Always use official Allwinner USB drivers to avoid bricking the device.

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) so I can find the exact button combination for its boot mode?

Click on the tab and browse to select your downloaded Allwinner A133 stock .img firmware file. Turn off your tablet completely.

If you're not comfortable with DIY methods or if the above methods fail, consider seeking professional help from a reputable repair service or the device manufacturer's support team.

If your PC fails to recognize the tablet, disable Digital Driver Signature Enforcement in Windows and reinstall the Allwinner USB drivers.

The software will detect the Allwinner VID/PID interface, send a custom bootloader configuration file, and clear the frp partition block in under five seconds. Troubleshooting Common Errors