HOW TO UNROOT ALMOST ANY ANDROID PHONES/DEVICES:

 First of all, (go down low) to get the unlock-root tool from here, there are two variant, one is free-version and a paid variant, (no money bah?) here we use the free version.
Save the tool in your PC.
Install the e unlock-root tool in your computer.
 Run the executable (.exe) file.
Now, you have to download and install your device’s driver on your PC.
Using the USB cable connects your device to the PC.
Now, from the Unlock-Root tool interface click on the “root” button
There you will see a list of the supported device.
 From the displayed list select your Android device.
Start the rooting process, when the rooting process is done, you’ll receive a confirmation message
Disconnect your device removing the USB cable from the PC.
Reboot your device.
 That’s all; now you successfully learnt how you can root your Android device using Unlock-Root method. Now, you can use your root privileges to flash available custom ROM firmware, to install custom recovery images, install the root-only applications and all customizations that you want to do in your device to improve its performances.