As the Android KitKat update is new for the Galaxy S4, Samsung has been releasing follow-up builds with regular maintenance and bug-fix updates.

Recently, a new Android 4.4.2 KitKat stock build with base firmware I9505XXUFNBA has released for the LTE variant of the Galaxy S4 powered by Snapdragon 600 quad-core processor. Below are details of the new stock firmware.

Samsung Galaxy S4
I9505XXUFNBA Android 4.4.2 KitKat stock firmware available for Galaxy S4. Samsung

Firmware details

Model: GT-I9505

Version: Android 4.4.2 KitKat

Changelist: 481100

Build date: 14 February

Product code: XST




The I9505XXUFNBA build is rolling out via Samsung Kies and as OTA update. Those who failed to receive the update notification for being region-specific, may install the new firmware by following our step-by-step guide.

Note that the I9505XXUFNBA Android 4.4.2 build is an unbranded version of firmware and can be installed on any GT-I9505 units, regardless of country and region.

IBTimes UK reminds its readers that it will not be held responsible for any damage to the device. Before installing the stock firmware, users are advised to verify their devices meet following requirements.


1) Install USB Drivers for Samsung Galaxy S4 to connect the Android device with the computer.

2) Enable USB Debugging Mode on phone to connect it with computer and use Android SDK with it. [Navigate to Settings>> About phone. Tap on Build Number several times until a message appears saying 'You are now a Developer.' Now enable USB Debugging Mode by navigating to Settings>> Developer Options.]

3) As the tutorial is likely to wipe out all data of the phone, create a backup. If the device is having any custom recoveries such as CWM or, TWRP installed then backup data using the recovery.

4) If the Android device powers off due to lack of battery while the installation process, it could damage the device. Therefore, the Galaxy S4 should have above 80% battery charge.

5) The device should be factory unlocked and not locked to a particular carrier.

6) The phone will lose custom ROM with the installation of official firmware. Additionally, the custom recovery will be replaced by stock version.

7) The device will no longer belong to a rooted version with the installation of official firmware.

8) I9505XXUFNBA Android 4.4 2 KitKat firmware works only with LTE version of Samsung Galaxy S4 GT-I9505. As flashing this on any other variant might brick the device, verify the model number of Galaxy S4 by navigating to Settings>> About phone>> Model number.

Download files

I9505XXUFNBA Android 4.4.2 KitKat [Alternative link]

How to install I9505XXUFNBA Android 4.4.2 KitKat on Galaxy S4 LTE (GT-I9505)

Step-1: Extract the downloaded firmware zip using any extracting tool

Step-2: Extract Odin zip to get Odin3 v3.07.exe

Step-3: Switch off Galaxy S4

Step-4: Boot the phone into Download Mode by pressing and holding Volume Down, Home and Power buttons together until the construction Android robot icon with a warning triangle appears on the phone screen. Press the Power button to continue to enter Download Mode

Step-5: Run Odin on computer as an Administrator

Step-6: Connect the Galaxy S4 to computer using USB cable while it is in Download mode. Wait for some time until Odin detects the device. When the phone is connected successfully one of the ID: COM boxes in Odin will turn blue with the COM port number. This step might take some time

Step-7: Select these files extracted from I9505XXUFNBA folder to install on the phone

a) Click on AP and select file with AP in its name

b) Click on CP and select file with MODEM in its name

c) Click on CSC and select file with CSC in its name

d) Click on PIT and select the .pit file

e) Click on BL and select the file with BL in its name

Note: In case you are using an older version of Odin for flashing the firmware, which does not have the above mentioned file format then look below for the abbreviations to the old name format. The file name changes but the functionality and back-end process remain the same.


BL = Boot Loader

CP = Modem

Step-8: Verify Auto Reboot and F.Reset Time checkboxes are selected in Odin. Uncheck Re-Partition option and select it only when a .pit file is used

Step-9: Click the Start button in Odin to begin the installation process

Step-10: When the installation process is completed, the phone will restart automatically. After the home screen appears, unplug the USB cable from the phone to disconnect it from the computer

The Galaxy S4 should now be updated with I9505XXUFNBA Android 4.4.2 KitKat firmware. Navigate to Settings>> About phone to verify the new software version running on the smartphone.

How to fix bootloop issue

After flashing the firmware, if the Galaxy S4 gets stuck at boot animation or bootloop (after step-10), place the device into recovery mode by pressing and holding Volume Up, Home and Power buttons together. In recovery mode, perform data wiping task by selecting Wipe data/factory reset then select Wipe Cache Partition. Now reboot the phone by selecting reboot system now. In recovery mode, use Volume keys to scroll between options and Power button to select the desired option. Note that performing wiping task will erase the phone's internal memory data.

[Source: Team Android]