Galaxy S III

How to Update Galaxy S3 with most stable & Official Jellybean 4.3 XXUGNB6 Android Firmware – Guide

While Samsung Galaxy S3 GT I9300 users are crying foul after the recent OTA updates as many users complained about increased RAM consumption and also stated battery consumption woes. In the latest, Samsung comes with the new update dubbed as XXUGNB6 which ropes in the much needed stability and is dubbed as jellybean 4.3 Android OS. While Kitkat 4.4 for Galaxy S3 still seems couple of months away, let’s check out on how you can update with this firmware manually after checking out the list of quick pre requisites mentioned below.

Jellybean 4.3

Note: Applying this update won’t root the device or void the warranty in any manner. This update can be applied in all international versions of Galaxy S3 GT I9300 variants.

Quick Pre Requisites:

  • All the data in your device needs to be backed up with the help of below mentioned steps manually and not with the KIES.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log – Call Log and Restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

  • Head over to the path “Settings > Applications > Development > USB debugging” in your Samsung Galaxy S3 I9300 so as to enable the USB Debugging Mode.

Disclaimer: We should not be held responsible in any manner for any damage happened to your Galaxy S3 I9300 due to not following the instructions mentioned in the article.

  • Once you have backed up all the data in your device, you now will have to proceed to the next step where we have mentioned the detailed guide which will help you update the device.

Let’s proceed to the next step where we have mentioned the detailed guide which will help you update the device.

Guide to Update Galaxy S3 with Jellybean 4.3 Android OS:

  • Turn off your device so that it can be entered in the Download Mode. Press and hold Home + Power + Volume down buttons to enter the device in the Download Mode. If your Galaxy S3 i9300 enters in the Normal mode, then you need to re try the process of entering the device in the Download Mode.
  • Connect your device to the computer using the original USB cable to see that the ID: COM section turns Blue which indicates that all the drivers have been installed in the computer.
  • Now, in Odin, select Auto Reboot and F. Reset Time options. But, the Re-Partition option must be checked.
  • Click on “AP” to choose the tar file which you got after extracting the firmware file. Once the tar file is selected, click on “Start” to start the process of firmware update. Please note that the whole process of firmware update will take around 4 -5 minutes and once done, you now need to wait to see “PASS” in Odin.
  • If Google Apps gets crashed after installing, you need to turn Off the device so that it can be entered in the recovery mode. Press and hold Home + Power + Volume Up buttons to enter the device in the Recovery Mode. If your Galaxy S3 i9300 enters in the Normal mode, then you need to re try the process of entering the device in the Recovery Mode.
  • In recovery mode, select “Clear Cache/ Wipe Data” options to clear the cache and wipe the data. As soon as the device gets rebooted, you can then head over to the Settings > More to check out the current version details in About Phone section where it will be mentioned as XXUGNB6 Jellybean 4.3 Android OS.

Note: If at all your Galaxy S3 I9300 smartphone gets in the boot loop mode, then you need to turn off the device and then reapply the update from the start. To turn off you can reinsert the battery or say you can long press the power button and repeat the whole process again.

Do let us know in the comments section just in case if you face any issues in the process of firmware update.

11 Comments

11 Comments

  1. MANDARI

    April 19, 2014 at 1:38 pm

    i follow all steps correctly BUT odin respond FAIL. the phone cant boot to recovery mode but it boot to normal mode. what can i do? any assistance please. (this is GT-I9300 and it running android 4.0.4)

  2. Rajat

    April 12, 2014 at 1:52 pm

    The firmware installed without any problems..
    but 1 problem is that it installs some crap application “KLEEK”
    which cannot be uninstalled unless rooted!
    & i think this firmware was made for UAE SGS3..
    nonetheless.. giving it a try.. if found good.. might keep it..
    revert back to the older one otherwise..

  3. faraz shaikh

    April 11, 2014 at 1:11 am

    I tried updating my galaxy s3 as per the given steps. But all the time its showing me failed.
    Please help me out please..

  4. Nico

    April 9, 2014 at 3:23 pm

    I think it’s not necessary to check Re-Partition option since there was no “PIT” file in the package.
    a rule of thumb is it must be checked if there is “PIT” file if it doesn’t leave it unchecked..

  5. Nathan

    April 9, 2014 at 1:29 pm

    I went with unchecked which is normally the case and i believe the update has worked

  6. George Aguilera

    April 7, 2014 at 9:47 am

    Can this update be applied to an unlocked samsung galaxy sgh-I747 (at&t)?

    • Pradeep Neela

      April 8, 2014 at 12:33 am

      no, its not advised to root on the operator unlocked device as it may re lock the device

  7. Emad Ernest

    April 7, 2014 at 8:46 am

    Now, in Odin, select Auto Reboot and F. Reset Time options. But, the Re-Partition option must be checked.

    is it must be or must NOT be??????????

    • Pradeep Neela

      April 8, 2014 at 12:33 am

      it should be checked…

  8. ted

    April 7, 2014 at 7:41 am

    download link does NOT work

  9. Dave

    April 6, 2014 at 10:24 pm

    it says that re-partition option MUST be checked, is this correct as most times it is unnecessary. Thanks

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