: Communicating with the device via the HiSilicon USB COM 1.0 serial port, often triggered by "test points" on the motherboard. Key Requirements for Use
Re-download the firmware package and verify the XML integrity. Protocol handshake failure or faulty USB cable. huawei hisilicon flash tool
If the device doesn't enter this mode, check your drivers and ensure the battery is disconnected. : Communicating with the device via the HiSilicon USB COM 1