I am on the latest version of Luma, and have installed different GBA cias and made my own with the ultimate injector method. Sadly, while they do work without any battery issues, I get an odd issue where the full screen isn't being displayed. The top is cut off and the bottom has a line going through it, like a rendering issue. I can't seem to think of a fix.. and it irks me because it is better playing on this 3DS than my old DS.