You will need to find an alternative MT6572 universal firmware revision or use a tool like MtkDroidTools to unpack the ROM and swap the lk.bin (Uboot) file with one from a working backup of your exact device. 4. Invalid IMEI / No Network Signal
This usually signifies a handshake interruption or poor script execution caused by a bad cable or dynamic port changing.
Extract the SP Flash Tool ZIP archive and launch flash_tool.exe as an Administrator.
As described in this video guide , it is possible to create a backup using MTK Droid Tools before flashing, which allows you to "Prepare blocks for Flash Tool". mt6572 universal firmware
Instead of “universal” firmware, :
Warning: Avoid using "Format All + Download" unless absolutely necessary, as it can erase your device’s unique IMEI numbers and NVRAM calibration data.
To install (flash) firmware on an MT6572 device, you will generally need these standard tools: You will need to find an alternative MT6572
Once completed, a green circle window with a checkmark () will pop up.
In the "Download" tab, click next to the Scatter-loading File.
SP Flash Tool offers a dropdown menu with three distinct flashing modes. Selecting the wrong one can permanently destroy your device's unique identifiers. Extract the SP Flash Tool ZIP archive and launch flash_tool
The official software used to flash MediaTek chips. Use version 5.x for older chipsets like the MT6572.
To flash the firmware, you will need a Windows computer and several essential tools.
Do not move, touch, or disconnect the phone during the yellow bar phase.
If you mistakenly used the Format All + Download option, your phone will boot but fail to register on cellular networks due to a missing or invalid IMEI.
The official Smart Phone Flash Tool developed by MediaTek. Version 5.x is recommended for the MT6572 chipset.