Samsung Galaxy S3 Update: IBT reported that a new upgrade can be made to Samsung's S3 SGH-I747 (AT&T) model. Users can now upgrade their device by installing Android v4.4.4 KitKat Dirty Unicorns custom ROM. According to Team Android, the new custom firmware is based on v4.4.4 Android KitKat.

Here are the things to remember before installing custom ROM:

• 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 going forward for custom ROM installation.
• This new Dirty Unicorns Android 4.4.4 KitKat firmware has to be installed on the Samsung Galaxy S3 SGH-I747 (AT&T) variant 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.
• Users make sure they have installed USB drivers on the PC, or else your phone (Samsung Galaxy S3 SGH-I747) smartphone will not be recognised 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 mid-way.

Note that this ROM updates are not coming from Samsung and have nothing to do with the already mentioned company. This report is only made to inform users of possible updates and this site is not liable for any damages that these installations may cause.

Following are the steps to install Android 4.4.4 KitKat Dirty Unicorns Custom ROM:

1: Download Android v4.4.4 KitKat Dirty Unicorns custom ROM (here) and Google Apps (here) in to your PC.

2: Connect Samsung Galaxy S3 I747 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]

3: Then, 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.]

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

5: Then perform the regular Recovery Mode sortie by press holding 'Volume (up)', 'Home' and 'Power' buttons.

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]

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

8: Then to 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.]

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

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 same procedure to install Google Apps. [Note: use Volume keys to navigate and power button to select options.]

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.