The BIOS update tutorial is as follows:

1. First, plug in the power cord and charge.
2. The file path cannot contain Chinese characters, otherwise it will fail to run.
3. Right-click on the "01_start.bat" file and select "Run as administrator".
4. Then the device will start updating the BIOS (no operation is required during this period, the device will shut down automatically after flashing).
5. After the device shuts down, wait for 10 minutes before pressing the power button to turn it on (after flashing, the first boot time may be longer, so there's no need to worry).
6. Once you enter the Windows interface, flashing is complete!