: This is essential for the PC to communicate with the phone in its low-level boot mode.
Sigma does not support JNY-LX1 in normal fastboot for IMEI repair. You must force the phone into (download mode).
: Go to the Service tab and select "Load Fastboot" or "Backdoor open" for the Kirin 810 . Write Certificate : Navigate to the IMEI / Repair section.