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Before proceeding, you must physically access the device's motherboard.

Based on the hardware identifier , this refers to the Huawei Mate 20 Lite .

| Problem | Fix | |--------|-----| | No 9008 port | Check short timing; try different ground point. | | Device manager shows unknown | Install Huawei USB drivers / HCU drivers. | | Flash fails | Use proper firmware version (EML-L29, not EML-AL00). |

: Remove the small screws holding the motherboard's protective shield to reveal the contact points. How to Locate and Use the Test Point

Once the phone is connected via the Test Point and detected by the PC:

The EML-L29 test point is a specific pin on the motherboard that must be "shorted" (connected) to a ground point (like the metal shield of the motherboard) while connecting the device to a computer.