: This resistor tricks the phone's bootloader into allowing the COM 1.0 connection despite the software security blocks. How to use it Connect the modified cable to the phone. JNY-LX1 test point

On older firmware, shorting the test point to ground while plugging in the USB cable was enough. On newer security patches (especially Android 10.1 and HarmonyOS), Huawei has disabled this simple entry method. The PC will either show "Device Not Recognized" or nothing at all, even if you are shorting the correct pins. 2. The Solution: The "HarmonyOS" or Modified USB Cable

Different tools require different states after the test point short.

Use a magnifying glass to ensure the pad is still there. If it’s gone, you may need to find a schematic to locate an alternative trace further up the board. Summary Checklist Disconnect the Battery . Short the Test Point to Ground firmly. Connect to a USB 2.0 port using a high-quality data cable. Check Device Manager for "Huawei USB COM 1.0". If still failing, use a HarmonyOS/Resistor cable . AI responses may include mistakes. Learn more

Windows 10/11 automatically blocks unsigned drivers. The Huawei USB COM 1.0 driver is unsigned. If Windows reinstalls the driver incorrectly, the device manager will show a yellow exclamation mark or nothing at all.