1. If there is no driver, download
from here.
2. Download the archive with all the necessary
HERE .
3. Unpack root of drive C.
4. Put our archive "BETA-SuperSU-v2.72.zip" in the root of your phone's memory.
5. Run Flashtool administrator.
6. In the column scatter-loading file specify "MT6753_Android_scatter - TWRP.txt" from the folder "Vernee Thor TWRP 3.0.2-1".
7. In the "Options", tab "Download" to tick the box.
8. Click "Download".
9. Connect the phone to shut down the PC.
10. Wait until the window with checkbox appears. Disconnect the phone from the PC.
Now in the phone:
11. Hold the volume "Up" button and the power button.
12. Volume buttons "Up" tab, select "recovery", and the volume button "down" open it.
13. We see the logo TWRP. On request, we choose Russian language and spend swipe right.
14. Select the tab "Install" ( "Install") and select our archive "BETA-SuperSU-v2.72.zip" (usually at the bottom of the list).
We hold slider and wait until the installation.
15. After successful installation do "Wipe dalvik cache".
16. Reboot.
Done!