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Downgrade Galaxy S3 to stock JB 4.1.2 XXEMF6 Firmware

If you have updated your Samsung Galaxy S3 I9300 to official Jelly Bean 4.2.2 OS but you don’t like the new firmware and you rather chose to use the old stable and smooth 4.1.2 XXEMF6 software, then you should follow this guide for learning how to downgrade your Galaxy S3. The best is that Android 4.3 will soon be rolled out for your device so until then flash the most stable update that has been rolled out by Samsung for your Galaxy S3 I9300: JB 4.1.2 XXEMF6.

You should downgrade your SGS3 to stock Android OS if you want to restore the warranty of your phone (the warranty gets void when gaining root access) or if you want to reflash a stable version of the Jelly Bean firmware. The 4.1.2 XXEMF6 might be just the right choice as the software comes without bugs and issues and also brings the latest features, apps and capabilities on your Galaxy S3 smartphone. Just follow the next guidelines and learn how to manually downgrade your handset to stock Android ROM.

But before starting the proper update operation, learn how to prepare your phone by taking care of the pre requisites – use the list from below.

  • This guide will work on rooted and un-rooted smartphones so you don’t have to worry about this aspect.
  • By flashing the JB 4.1.2 XXEMF6 firmware you will downgrade your Galaxy S3 to stock and official Android OS, so this is not a custom ROM.
  • Because of the mentioned aspect, by completing this tutorial you will be able to revoke root access, relock the bootloader and restore the warranty back.
  • Even though you are dealing with an official update, a backup is still required. There are situations in which the data gets corrupted so for avoiding the unpleasant situations, use backup and restore apps from Google Play and save everything you might need afterwards.
  • On the update operation, Odin will be used so a Windows running computer, your Galaxy S3 and the USB cable must be near you.
  • Since this is a manual installation procedure, for being able to succeed with the same, on your computer deactivate the security tools and protection.
  • Also charge your phone if the power left is less than 60%; else skip this step.
  • Furthermore, go to “Settings -> Applications -> Development -> USB debugging” and enable the USB debugging option.
  • Complete the next steps only for installing the Android 4.1.2 Jelly Bean XXEMF6 Firmware on the Samsung Galaxy S3 model number I9300.

Well, now you know how to prepare your handset for the update operation. Therefore you can safely begin the tutorial for learning how to update the S3 to stock JB 4.1.2 OS; remember this is not a 4.2.2 based ROM, it’s a previous official variant of the Android platform that is stable and runs smoothly on the mentioned device.

How to Downgrade Galaxy S3 to stock JB 4.1.2 XXEMF6 Firmware

  1. First on your computer download the update file from here.
  2. Then, unzip the firmware package on desktop.
  3. Up next, on the same computer install the Galaxy S3 drivers via Samsung KIES; skip this step if the drivers are already flashed.
  4. Finally download Odin.
  5. Unzip and install the program and in the end run the same.
  6. Turn off your handset as you need to reboot it in download mode.
  7. After turning it off, wait a few seconds.
  8. Then reboot by pressing on Volume Down, Home and Power buttons at the same time.
  9. In this way you can enter Galaxy S3 download mode.
  10. Odin must be running on your computer while you will connect your smartphone with the PC via USB cord.
  11. Once the connection establish, on Odin the ID:COM section must be yellow or blue and the “added” message must be displayed.
  12. If not it means that Odin didn’t recognized your S3 and you will have to reflash the drivers on the computer; then reapply the steps from the beginning.
  13. Proceed by selecting (from Odin) the PDA option.
  14. Pick the update file from desktop.
  15. On Odin the re-partition box shouldn’t be checked.
  16. Start the update operation by clicking on “start”.
  17. Wait until the “pass” message will be displayed on Odin.
  18. Then you will know that the installation procedure is over so you will be able to remove the USB cable and reboot your Galaxy S3 on Android 4.1.2 Jelly Bean XXEMF6 firmware.
  19. If Odin gets stuck: close the program, unplug the USB cable, force restart your device, install the drivers on the computer and re-try the update operation from step 1.
  20. If your phone gets stuck in a boot loop: reboot in recovery mode (press and hold Power, Volume Up and Home buttons) and from there select “wipe data factory reset” and “wipe cache partition”; next, return to main menu of recovery and choose “reboot system now”.

Good job, now you know how to downgrade Samsung Galaxy S3 I9300 to stock and official Android 4.1.2 Jelly Bean XXEMF6 Firmware. Do stay close as soon we will be checking on how to manually update your device to Android 4.3 JB software.

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