This post is from one of several previous incarnations of this site and probably doesn’t quite fit the current format. In a former life this was a group blog and a tumblelog before it became a static jekyll site. If anything looks broken or is worded oddly that could be why. Pardon the dust.
EAGB have a review/article on the Flash Advance Linker for Gameboy Advance. This downloader and blank ROM cartridge allow you to backup GBA ROM images on to a blank cart for playing on your console. Oh and it can be used as a Dev tool too..