To work on mtk droid tool:
1-enable usb debbug in phone..
2-root phone..
3-open mtk droid tool..
Then the ptogram show information phone..
4-after show information click root.
After that you show green color on the program (Down""left program)
5-after green color click repair to eneter imei..
After finish reboot you phone..
If you need any other help tell me...
This is program download ver 2.5.3
https://androidmtk.com/download-mtk-droid-tool