Before flashing, if your phone still boots, try to back up your NVRAM/IMEI. The MT6589 is notorious for losing IMEI data during deep flashes.
: Power off your device and connect it to your PC via USB to begin the process. Where to Find or Create One mt6589 android scatter emmctxtnnlin exclusive
It is highly regarded in troubleshooting forums because it matches the exact MT6589_Android_scatter_emmc.txt structure required to restore the Preloader and DSP_BL partitions. How to Use It Safely Before flashing, if your phone still boots, try
Use this only as a last resort , as it will wipe your IMEI and NVRAM (causing "Invalid IMEI" errors). 4. Connecting the Device if your phone still boots