Used if you prefer to flash the firmware via a bootable MicroSD card rather than a USB cable. Allwinner USB Drivers:
: You must have a .img firmware file specific to your device model. Note that Allwinner A133 firmware is often difficult to find online; it is recommended to check the official manufacturer's website or forums like 4PDA or Hovatek . Allwinner A133 Firmware
Use a tool like to burn the .img firmware to the SD card. Used if you prefer to flash the firmware
Must be installed on your Windows PC so the computer recognizes the tablet in "FEL mode" (flashing mode). 3. Where to Find Firmware Files Allwinner A133 Firmware
Press and hold a physical button (usually or a hidden Reset pinhole button).