Note: If this doesn't work, you may need a device-specific shortcut app from the Google Play Store to access Engineering Mode.

. The tool will write the IMEI numbers to the NVRAM partition.

Choose Phone 1 (for SIM1) or Phone 2 (for SIM2).

Load the specific MT6580 database file (commonly named BROM_DLL or starting with MDDB ) which can be found inside your stock firmware folder.

Windows PC methods require proper MediaTek drivers. Download and install:

Launch SN Writer and set "Target Type" to and "ComPort" to USB VCOM .

This comprehensive guide explains how to restore your network connectivity using MT6580 IMEI repair codes, engineer menus, and specialized software tools. Understanding the MT6580 Chipset and IMEI Corruption