If you own the T-Mobile variant of Samsung Galaxy S3, you are in luck! Samsung Galaxy S3 SGH-T999 can now be updated to Android 4.2.2 Jelly Bean with the help of LiquidSmooth custom ROM.The ROM is smooth and brings in some features from AOKP, CMand other custom ROMs.

LiquidSmooth ROM is an aftermarket firmware release based on Android Open Source Project Android 4.2.2 and can now be flashed in Galaxy S3 SGH-T999 devices. The ROM offers some features such asGoogle GCC 4.7 Toolchain, o

ptimized string handling routines (Linaro/Sony), customizable lockscreen buttons and sliders, Chronus clock widget, customizable hardware and software keys,transparent navbar and status bar,customizable navbar ring, navigation bar widgets, customizable power menu &quicksettings panel, quiet hours, volume rocker music controls and much more!

To update T-MobileGalaxy S3to Android 4.2.2 LiquidSmooth AOSP custom ROM, follow this tutorial with easy steps and enjoy a new look and some cool functions for your SGS3 SGH-T999.

Important:thistutorial is only for the Samsung Galaxy S3 model number SGH-T999. Please do not attempt to update any other models or devices following this post.

Prerequisitesto checkbefore you update Galaxy S3 SGH-T999 to Android 4.2.2 LiquidSmooth AOSP ROM:

Create a backup of all important data in your Galaxy device.Download and install USB drivers for Galaxy S3 in your computer.Enable USB debugging option by pressingMenu>Settings>Applications. Navigate and tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Make sure that ClockworkMod recovery is installed.Ensure that your Samsung Galaxy S3 T999 carries more than 70% of charge.

How toupgrade your Galaxy S3 SGH-T999 to Android 4.2.2 LiquidSmooth custom ROM:

Required files:Download theLiquidSmooth custom ROM fromhereand Google Apps package for your device fromthis link.

Connect your SGS3 with computer using a data cable and copy the downloaded files to the sd card. Make sure to store them in the card root, not any folders.Turn your device off and disconnect from USB cable.Boot in to the ClockworkMod by pressing and holdingVolumeUP,Homeand thePowerbuttons simultaneously.Once in CWM mode, perform the Nandroid backup of your current ROM by selectingbackup and restoreoption from the custom recovery main menu.Now, for a full data wipe operation: go towipe data/factory reset. Go towipe cache partitionto clear the cache. Once done, from CMW go toAdvance > Wipe dalvik cacheto perform dalvik wipe.From the sd card selectinstall zip from sdcardand thenchoose zip from sdcard. Find the LiquidSmooth Android 4.2.2 jelly bean zip file and confirm its installation.When the ROM installation finishes successfully, repeat the above step for the GApps package.After the installation is finished, go back to main recovery menu andreboot the Samsung Galaxy S3 T999 by selectingreboot system now.

Ta da! You have flashed the LiquidSmooth AOSP Android 4.2.2 Jelly Bean custom ROM on your Samsung Galaxy S3 model SGH-T999. We hope that you would like the ROM, but in case you want to switch back, just use the Nandroid backup and you'll be good.