How to Unroot Samsung Galaxy S3! [AT&T/T-Mobile/Verizon]

This will delete everything from your internal sd card (internal memory) on your Galaxy S3!! Back up your photos, contacts...ect! 
What will unrooting my Samsung Galaxy S3 do to my phone? If you follow this process step by step it will completely restore your phone back to 100% complete stock, just like the day you bought your phone. It's also safe enough to send back to Samsung without Samsung knowing you ever installed ClockworkMod Recovery or rooted your phone. 

1. Download and install Triangle Away app on your phone from Here. Just download the apk at the bottom of the page directly to your phone and install it by tapping on the file.

2. Open the app and select "Reset flash counter". 

3. Enter your phone into "Download Mode". Make sure your phone is unplugged and turned off.

4. Hold the volume down, home center, and power button at the same time. When you feel a vibration let go of the power, but keep holding onto the volume down and home button.

5. Press the volume up to continue.

6. Plug your phone via microUSB to your computer.

7. Download "Odin3" and the stock file for your phone using the links below. (Sorry for using Depositfiles, the file size is too big for my usual download servers.) --> Download Odin3 v1.85 <---- Everyone download this file!
AT&T -
T-Mobile -
Verizon - -->

8. Extract the big stock zip file you just downloaded.

9. Unzip "Odin3" and open "Odin3 v1.85".

10. In Odin you should see a yellow highlighted box on the left of the program. If you don't download and install Samsung Kies.

11. Click on "PDA" and locate the tar file that was extracted.

12. Click on "Start"and let your phone reboot.

13. If you get any errors or get stuck on bootlooop do a factory reset in stock recovery.

14. Power off your phone, then press the volume up, home center, and power button. Hold all three at the same time, when you feel a vibration let go of the power, but keep holding the volume up and center home button.

15. Select "Wipe Data / Factory Reset" and select "yes".

16. Select "Wipe Cache Partition".

17. Select "reboot system now" and your now on 100% stock and unrooted.

Credits -
Triangle Away

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