Modified FunkyFrog OS (which in turn is Modified DrUm78 FunKey OS) to run on Chinese FunKey clones in GBA SP shells. This should be a step up from the stock OS, especially for English speakers. the img file should be flashed to an SD card using dd, balena etcher, rufus, etc. the fwu is only for updates, so for this initial release at least, shouldn't be used.