<--Google Page ads-->

Update Galaxy S3 with XXUGNA7 Official Android 4.3 JB Firmware

Galaxy S3 I9300 just received a new OTA update, as the XXUGNA7 firmware has been officially made available by Samsung. In case you are wondering no, it is not Android 4.4 KitKat software, though the roll out of the same update is being expected by all of us – probably the OS will be released next month. Anyway, that means XXUGNA7 is just another Android 4.3 Jelly Bean firmware and well, that’s true. So, in case you haven’t received the Android 4.3 OTA by now and you want to flash the official XXUGNA7 update on your Samsung Galaxy S3 I9300 without waiting any more time, follow the guidelines from below because I will show you how to install the firmware manually.

This guide is an official one even though you will use a manual update method. Basically, the XXUGNA7 Android 4.3 firmware is the same with the OTA update that is currently available for your Galaxy S3. Since we are not dealing with a custom ROM, the flashing procedure will be easy to complete – even if you are a newbie, so don’t worry. Of course, you shouldn’t complete things by yourselves or at least without consulting the steps from below, as if you somehow mess things up, bad things can happen – you can even end up in bricking your Android smartphone.

On the update operation Odin will be used. So, by using this tutorial you will learn how to update your Samsung Galaxy S3 with Odin in order to get the official Android XXUGNA7 Jelly Bean 4.3 firmware – of course manually. Odin is developed by Samsung therefore it is an official platform that can be easily used especially for update installation procedures. Flashing an official software by using Odin is easy, as you will be done in only a few minutes and without dealing with complex or risky procedures.

Now, if we are to talk about Android 4.3 XXUGNA7 JB update, we must say that the firmware is not a major OS improvement released for your Galaxy S3. In fact, the S3 received the Android 4.3 XXUGNA5 OS a few weeks ago, so this new OTA represents only a minor update that comes with several bug fixes and stability improvements. What does this mean? In a few words, with XXUGNA7 Android 4.3 OS your Galaxy S3 will run faster and better. The platform is stable and optimized especially for your Android smartphone. The firmware comes without bugs or things that aren’t working properly and it is preinstalled with the latest features, apps and capabilities that are available on the Android system.

As you can see, you have all the reasons for flashing XXUGNA Android Jelly Bean OS on your Samsung Galaxy S3. Of course, it is not Android 4.4 KitKat, but it should be just perfect until the mentioned OTA will be finally rolled out. Now, since we are dealing with an official Android update, this guide is compatible with both rooted and un-rooted Galaxy S3. But, if your smartphone is rooted, after flashing XXUGNA7 OS the root access will be revoked (that’s why this tutorial can be used for restoring the warranty on your device). Don’t worry, because after that you will be able to root the new XXUGNA7 Android 4.3 firmware – make sure you are using a compatible root method that can be safely applied on your Galaxy S3 that runs on stock XXUGNA7 Jelly Bean OS.

As a general conclusion, by completing this step by step guide, the warranty of your Android device will not get void. Furthermore, you will be able to restore the same, in case it has been previously voided. Good; now you know the general aspects that are related to the present operation and to Android 4.3 official JB XXUGNA7 update. But in order to install the same on your Android smartphone you will first have to take a look and complete the tasks explained during the list from below.

  • It is recommended and also important to backup the SGS3 data – the data that is saved on the internal storage memory.
  • Even though Odin is being used, and it’s unlikely to lose your data when using Odin, in some rare cases, the system of your phone will be wiped out and if that happens, your data will be erased.
  • Because of that you should use suitable backup and restore apps from Google Play for saving the EFS folder, contacts list, call logs, market apps, personal data, info and accounts and basically everything else it’s important for you.
  • After applying the backup, you need to ensure that a Windows based computer can be used. Of course your handset and its USB cable must be somewhere near you – you will have to connect the mentioned devices.
  • On your Galaxy S3 the USB debugging option must be enabled – else the mentioned connection can’t be established. So, go to “menu – settings – developer options” and take care of this task.
  • This is a manual update operation; because of that your Android smartphone must be charged before starting the flashing procedure. So, in case there is less than 50% power left, you need to charge your SGS3 before going any further.
  • On your computer you have to temporarily deactivate the antivirus or antimalware protection. In some cases the security tools are interfering with the installation procedure and we don’t want that to happen.

It is important to know that Android 4.3 Jelly Bean XXUGNA7 has been officially released for the Samsung Galaxy S3 model number I9300. That means that the present tutorial is compatible only with the mentioned Android device; don’t use the steps from below for updating another smartphone or tablet as you can end up in bricking the same.

How to Update Galaxy S3 with XXUGNA7 Official Android 4.3 JB Firmware

  1. On your computer, from here download the update file.
  2. Also, download Odin.
  3. Unzip Odin and then unzip the firmware file on the same folder as Odin (preferable on desktop).
  4. Now, install Odin on your computer.
  5. The Galaxy S3 drivers must be installed on your PC; if you don’t have the drivers, use Samsung KIES and get the same.
  6. Run Odin on your computer.
  7. Turn off your phone and wait a few seconds.
  8. Then press on power, volume down and home buttons at the same time – in this way download mode can be reached.
  9. With download mode entered and with Odin already running on the computer, connect your Galaxy S3 with the PC – use the USB cable for establishing the connection.
  10. Now, take a look on Odin because you need to notice the following: the “added” message is being displayed and the ID:COM is yellow or blue.
  11. If not, Odin hasn’t recognized your device; you will then have to unplug the USB cable, close Odin, re-flash the drivers and repeat the steps from above.
  12. Then, from Odin click on “AP”.
  13. From the window that will be displayed on your computer pick the XXUGNA7 Official Android 4.3 JB Firmware.
  14. Flash the update on your Samsung Galaxy S3 by taping on “start” – don’t make any other changes on Odin.
  15. The installation procedure will be over when on Odin the “pass” message will be displayed and when the ID:COM section will be green.
  16. You can then safely remove the USB cable and reboot your phone.


If you have problems with Odin:

  • Close the program.
  • Also, unplug the USB cable and disconnect your phone.
  • Force restart your smartphone.
  • Run Odin on your PC.
  • Enter your S3 in download mode and repeat the steps from the update tutorial.

If, after completing the flashing procedure your SGS3 gets stuck in a boot loop:

  • Enter your Android device in recovery mode.
  • From recovery mode select “wipe data factory reset”.
  • Return and pick “wipe cache partition”.
  • Go back to main menu of recovery.
  • Select “reboot system now”.
  • Done.

If you are experiencing any other issues and if you don’t know how to deal with your problems, use our dedicated step by step from here, or use the comments area from below.

That was all for today. So, by using this dedicated step by step guide you can learn how to manually update your Samsung Galaxy S3 I9300 to official Android 4.3 Jelly Bean XXUGNA7 firmware. Our work for now is done; stay close as a root procedure will soon be developed and we will update you with a dedicated tutorial. On the other hand, don’t forget to feedback us: tell us how things worked for you and how is the new XXUGNA7 OS running on your Galaxy S3 – just use the comments field from below and share your thoughts with our team and with other Android users.

Samsung Galaxy S3 Articles