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Update Galaxy S3 with XXUGNA5 Official Android 4.3 JB Firmware

Even though everyone is expecting Android 4.4 KitKat OTA update for the Galaxy S3 I9300, Samsung is still providing Jelly Bean OS improvements as recently the XXUGNA5 firmware has been officially released and rolled out. The XXUGNA5 Android 4.3 JB update is available for the Galaxy S3 I9300 only in limited regions, so if you haven’t received the mentioned OTA yet, then you will probably have to manually install the same. In that matter I have developed the guidelines from below – in order to show you how to manually flash official XXUGNA5 Android 4.3 ROM on your Samsung Galaxy S3 model number I9300.

So, no Android 4.4 KitKat for you; don’t panic though as the latest Android firmware will be pushed out during the following weeks. But as you know, when coming to OTA releases, the ROMs are being provided in phases and tested, sometime even modified, by each carrier that will made available the upcoming Android platform. So, until the official launch of Android 4.4, this Jelly Bean firmware should be just perfect for your Samsung Galaxy S3. Why am I saying that? Well, basically because XXUGNA5 represents an official Android OS developed and offered by Samsung and not by third party devs.

Because of that, the XXUGNA5 software is stable and smooth so you can safely flash the Android 4.3 update on your Galaxy S3 I9300. Actually the ROM isn’t bringing major changes as there aren’t included new features, apps or capabilities on the XXUGNA5 system. The update is rather designed to offer a more stable Android experience on your Galaxy S3. So the firmware is bringing important stability improvements and promises a better Jelly Bean OS that can provide more power, increased speeds, redesigned web browsing experience and upgraded battery life, since the new system has been optimized especially for your SGS3.

As you can see, you have all the reasons to flash this new official update, even though it is still not Android 4.4 KitKat OS. In case your Galaxy S3 is running on a custom ROM, now the same will be replaced with the stock Android JB OS. Furthermore, if your phone is rooted, now the root access will be revoked. Therefore, complete this procedure only if you want the stock Android 4.3 XXUGNA5 firmware installed and only if you don’t need root access anymore – you can then root the new XXUGNA5 platform but by following a root method compatible with the new Android OS.

On the other hand, this step by step guide can be safely completed as it is compatible with both rooted and un-rooted Samsung Galaxy S3 I9300. The best is that by using the steps from below you will be able to restore the warranty of your Android device – as you know, usually the warranty gets void when you gain root access or perform other unofficial procedures like installing a custom recovery image or updating with a custom ROM firmware. Therefore, you should bookmark this tutorial as who knows when you will need the same.

It is important to know that since we are dealing with an official Android update, you will be able to flash your Samsung device with the mentioned firmware by using Odin which is an official program developed by Samsung. Therefore, you have nothing to worry about as you won’t have to use complex, or custom programs for completing this tutorial. The update procedure is therefore safe and can be applied even by a newbie. For more details and for ensuring that I am right, just check the lines from below.

But before heading to the proper installation procedure, first prepare your device. In this way you can be sure that everything will go as planned. So, the first thing to do is to backup your Galaxy S3 data. I know that XXUGNA5 is an official Android 4.3 update and a backup shouldn’t be required when applying an OTA firmware, but remember that this is an manual installation procedure. So, in rare cases, after performing the same the data might get corrupted. Because of that and for avoiding unpleasant situations from happening, I recommend you to use suitable backup and restore apps from Google play for saving everything that is saved on the internal storage memory of your Galaxy S3 I9300.

Then, just make sure that you can use a Windows based computer, your handset and its USB cable. Of course, you will then have to ensure a connection between your computer and smartphone so because of that on your Galaxy S3 the USB debugging option must be enabled – just go to “menu – settings – developer options”. Also, on your computer the best will be to deactivate the security protection and here I include the antivirus and antimalware tools. Furthermore, your phone must have at least 50% power left; if else, before going any further plug in the charger. Don’t forget that this tutorial is compatible only with the Samsung Galaxy S3 model number I9300 – after all the XXUGNA5 Android 4.3 Jelly Bean firmware has been OTA released only for the mentioned Android device.

How to Update Galaxy S3 with XXUGNA5 Official Android 4.3 JB Firmware

  1. On your computer download Odin.
  2. Unzip the file on desktop.
  3. Then, download the update file by going to this page.
  4. Unzip the firmware file on the same folder as Odin.
  5. On the same computer the Galaxy S3 drivers must be installed – download and use Samsung KIES on that matter.
  6. Good; now on your computer run Odin.
  7. Turn off your smartphone and enter it in download mode.
  8. For download mode: press and hold power, volume down and home buttons at the same time.
  9. Connect your phone with your PC – use the USB cable for establishing the mentioned connection.
  10. If everything is working as expected, on Odin the “added” message must be displayed and the ID:COM section must be yellow or blue.
  11. If not, you will have to unplug the USB cord and close Odin. Then try to reflash the drivers on your computer and repeat the steps from above.
  12. Now, from Odin select the “PA” option.
  13. Pick the XXUGNA5 Official Android 4.3 JB Firmware.
  14. Don’t make any other changes on Odin just click on “start”.
  15. Sit back and relax while the flashing procedure is running.
  16. In the end, on Odin the “pass” message will be displayed; also the ID:COM section will turn green.
  17. Then you will be able to remove the USB cable and reboot your Android device.

Congratulations; you have manually updated your Samsung Galaxy S3 I9300 to XXUGNA5 Official Android 4.3 JB Firmware. Give it a try and test the new stock Android OS. Is it stable, or are there any bugs or issues? Don’t hesitate and feedback us by using the comments area from below. Also, stay close as we will soon bring a compatible root method for your Galaxy S3 that runs on XXUGNA5 Official Android 4.3 JB Firmware.

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