Tips & Tutorials

Update Galaxy S3 LTE I9305 to XXUFNI3 Android 4.4.4 KitKat Official Firmware

You wouldn’t believe even if we told you, Galaxy S3 I9305 (LTE cariant) has been updated to the most latest XXUFNI3 Android 4.4.4 KitKat firmware. Yes, Android 4.4.4 has arrived on the Samsung Galaxy S3 I9305. Rather than updating the Galaxy S5, which is logical, Samsung has decided to give this aging phone a whole new look and feel that too, with Android 4.4.4. The International Galaxy S3 is now behind the LTE Variant in terms of which revision it runs. People lost hope in expecting a KitKat update but the reality is now contradictory. There is no time to wait for this update to come through Samsung KIES and OTA (Over-the-air) update, you can follow our manual guide to get your phone running. We will guide you through every step while also including every detail. Keep in mind that I9305XXUFNI3 is an official firmware update from Samsung, not a modified or custom ROM. You can install XXUFNI3 Android 4.4.4 on Galaxy S3 LTE I9305 official KitKat firmware with this easy tutorial and also root it. This is an unbranded firmware which means you wont be getting any extra bloat.

As you continue reading below, we will guide you through the entire process of how to update Galaxy S3 LTE I9305 with XXUFNI3 Android 4.4.4 KitKat using ODIN flashing tool. We also have some great tips on how to backup your Android devices and some more important tips that you have to keep in mind. Don’t forget to backup all your apps and personal data as a precaution. This firmware is Official Samsung firmware and not a custom ROM thus it won’t be needing a custom recovery like CWM. Mega updates like these tend to completely wipe out the whole phone so do backup your photos, downloads and even documents. Let’s continue with the tutorial now.

XXUFNI3 Android 4.4.4

Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We ( or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Android 4.4.4 XXUFNI3 Firmware Details:

Model: GT-I9305
Model name: GALAXY S III
Country: Germany
Version: Android 4.4.4
Changelist: 2760029
Build date: Fri, 12 Sep 2014 04:17:12 +0000
Product Code: DBT

If you plan on rooting this phone or are still confused for why to root Galaxy S3 I9305, read: Benefits of Rooting Your Android Device.

Looking for the root tutorial? Go to the following link for a detailed tutorial with step-by-step instructions on how to root Galaxy S3 I9305 Android phone:

Samsung Galaxy S3 USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for Samsung Galaxy S3 properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download Samsung Galaxy S3 USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

Samsung users can also back up data using Samsung KIES. If you backup data manually, you get more options what to choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and KitKat.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!

All set and ready? Good. You can now head over to the next page and update Galaxy S3 I9305 to XXUFNI3 Android 4.4.4 official firmware update.

About the author

Taimur Akmal

Devoted writer, enjoys developing code. Appreciates excellent food, exceptional coffee and great company. He is also into sublime design and nicely built cars.


  • It would be wonderful whether someone could write here some impression of usage, I mean some kind of information on battery discharge and/or on performance maybe with difference from the previous version 4.3 , 4.1.2 or earlier through Antutu Benchmark perhaps.

  • At the end i upgraded it and nothing changes… changes on wifi/3G connection and it seems worse than before because Play Store has difficulties on opening, sending and receiving messages as well…everything has a delay -.-” and now that i’ve 4.4.4 i cannot downgrade it -.-“

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