Samsung Galaxy S3
Samsung Galaxy S3Wikicommons/Vinith Devdas

A new Android v4.4.4 KitKat SlimKat custom ROM has been made available on Samsung's 2012 flagship smartphone- Galaxy S3 SGH-T999.

According to Team Android, the new SlimKat custom firmware is based on v4.4.4 Android KitKat and brings in loads of customization options such as-

  • SlimCenter
  • More camera features
  • System-wide key board controls
  • Custom shortcuts, SlimPie options
  • The Real Dark Slim themes
  • Performance tweaks and many more improvements to enhance user-experience

Prerequisites (things to remember before installing Custom ROM in to the device):

  • Though installing custom ROM improves the device's performance and UI experiences, it makes the company warranty void and they will no longer be liable to provide updates in future [users can restore warranty by flashing the device with stock-ROM].
  • Make sure the device is rooted before customizing ROM installation
  • This Android 4.4.2 KitKat SlimKat firmware has to be installed on the Samsung Galaxy S3 SGH-T999(T-Mobile model) only; if tried on other devices, it might get bricked [To check your device model: Go to Settings >> About phone >> model number]
  • Installation of custom ROM requires clearing of memory in the smartphone, so make sure to back all the data by installing Clockwork Mod (CWM) Recovery/ TWRP in the smartphone.
  • Make sure to install USB drivers on the PC, or else your phone (Samsung Galaxy S3 SGH-T999) smartphone will not be recognized by the computer.
  • Make sure your device has more than 80 percent battery, or else there is chance of smartphone getting temporarily bricked if the installation process is interrupted in the mid-way.

[Disclaimer: This procedure is very technical and should be performed by a person with sound knowledge of rooting (or manual software installation) Android devices. If the step-by-step installation process is not followed properly, there are chances of the smartphone getting bricked or being permanently irreparable. International Business Times, India Edition cannot be held responsible for any damage or claims from readers if the procedure does not yield the required results or if the smartphone is bricked. Hence, users are advised to proceed with caution.]

Step-by-step installation procedure of Android v4.4.4 KitKat SlimKat custom ROM for Samsung Galaxy S3 SGH-T999:

Step 1: Download Android v4.4.4 KitKat SlimKat (here) and Google Apps (here) in to your PC.

Step 2: Connect Samsung Galaxy S3 T999 to PC via USB cord.

[Note: Before plugging the phone to the computer, be sure that you have installed USB driver software, if not, click here to download the firmware]

Step 3: Place Android 4.4.4 KitKat zip file and Google .zip file into the phone's SD card memory. [Note: Users are advised to paste the .zip file in SD card root, not in any other folder.]

[Note: Before installing the custom software, be sure that the device must have been rooted and has installed ClockworkMod Recovery tool.]

Step 4: Now, turn off the device and disconnect from the PC.

Step 5: Perform the regular Recovery Mode sortie by press holding 'volume (up)', 'home' and 'power' buttons.

Step 6: After entering the RECOVERY mode, clear the phone memory, by choosing 'wipe data/factory reset' option.

[Note: use Volume keys to navigate and power button to select options, while operating under Recovery Mode]

Step 7: Now, clear the cache memory by selecting 'wipe cache partition'

Step 8: Go back to ClockworkMod recovery, and select 'advanced' and tap 'wipe dalvik cache' [Note: This step is optional, but many recommend this procedure so that user will not face boot loops or any other errors in the middle of custom ROM installation]

Step 9: Come back to main recovery screen and then tap 'install zip from SD card'

Step 10: Then tap 'choose zip from sdcard' and go to Android 4.4.4 ROM .zip file in SD card and enter the installation process. Repeat the procedure to install Google Apps [Note: use Volume keys to navigate and power button to select options]

Step 11: Once done with the installation process, navigate to '+++++Go Back+++++' and re-start the device by opting 'reboot system now' seen in the recovery menu.

Now, your device (Samsung Galaxy S3 SGH-T999) will take at a few minutes to complete the booting process.

Head to Settings >> select About phone to confirm the installation of Android 4.4.4 KitKat SlimKat custom ROM.

[Credits: Team Android]

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