Samsung Galaxy S4 LTE will receive the Android 4.4.2 KitKat update by the end of March. However, if you wish to upgrade your smartphone before that, you can update Galaxy S4 LTE to XXUFNA5 Android 4.4.2 with this leaked official firmware. I9505XXUFNA5 is the next update after the XXUFNA1 Android 4.4 KitKat update.

Prerequisites to update Galaxy S4 LTE to XXUFNA5 Android 4.4.2:

Downloadand install USB drivers for SGS4 in your computer.Make sure to takebackupof any important files on your smartphone.Enable USB debuggingoption by pressingMenu>Settings>Applications. Navigateand tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Ensure that your Samsung Galaxy S4 LTE carries more than 70% of charge.

How to update Galaxy S4 LTE to XXUFNA5 Android 4.4.2 leaked firmware:

Required files:download the I9505XXUFNA5 Android 4.4.2 leaked firmware file fromhere.Also, download theOdin3 v3.09 for installation fromhere.

Install Odin on your computer.Switch your Samsung Galaxy S4 I9505 off and boot it inDownloadmode: press and holdVolume Down, PowerandHomebuttons together.When connected successfully, you will get a message in Odin sayingAdded!!.(In case you don’t get it, try another USB port. If that doesn't help either, then re-install USB drivers).On your Odin;Click onAPand select theAndroid 4.4.2 XXUFNA5 test firmware file namedAP_I9505XXUFNA5_373648_REV06_user_low_ship_MULTI_CERT.tar.md5;Now click onBLandloadBL_I9505XXUFNA5_373648_REV06_user_low_ship_MULTI_CERT.tar.md5;Next, click on CPand loadCP_I9505XXUFNA5_373648_REV06_user_low_ship_MULTI_CERT.tar.md5;Finally, click onCSCand select CSC_OXA_I9505OXAFNA5_373648_REV06_user_low_ship_MULTI_CERT.tar.md5.DisableRe-Partitionon Odin and hit theSTARTbutton to initiate the flashing process.When I9505XXUFNA5 Android 4.4.2 update installation is successfully completed, you will get aPASSmessage.Samsung Galaxy S4 LTEwill restart automatically and you can then disconnect your device from computer.

Note:Incase your device gets stuck at boot screen after installation of leakedfirmware, perform data wiping tasks: turn off S4 and reboot it into recovery mode. In recovery, select thewipe data/factory reset. Go back and reboot your smartphone.