insert one FAT32 microSD card(maximum capacity is 32GB) to your flashcardThe other steps of using Ace3DS X are the same as other flashcards. Follow the Installing boot9strap (ntrboot) instruction in 3ds.guide.Change the step 3 as: Insert one FAT32 microSD card(maximum capacity is 32GB) to your flashcard, then insert your flashcard into your deviceDS mode. It is ace3ds plus, the using method is the same as before.