Install UCDLK3 Android 4.1.1 Jelly Bean on AT&T I747 Galaxy S3

AT&T Samsung Galaxy S3 I747 subscriber get ready for official Android 4.1.1 Jelly Bean ride. Samsung now rolled out  very first Android 4.1.1 Jelly Bean firmware for AT&T (USA) Galaxy S3 I747 – I747UCDLK3. This firmware build upgrade your Galaxy S3 I747 from Android 4.0.4 ICS to Android 4.1.1 Jelly Bean. That ultimately means, you can now enjoy various Jelly Bean features including smoother interface, advanced voice recognition and search functionality, better keyboard, improved and actionable notifications area. This I747UCDLK3 Android 4.1.1 Jelly Bean firmware update available over Kies but if you unable to update via that then read through this article for a manual update. So, finally you now able to get rid of Android 4.0.4 ICS and move on even better Android version which is Android 4.1.1 Jelly Bean.

Related: How To Root Galaxy S3 I747 UCDLK3 Android 4.1.1 Jelly Bean Firmware

In this article we will guide you to install I747UCDLK3 official firmware update in Galaxy S3, model number I747. For this, we will use a tool called ODIN that will help us to flash the stock 4.1.1 firmware in Galaxy S3 I747. However, in this process you may lose all your existing installed apps and personal settings. You should follow this guide carefully to properly backup your data that you can restore later.


Android 4.1.1 UCDLK3 Firmware Details:

Version: 4.1.1
Date: 2012-11-16


This tutorial is only for Galaxy S3, model number I747. Don’t try this guide in any other Android device. Check your device’s model number in: Settings » About phone. Also, we are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. Although, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

Pre Requisites:

Backup your data first using below mentioned instructions, so that if you lost any data you can recover it easily.

SMS & Call LogUse SMS, MMS & Call Log Entries Backup & Restore App
Contacts & SettingsUse Android default backup options.
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


  1. Make sure your device have at least 80% battery power. [How to Check Battery Percentage in Android Device]
  2. You already have USB Driver Installed for Galaxy S3 in your PC. [Download USB Driver]
  3. Make sure USB Debugging is enabled. [Guide]

If you follow everything that we mentioned above, you are ready to move into next page of this guide where we summed up detail instruction on how to flash Jelly Bean UCDLK3 Android 4.1.1 official firmware update for Galaxy S3 I747.

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  • ScoobyDoo

    My S3 has stock ICS with just root access. I was unable to update it to Jelly Bean using kies. In the method defined above I would loose all existing apps, games, game progress etc. which would not happen if I update via kies.

    Is there a way to update via kies only?

    • arafat21

      Actually! Official update don’t erase data but we warn users as precaution. As you own a rooted S3, why don’t you use Titanium Backup to backup your apps and its data?

      • ScoobyDoo

        Thanks for the reply Arafat.

        I’m not too keen on taking and restoring back up due to 2 reasons:
        1. Too many applications to take the back up.
        2. They would loose their Google play reference and I would stop receiving updates.
        I can restore the reference using Titanium back, but then again it’s more work.

        Feel free to correct any of the above statements. :)

        Also just to confirm, what you are saying is that following the above method I might not loose my apps and games progresses. Taking backups is more precautionary than required.

        • arafat21

          I can’t comment on point 1 but for point 2, I think you can use this app:

          • ScoobyDoo

            Thanks again. I’ll checkout the app.

            BTW.. I used the above method to update to JB and it worked like a charm.
            Thanks for sharing.

          • arafat21

            Thanks for your kind word. We always try our best to satisfy our visitor.