Download Require Files-
1. Download SP flash tools https://androidfilehost.com/?fid=745425885120763929
2. V Com Driver Require https://androidfilehost.com/?fid=817550096634801170
3. twrp Require https://romprovider.com/2017/10/t-ro...oo-kiicaa-mix/
4. Supersu Require https://forum.xda-developers.com/app...-mode-t3286120
1. Install VCom Driver
2. Run SP flash tools and Load scatter from Recovery folder
3. check recovery only and under recovery section load twrp.img
4. click Download, and connect switched off Phone to PC
5. wait for success. Done twrp installed.
6. reboot to twrp by holding power and volume+ button
7. create a nandroid backup
8. flash supersu.zip, done successfully Rooted.
i hope You will get success.