The official drivers required for your Windows PC to properly communicate with the Kirin boot interface.
Look up a test point diagram specific to your Huawei model online. The test point is a small copper dot on the motherboard that must be grounded.
: You must install the HUAWEI USB COM 1.0 driver to replace the generic "USB SER" entry in Device Manager.
When a Huawei device enters this state, the screen remains completely black, but the hardware opens a direct communication line with a computer. In device manager, it registers as . Because this mode executes before the secure Android operating system and FRP locks load, it allows specialized servicing software to read data, write data, erase partition locks, or flash firmware directly to the device memory chip. Understanding the "Test Point" Requirement