These are the steps to unroot the Samsung Galaxy GIO. If you had rooted your Samsung smartphone and would like to return back to the stock ROM the way your OEM intended, you can follow this guide and get that done. You should find that the warranty will work again after following this guide. Furthermore, the guide will also help if you were suffering from any soft-brick signs.

Samsung Galaxy GIO

The Files You Need

  • Download the Android 2.3.6 Gingerbread firmware from this page.
  • Down load the Odin 3.04 from this page. If that link isn’t working during your time of visit, try Odin 1.85.
  • You are to follow this guide using the Galaxy GIO only; do not install this firmware on any other device or else you will brick it.
  • Due to the website laws out of our control, the firmware file is only available to those people who are in the United States. Those outside of the US won’t be able to use the link.

Unrooting the Samsung Galaxy GIO

  1. Unzip the firmware folder on the computer.
  2. Drag and drop the firmware file from the folder to the desktop.
  3. Unzip the Odin flashing tool for Windows.
  4. Double-click and run that executable file after you unzipped the file.
  5. Long-press the Power button on the Samsung Galaxy GIO.
  6. Wait until you know the smartphone is definitely off.
  7. Reboot the GIO in download mode. Press the Volume Down + Home + Power keys at the same time and keep them firmly pressed down until you know the device is in download mode. You should get a warning message on the display alerting you of that.
  8. Now release the three keys you were holding and just press the Volume Up button.
  9. The Galaxy GIO will now get past the warning screen.
  10. Connect the Galaxy GIO to the computer using the USB cable.
  11. Click the PDA button in the Odin tool.
  12. Upload the 2.3.6 Gingerbread firmware file.
  13. Click the Start button.
  14. Let Odin now take over and flash your device with the firmware.
  15. Wait until the Odin flashing tool gives the pass message on the display.
  16. Disconnect from the computer and you are good to go!

You can make sure you are unrooted by installing the root checker app from the Google Play Store.