I have a Japanese 3DS on firmware 5.X. I read the new gateway exploit using OoT can work on all 3DS. Do I need to have a Japanese OoT because I only have a USA version of it. Also how do I apply the exploit? Is it buy the Gateway first then just follow the instructions to apply the exploit? Also, which/where can I buy a gateway for a reasonable price? Sorry, for asking so many questions.