Android OS is the most popular mobile operating system. If you are using an Android phone, you must have applied rooting process to it to get the most of from your device. Rooting of an Android device is not a legal way and it voids warranty period of your device. However, people do love to root their Android devices, just to get the better functionality and many things within. If you have already a rooted device and want to un-root it to get back your warranty, this tutorial is an important one.
So, if you think that, you should unroot your smartphone, then Universal Unroot is a great app for you. This is a great app for those who are trying to complete a warranty return with a carrier for a defective device hardware or a repair. If you only want to temporarily lose Root Access, this app is not for you. Unrooting is permanent and cannot be undone with this app. Only use this if you truly want to lose Root Access.
If your device has an Insecure Kernel (Boot.img) the app will now tell you and close. This is for users who could not bother to read the App Description that warns you that if your device has an Insecure Kernel, it will NOT fully unroot you.
Insecure Kernel (Boot.img) means that unless your Kernel (Boot.img) is brought back to the factory stock file, your device will never be unrooted fully, so this app will no longer bother attempting to try, only to get users complaining about not being able to OTA.
Simply hit the ‘UNROOT’ button and allow Root Access when asked to give it permission. The device will then reboot and you will be completely Unrooted when you boot back up.
****WHEN APP DOES NOT REBOOT AFTER ALLOWING ROOT, CLOSE THE APP AND HIT UNROOT AGAIN!
I repeat, Unrooting is permanent and cannot be undone with this app. Only use this if you truly want to lose Root Access.
Please be aware, this app does not gurantee that it will fix your specific devices “Over-The-Air Update” issues. In most cases, anything you did with root such as: Debloating, Installing a custom Kernel, custom ROM, custom Recovery (like TWRP or Clockworkmod), enabling tether, etc. will NOT be un-done by this app. If you can’t update because your system was modified, look for a way to flash back the entire device, such as Odin for Samsung.
You can see a video explaining this by “zedomaxx” on youtube here: