Regional update for Samsung Galaxy S4 titled XXUFNC6 Android 4.4.2 KitKat has been released. You can update your Galaxy S4 to XXUFNC6 Android 4.4.2 using this guide [Install XXUFNC6 Android 4.4.2 Official Firmware on Samsung Galaxy S4 i9505].

Here is how you can root Galaxy S4 i9505 on XXUFNC6 Android 4.4.2 KitKat.

Prerequisites to root Galaxy S4 i9505 on XXUFNC6 Android 4.4.2: 

• Create a backup of all important data in your Galaxy device.
• Download and install USB drivers for Samsung Galaxy S4 in your computer.
• Enable USB debugging option by pressing Menu > Settings > Applications. Navigate and tap on Developer Options to ensure that USB Debugging is enabled.
• Ensure that your Samsung Galaxy S4 I9505 carries more than 80% of charge.

- Popular Android 4.4 KitKat based custom ROMs.

Root Galaxy S4 i9505 on XXUFNC6 Android 4.4.2 KitKat official:

Files required: download the Android 4.4.2 XXUFNC6 KitKat root pacage from this link. Also download the Odin3 v3.09 for installation from here. Unzip Odin; and unzip the leaked firmware file inside the same folder as Odin.

• Install Odin on your PC and launch it.
• Switch your Samsung Galaxy S4 off and boot it in Download mode: press and hold Volume Down, Power and Home buttons together.
• Connect your SGS4 via a USB cable; when connected successfully, one of the ID:COM boxes will turn yellow with the COM port number. (In case you don’t get it, try another USB port. If that doesn't help either, then re-install USB drivers).
• From that window, click on PDA and locate the root package to root Galaxy S4 i9505 on XXUFNC6.
• Check the Auto Reboot and F. Reset Time options in ODIN, and click on Start button to initiate the root process.
• When root installation is successfully completed, Galaxy S4 will reboot into Recovery Mode and start flashing the root files; Odin ID:COM will turn green.
• When you see the home screen, unplug your Samsung Galaxy S4 I9505.