The rumors were already there and were later confirmed by Samsung too that the manufacturer has been cooking the Android KitKat confectionery behind the scenes and is planning to serve it by the end of January or early February. The latest leaked firmware from Samsung can be seen as a confirmation to all that we had been hearing so far.

Sammobile has released the leaked version of Android 4.4.2 KitKat firmware for the LTE variant of the Galaxy S4. As for the performance of the firmware, it is very stable and it is another indication that the official release is just round the corner. However,  before the official firmware begins rolling out,  the user of this phone can feel themselves lucky to have the luxury of enjoying the TW-KitKat combo before the owners of any other Galaxy device.

4.4.2 is the latest version of Android currently and having updated your Galaxy S4 to it, you’ll be able to experience the new improvements and features integrated in Samsung’s TouchWiz user interface. Though the new KitKat based firmware with build version I9505XXUFNA1 does not bring any significant graphical changes to the Galaxy S4’s UI, there is one great change that shows itself at the first glance, and that is the new transparent status bar and the whitened icons on it. Another strikingly new thing is the faster user experience. You will also see a camera shortcut on the lockscreen now. Besides, there are several other system based tweaks and optimizations for better performance.


Firmware Details:

Model: Samsung Galaxy S4 GT-I9505
Version: Android 4.4.2
Changelist: 276328
Build date: Thursday, 2 Jan 2014
Product Code: OXA
CSC: OXA (Open Europe)



The leaked KitKat test firmware for the Samsung Galaxy S4 LTE GT-I9505 bears OXA tag as CSC code and that means that it is unbranded and meant for Open Europe regions. If you have this phone and it is not locked to a network operator, you can install it regardless of what country you are from.

Installing the firmware would wipe your phone’s data (contacts, settings, apps. files on internal storage, etc. Therefore we strongly recommend you to back all your data to the external storage. You can use these apps for backing up your device. When you have installed the leaked Android 4.4.2 firmware, we also suggest you to do a data factory reset manually too.


A greater version of leaked test firmware for the Samsung Galaxy S4 LTE GT-I9505 is now available for download. It comes with a smoother performance and some bug fixes.  We recommend you to try the new release from below:

Latest Update:

Another leaked Android 4.4.2 KitKat firmware is now available. The new I9505XXUFNAD build version performs too well and it seems to be the final release. It simply indicates that the official roll out is pretty near.


How to Install:

Grab the firmware file from above and flash it using Odin 3.09. In case you want a detailed installation guide, you can find all required steps here.


Now, the answer to the greatest question: how is the performance of the XXUFNA Firmware on Galaxy S4 GT-I9505, we ran an Antutu benchmark test and you can see that the device now performs better than the previous version. When the official version comes out, we hope it will bring even better results.


Install the new KitKat firmware on your Galaxy S4 and do not forget to share your experience with us and other readers. Cheers!

Also See:

How to Root Galaxy S4 GT-I9505 on Android 4.4.2 XXUFNA Firmware



          • Hi Rakesh,I have a s4 GTI9505,I have recently updated to kitkat using kies.After 5 hours all sound is gone and camera also fails.I even can’t make any plays only with mx player.No sound even with earphone.I had this problem after month from purchase.They repaired and after 1 month same ting happens.I use 32gb memory.They said i have to change my motherboard.I was in samsung care and they said to wait till they get the diagnosis toll.while they return me everything was ok.But after 1 hour all gone.The memory card and sim card slot gets heat with 500 Celsius and i cant put it into my pocket.While i update and it fails the sound came again and stays for 15 days.And now finally gone.I recently downloaded a firmware and flashed but it is like the same.Pls help me.I have changed memory card too.I tried hard/soft reset wiping data many times.

          • Well the issues you described point to some hardware related bug. What is the version of your current firmware version.

          • Hi Rakesh.. 🙂 Can I ask for your help.. because I need to unlock my sim Samsung S4 but unfortunately I don’t have perso SHA256 off and on on my network lock menu.. model GT-19505 and the version is 4.4.2 kitkat.. I bought my phone in the Phil. and now I’m in other country.. please help me.. thank you..

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