I wasn't sure if this was better suited in the DS or 3DS section, but the 3DS gets enough seemingly useless spam, so I went with the other. There's a lot of options for DS users to back up their cartridge saves, be it through external hardware or WiFi enabled homebrew. These are all good working options, save for the fact that the 3DS does not work with the WiFi mode. This is where my interest comes in. Just as with that piece of software has to be stored locally to continue running it's basic task without the flash cart being inserted, would it not also be logical to be able to store a save in the system RAM, before copying it back onto the flash cart? Mind my ignorance if this is already something that has been done, or if there's a known technical limitation preventing it.