: Use a reliable USB cable and connect it directly to your computer's motherboard port, not a USB hub.
This comprehensive guide covers everything you need to safely flash stock or custom firmware onto your Allwinner A133 device. Prerequisites and Safety Warnings allwinner a133 firmware install
This typically indicates a corrupted firmware file download, a bad USB port, or an incorrect firmware version meant for a different motherboard revision. Try a different USB port (preferably on the back of the PC motherboard) or download an alternate firmware version. : Use a reliable USB cable and connect