Download and Install correctly Mediatek Preloader drivers.
Download Flashtool and unpack it in a directory.
1- With flashtool load MT6735_Android_Scatter TWRP.txt
2- Select download and connect smartphone to pc (smartphone must be powered off)… in few seconds will start the process and the new TWRP will be flashed.
To restore original stock recovery, you need load at point 1 the file MT6735_Android_Scatter.txt
P.S. to enter in the recovery, power off the smartphone, push VOL + and Power at the same time, you will see three words with VOL + you move selection, with VOL – you havw to select Recovery
To have root flash with TWRP the archive supersu.zip found here: https://download.chainfire.eu/696/supersu/
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