I have the original Australian release of the classic 3DS, currently on version 4.3.0-10E. I also have the very first release of the Gateway flashcart. The 3DS and cart have been sitting in a cupboard for many years, and I've lost the SD with the firmware on it. Looking at the Gateway website, all the current firmwares require version 9 or so. Basically, I just want to be able to use my flashcart on my 3DS to play backups of the latest games. I've heard of EmuNand, which I may need. What's the quickest/easiest way to do this? Any help would be greatly appreciated.