How to get GBA games on R4 for DS?
There are these things called Homebrew applications, which allow you to download them and add them to your R4. There are some that act as a personal organiser, etc. There is one in particular called “Lameboy” and I’m pretty sure it allows you to play GBA games from there. When you run it on your DS, you’d have to run the “Lameboy” file and then you should be able to choose the GBA games from there. If not, browse through the long list of homebrew applications that are available and maybe you’ll find one that suits you! 🙂 I’ve linked you to some handy links below..