Infamous S4 Google Edition custom firmware can now be flashed on T-Mobile Samsung Galaxy S4 SGH-M919. Infamous S4 is astock Android 4.4.2 KitKat firmware with some RAM tweaks and de-bloating. If you want to update Galaxy S4 to Android 4.4.2, flash this custom firmware on your smartphone.

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Prerequisites to update Galaxy S4 to Android 4.4.2 Infamous KitKat:

Create a backup of all important data in your Galaxy device.Download and install USB drivers forSamsung Galaxy S4in your computer.Enable USB debugging option by pressingMenu>Settings>Applications. Navigate and tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Make sure that recovery tool like ClockworkMod recovery is installed.Ensure that your Samsung Galaxy S4 carries more than 80% of charge.

Guide toupdate Galaxy S4 to Android 4.4.2 Infamous Google Edition custom ROM:

Files required:download these two files of Infamous 4.4.2 custom firmware and Google Apps Package:Infamous Google Editioncustom ROM &Google Apps. Save your files on PC.

Connect yourGalaxy S4 M919to your computer using USB cable and copy the downloaded files to the SD card of your smartphone.Disconnect the connection with computer and turn your Samsung GalaxyS4 off.Boot in to custom recovery mode: press and holdVolume Up, Downand thePowerbuttons simultaneously until Samsung logo shows up. Leave the keys for half a second and hold again. UseVolumekeys to scroll andPowerbutton to select -alternatively you can useQuick Boot appto reboot your Android device in recovery mode.Now perform Nandroid backup of your current ROM: selectBackup and Restore>Backup. Go back to main recovery menu after backup process is done -very important step to restore back to current OS.Data wiping tasks: selectwipe data/factory reset>Yes. It will take a few minutes, once done, selectwipe cache partition.Next tap onAdvance>wipe Dalvik Cacheto wipe Dalvik cache data too.Selectinstall zip from sdcardfollowed bychoosezip from sdcard. Locate the Galaxy S4 Infamous custom ROMfile copied earlier and select it. Tap onyesto confirm installation and wait for the ROM installation to be completed.Once installation process is finished successfully, repeat the above step but chooseGAppsfile instead to install the Google apps package on your SGS4 M919.Return to main recovery menu now and selectreboot system nowto boot up into the latest Infamous Android 4.4.2 custom ROM for Samsung Galaxy S4. It will take a bit of time during the first boot, so kindly be patient.

Important note:If you want to return to previous OS on your SGS4, boot intorecovery, selectbackup and restorethen restore your previous ROM by selecting it from the list.