Yeah i don't difference between the defaut firmware and the one included in the archive (miniOS), but i have to admit that i didn't use it a lot on my A320e, i prefer to boot on dingux. I agree with alienGrey and i think it's provided to unbrick the a320e when something wrong when you install the dualboot.Anyway to try update miniOS, connect your dingoo in usbboot mode (Press start and connect you dingoo, screen is black but your dingoo is detected), then install the drivers like for dualboot. After that just use the burntool in the miniOS folder instead of the one from dingux folder.