How to root a90sBefore rooting, please charge your A90S to at least 70% battery level. Also disable all antivirus programs (if you are using any).once done, you can proceed further with complete guide which is mentioned below:
1. Download Bin4ry tool kit and all driver to your computer.
2. After downloading kits, connect your A90S with computer via USB cable.
3. Unzip Bin4ry kit and open the extracted file.
4. Now check for RunMe.bat file in extracted folder. Run this file.
5. Now you will get an on screen guide which will guide you through a prompt window.
6. Simply follow all the instructions.
7. After following all the instruction, your device will get rooted for new recovery and ROMs.
8. Wait for the command prompt to show “Process Completed” message.
Now disconnect USB cable and enjoy rooted A90S.
Please note: that if you are facing any problems then simply remove OFF the battery and repeat all the steps again.