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: Ensure you are running the latest version available on the official SigmaKey Download Page.
: You will need to open the device to short a specific point on the motherboard to ground, forcing the phone into "USB COM 1.0" mode. Step-by-Step Repair Process jny-lx1 imei repair sigma
Drop down the port selection menu and select the port identified in your Device Manager.
Select the correct COM port (Huawei USB COM 1.0) and the device model ( IMEI Repair/Write CERT What specific is the software showing
Using a metal tweezer, short the testpoint pin to the metal shielding (ground) and connect the USB cable to the PC.
: Power off the phone and remove the back cover. Locate the physical testpoint pin on the motherboard. Short the testpoint pin to the ground shield using precision tweezers while inserting the USB cable. Step-by-Step Repair Process Drop down the port selection
: If the IMEI is repaired but the phone shows as a "Demo" unit or has the wrong country code, you can use the Read/Write OEM INFO feature in Sigma to fix the vendor/country settings.
If you follow this guide, that "dead" JNY-LX1 will be making calls again within 20 minutes. For persistent errors, consult Sigma's official support forum or hire a professional technician—this is not a job for beginners.
Choose a valid .skcp or certificate file compatible with the Kirin 810 chipset.