Guide to Unroot Sprint Galaxy S3
Rooting voids the limitations of manufacturer on the Android device and lets user to install root-required apps such as MODs, custom ROMs, tweaks and more. But there’s also one lose, since rooting voids manufacturer limitations, it also void the warranty of your Android phone and to get warranty back, you have to unroot the device.
Sprint Galaxy S3 users can easily unroot the phone by installing the stock ROM. Take a look at below guide to install stock ROM to unroot your Galaxy S3.
Before installation disable all system tools such as Samsung KIES, antivirus, firewall program, please make a backup of your device data such as SMS, internet setting, contacts music files etc because the below procedure may wipe data, you can sync your contacts with Gmail account and for messages use SMS apps, lastly use file expert app to backup apps, and turn the USB Debugging on, to do so just tap Menu> Settings> Application> Development. USB drivers must be installed on your PC, you might install via Samsung KIES, but during installation, the Samsung KIES must be disabled.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.
Step #1: Download Stock ROM from here [XDA LINK] and also download Odin3-v3.04.
Step #2: Unzip both download zip files into a single folder.
Step #3: Open the folder where you’ve unzipped above file and run Odin.
Step #4: Turn the device off.
Step #5: Reboot the device into download mode by holding down volume down, home and power button, when you see warning screen, press volume up button to enter in download mode.
Step #6: Once you’re in download mode plug the device to PC using USB cable. Odin will detect the device, ID:COM will turn yellow and a message saying ADDED will appear. (Note: If Odin doesn’t detect the device, make sure that USB drivers are properly installed on your computer).
Step #7: Click on PDA Button and locate .tar file that you obtained in step 2 (Note: Don’t make any change, just make sure that re-partition is unchecked).
Step #8: Click on Start button to start installation, once the installation done, your device will reboot itself and you’ll see message saying PASS (Note: If Odin refuse to install the update and show message FAIL, or get stuck, close the Odin and unplug device, then pull out battery from the device for a few seconds. Then put the battery back to the device and reboot into download mode. Then install the firmware again.
Step #9: That’s it, unplug the device from PC.
Great job, you’re done. Your device is now unrooted, you can visit the Samsung shop for warranty. Do comment below for queries. You can also visit the original thread of XDA link given in first step.