In replyence to you saying that you could not find somthing on your gba emulator
what divice are u using if andriod i can help
Tutorial start
1.get a file manager (or if have use file manager)
2.look in download folder
Alternate 2. If its on external storage you have to exit some folder that are standerdly opend into for some reason until you find the folder mnt
Alternate 3.open mnt then open folder external sd