I am looking to get a 3DS (old not "new") and a flash cart. I have come to learn that my best bet is to get a 3DS with firmware 9.2 (or lower) and use the Gateway 3DS flash cart; or else the Sky3DS flash cart for firmware 9.3+. Now, I am trying to figure out how to install and use the flash carts. It is my understanding that (at least for the Gateway 3DS) I will need an original Zelda: OoT 3D game cartridge to use as a one-time exploit in order to get the flash cart installed and working. So my question is, are there any other exploits available that I could use so that I don't need to get a copy of Zelda: OoT 3D? Also, do I need to buy an SD for the 3DS in order to use the exploit and to save my games, or can I just use my microSD card that I'd be putting my 3DS game backups on? If I do need an SD card for the exploit/save games, what size do you recommend? Thanks!