To begin, power off the device and disconnect the battery. Using a pair of tweezers, connect the testpoint on the motherboard to a metal shield (ground) and simultaneously plug in the USB cable. If successful, your PC’s Device Manager will show "Huawei USB COM 1.0." 2. Configure Sigma Plus Launch the Sigma Plus software. Select the "HiSilicon" platform from the main menu. Navigate to the "Service" In the phone models list, select " " or " " depending on the current Sigma UI version.
: The software will perform several operations (loading fastboot, opening backdoors). Once it displays "Done," disconnect the phone, reconnect the battery, and restart the device. jny-lx1 imei repair sigma