I downloaded the Tecno MTK back up file. I opened the the SP flash tool, then I clicked on Scatter Loading and I selected MT6575 Android Scatter file from the file I downloaded.
Then a page open I saw something like...
You said I should flash only system.img and boot.img, but from the MTK backup I have...
MT6575 Android Scatter
My problem is that I don't know the actual file to select from the MTK backup.