T-Mobile Samsung Galaxy S4 received official Android 4.4.2 KitKat update over-the-air. Named as UVUCNB4, this update brought T-Mobile Samsung Galaxy S4 M919 to the very latest Android 4.4.2. The update brings in major stability improvements and bug fixes along with some new features and capabilities. If you want to manually update Galaxy S4 to UVUCNB4 Android 4.4.2, this step by step guide will help you.-Recommended: WhatsApp for Android Major Security Flaw Lets Other Apps Read the Messages

Prerequisites to update Galaxy S4 to UVUCNB4 Android 4.4.2:

Please check these prerequisites before going forward to the T-Mobile update guide.

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 T-Mobile Samsung Galaxy S4 carries more than 70% of charge.

How to update Galaxy S4 to UVUCNB4 Android 4.4.2:

Required files:download the UVUCNB4 Android 4.4.2 firmware file for T-Mobile Galaxy S4 fromhere.Also, download theOdin3 v3.09 for installation fromhere.

Here are the steps to update Galaxy S4 to UVUCNB4 Android 4.4.2 KitKat latest official update:

Unzip Odin on your computer and install it.Unzip firmware zip file in the same folder as Odin.Switch yourSamsung GalaxyS4 M919 off and boot it inDownloadmode: press and holdVolume Down, PowerandHomebuttons together.Connect your device with computer. 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 onPAand select theAndroid 4.4.2 firmware file for Galaxy S4.Click onStartto initiate the update process.When Android 4.4.2 update installation is successfully completed, you will get aPASSmessage.You can now disconnect yourSamsung Galaxy S4and reboot it.

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.