How to unroot?

Hey guys, Rooted your grand and want to make your device official and get your manufacturer warranty??

Here is the step to unroot your grand successfully and avail your warranty. Follow these easy guide step by step and you will be back to official.

Things you must know

1. You will lose your root access.
2. You will be back to official.
3. You must be on stock firmware for this guide.

Requirements

1. Your rooted grand for obvious. with above 80% charge.
2. Triange Away - Download.
3. Odin3 v3.09 - Download.
4. Stock Recovery - Download for 4.1.2
5. Download official Stock ROM 4.1.2 or 4.2.2. From Sammobile.com.

So lets start!!

1. Open triangle away and click on 'reset flash counter'. It will make your flash counter to '0'.(Necessary)
2. Now open SuperSU in your device and go to settings tab and click on 'full unroot' button. It will restart your device.
3. Now open Odin on your PC and boot your device into download mode by pressing volume down+menu+power.
4. Connect your device to PC and Click on PDA/AP on Odin and select the official firmware you downloaded from above.
5. Now start flashing the firmware.
6. Congo!! Now you are fully unrooted and turned your device completely official.

Thank you..