Easy way to Unroot your phone

Two Easiest Method to Unroot Any Android Device
A lot of people might be new to Android, while
some are Android gods but in one way or the
others, might not know this.

A lot desired of
people gets Lollipop updates even though we
are passionately ready to welcome Android M .
It is paramount to note that, before you perform
any upgrade on your Android device, It is
adviceable to first of all unroot your device if
you are rooted, to avoid story that touch.
I’ll quickly show you two easiest way to unroot
any Android device in seconds.
Before you begin to unroot your android phone,
make sure you have done the following:
==>Backup your data: While unrooting, all the data will be wiped out. so make sure to backup all your important data either on your SD card or your PC.
==>Charge your phone : Ensure that battery is charged to more than 60%.
Method ONE : Super User App
This method works for all android devices that were rooted without installing custom recovery.
1. First, download and install SuperSU app from Play Store .
2. Launch SuperSU app, go to Settings, and tap on ‘Full unroot’.
3. It will confirm you just tap continue. After successful, Unroot superuser will close automatically
4. Restart your device
5. Uninstall SuperSU and you are fully
unrooted.
Method TWO: ES File Explorer
1. Install ES File Explorer app on your device. Don’t move it to SD card.
2. Open the app and tap the menu button
3. Now tap on ‘ Tools’ and select ‘ Root Explorer’ to turn it on.
4. Superuser will ask you to grant privilege or root privileges to the app. Allow it.
5. Now go back to the main screen of the app and select ‘ /’ in the top corner of the screen.
6. Go to system -> bin . Find the busybox and su file and delete them. If you can’t find any of them, just skip to the next step.
7. Go back to system folder then open ‘ xbin ’ folder and delete the busybox and su file there (if you found any).
8. Now go back to the system folder again and open ‘app’ folder and then delete the supeuser.apk file located in the folder. That's all.
9. Now restart your device and it should be unrooted.
Now that you have been fully unroot, you can
continue with your upgrade.