The firmware (or stock ROM) for the Allwinner A133 is the operating system—typically a version of Android (often 10 or 11)—pre-installed on the tablet. It includes the bootloader, kernel, system UI, and necessary drivers for the hardware.
Assume you have downloaded the correct A133_firmware.img and installed PhoenixSuit v1.2+.
After installing the driver, sunxi-fel should detect the device correctly. Allwinner A133 Firmware
There are several types of firmware for the Allwinner A133 SoC, each with its own specific purpose and characteristics:
Download, extract, and open the PhoenixSuit application. The firmware (or stock ROM) for the Allwinner
Boot the device into Android Recovery Mode (usually held by pressing Power + Volume Up during boot). Use the volume keys to navigate to Wipe Data / Factory Reset , select it with the Power button, and reboot. Where to Find Safe Firmware Downloads
On Windows, even if lsusb shows the device, sunxi-fel may fail due to driver issues. The solution is to use to install the WinUSB driver for the FEL device: After installing the driver, sunxi-fel should detect the
As of 2025-2026, the A133 remains in active production for industrial use. You will see firmware updates for the following: