Before hand I would just like to say thanks for reading this thread. I reallyyyyyyyyyyyyyyyyyy need this question answered. It is the same question in this thread. I want to buy a 3DS but I don't know if my flashcart will work in it. I have the R4i SDHC RTS that came in a packaging with Happybox written on it. This is the site of the flashcart:R4isdhc.com Here on the site it says that it has an update for the card so it can run on 3DS v1.0.0-0J. As you should know the J stands for Japanese and I want to buy the American(U) version of the 3DS. In addition to that the firmware of the 3DS has been updated to v1.1.0-1. Please help!!