Connect the Type-C cable to Wolf and PC.

Enter DFU MODE setting, Wolf will be turned off.

Press the Wolf power button, the screen will turn black, but the USB port will be connected to the computer.

Start STM32Cube, select USB, detect the transceiver and read the old firmware, turn on the new firmware Wolf-RA8875_GT911.bin and load it into WOLF (at this time, the Wolf power button must be held down). After the firmware is complete, click "Disconnect" and release the Wolf power button.

To open Wolf, the firmware must be updated.