After rooting your smartphone, then you can install Supersu available from playstore and you are ready for next step.
Download from playstore and employ MobileUncle for flash recovery. Place .img file into the root of the mobile phone of yours. You need to have twrp-2-7-1-0-kk-for-thl-5000 recovery .img file in your phone. Put them in sd card.
You may need to OTA-Update to 1.07
1. Root the phone
It may take 2-3 minutes. Let the process continue. Chinese SuperSU will be installed. It can be uninstalled by e.g., Chanifire’s original. Both work perfectly.
2. Install Mobile Uncle tool.apk
3. Open Mobile Uncle tool
4. Choose flash recovery and select the twrp-2-7-1-0-kk-for-thl-5000 recovery
5. Reboot and you are done with flashing recovery. [source]