SlimKat is one of the few first custom firmwares that were available on Android 4.4 KitKat. Rich with features, SlimKat gives stock experience of KitKatwhile offering a stable and speedy performance. Here is how you canupdate Galaxy S3 I747 to Android 4.4.4 KitKat based SlimKat custom ROM.

Before you read on to update Galaxy S3 I747 to Android 4.4.4 based SlimKat, here are some of the features and details of this ROM.

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SlimKatAndroid 4.4.4 KitKat features:

SlimKatcustom firmware comes with a plenty of new features based onAndroid 4.4.4KitKat. The few primary highlightsinclude:

The Real Dark SlimCustom ShortcutsSystem-Wide Keyboard ControlsSlimCenterCamera Features

Prerequisites to update Galaxy S3 I747 to Android 4.4.4 KitKat based SlimKat:

Backup any important datafrom your Samsung Galaxy S3SGH-I747 as a complete wipe will be required during the flashing process.Enable USB debugging option on your device:Settings>DevelopmentOptions>USB debugging.Samsung Galaxy S3 must berooted, unlocked and installed with a recovery tool likeTWRPorCWM.Your device must be charged to at least 60% of power.

Note:this tutorial is focused on AT&T Samsung Galaxy S3SGH-I747; kindly do not try this guide on other Android &Samsungdevices.

How to update Galaxy S3 I747 to Android 4.4.4 SlimKat:

Required files: downloadthe SlimKatAndroid 4.4.4 KitKatcustom firmware for GalaxyS3 I747 fromhereand save it on your computer. Also downloadGAppspackage. Do not extract the contents.

Here is how toupdate Galaxy S3 I747 to Android 4.4.4 based latest SlimKat custom firmware.

ConnectGalaxyS3 to your computer using a USB cable and copy the zip file to your phone’s SD card.Disconnect the USB cord andpower off yourGalaxy S3.Boot it into recovery mode bypressing and holdingVolume Up+Home+Powerbuttons together.Perform aNandroidbackupof your current OS:Backup>backup and restoreonClockworkModrecovery.Wipe data task: from CWM recovery menu, selectwipe data / factory resetand confirm the process. Then go on towipe cache partitionandwipedalvikcache.From recovery menu, selectinstall zip fromsdcardfollowed bychoose zip fromsdcard.Locate the SlimKatAndroid 4.4.4 custom firmware and confirm the flashing process.Return back to main recovery menu and reboot your AT&T Samsung Galaxy S3 into the new custom ROM. First boot takes a good 5 minutes so please be patient.

How to restore:If you want to return to previous OS on yourSGS3, boot intorecovery, selectbackup and restorethen restore your previous ROM by selecting it from the list.

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