You need an SD card and then insert it into the flash card, lil bro. Also, I don't have a Game Boy Advance
No I was trying to use an emulator but it did work today and it looks peak
But it can work on a real hardware because I use Meteo to convert avi to gba and then I dragged the gba file into the gbafix.exe file that has that file in the meteo folder, it did work on my emulator using the bios file.
and it looks peak