Ah, if GameCube games work through SD but not USB then it sounds like you have Dios Mios Lite.
Dios Mios = USB
Dios Mios Lite = SD
Devolution = Both USB & SD
if it works from SD card, then you have Dios Mios Lite installed. Reinstall Dios Mios and then try from USB.Originally Posted by skaldicpoet9