The thing is, I did a process on YT, specifically with the USBloader GX, the games were there, but they would just stay in a black screen, it would sometimes take minutes just to load, or not load at all, I tried installing the games on WiiFlow, the games didn't show up, I tried USB loader GX again, doing the exact same process, the games didn't show up. Something weird is going on.Just search here (GBA) for the answers.
USB Flash drives aren't very friendly with Fat32. Some will say otherwise.
So, unless you have completely compatible Flash drive, you're pushing crap up hill
Hope it's not a clone.