I can suggest u one thing: Firstly, download the ES File Explorer tool from the Google Play Store. Once launched, you'll be shown a long list of functions the app can perform. Ignore these, and select the menu drop-down at the top left.
Scroll down this menu until you see options with button sliders, some on and some off. One of these will be the Root Explorer option (off by default) - switch this on and it will ask for root privileges.
Back on the main screen of the app, hit the box with the storage information at the top of the screen and locate the device's root folder - this will typically be in "system" | "bin". Find and delete both the "su" and "busybox" files.
Now head back to the main screen, hit the storage info box again and this time look for the "app" folder. In here you want to delete a file labelled "superuser.apk".
Once that's done, you can restart your device. Once it boots back up, your device should be unrooted and back to its original state.
Unrooting Android: SuperSU
One of the most popular methods to root and unroot an Android device is SuperSU.
If your device is already rooted, chances are that you have this installed on it already. If you don't, it is easy enough to go to the Google Play Store and download it.
When this is installed, launch the app and tap on the Settings tab. Scroll down the page until you see an option called "Full unroot", then tap on this. The app will then ask if you are sure you want to completely unroot the device. Tap continue.
Once this is done, the app will automatically close and you will need to restart the device. Once it has rebooted, you can uninstall SuperSU and your device will be unrooted once more.
Unrooting Android: Universal Unroot
Unlike the previous apps, a Universal Unroot will cost you (about 78p) but it is worth it if you have issues with other methods of uprooting. The app is pretty straight forward and will simply guide you through the uprooting process for your Android smartphone and or tablet.
However, this will also depend on your model of smartphone as some manufacturers have software that prevents it. Samsung Galaxy devices, for instance, have the company's Knox software pre-loaded, which blocks Universal Unroot. LG devices have eFuse software
