After a long wait, Samsung has finally started rolling out the Android 4.1.2 Jelly Bean firmware update for the T-Mobile variant of the Samsung Galaxy S2 with the model number SGH-T989.

Users of the T-Mobile Galaxy S2 can officially update their device through Samsung Kies or by using over-the-air updates. But since the update is still in process, it may take some time to reach all supported devices.

In case you are using a custom ROM and cannot officially update the Galaxy S2 or if you do not see the update available for your device, you can download the firmware and try out the manual installation procedure explained below.

SamMobile has listed some of the key enhancements in the Android 4.1.2 Jelly Bean update for the Samsung Galaxy S2 (SGH-T989):

- Project Butter -- smooth performance and stability

- Full user interface improvements to make it look similar to Galaxy S3 and Note 2

- TouchWiz Nature UX

- Samsung’s S Cloud services

- Improved camera features

- New lockscreen with many customization options

- New features like direct call, smart stay and pop-up play

- New widgets (from Galaxy S3)

- 2 home screen modes

- New notification bar with more notification toggles

- Google Now

Firmware Details

- Version: Android 4.1.2 Jelly Bean

- PDA: T989UVMC6


Certain points are important to consider before performing a manual installation.

- Make sure that you have proper backups for your data.

- Ensure that your Samsung Galaxy S2 has at least 80 percent battery power.

- You must have the USB drivers for your device installed on your computer.

- Ensure that USB Debugging is enabled.

- After flashing the firmware, you will lose custom ROMs such as CM10, Paranoid Android or AOKP installed in your device.

- You will also lose custom recovery such as ClockWorkMod Recovery or TWRP Recovery if you have any.

- After installing it on your Galaxy S2, you will lose root if you have any.

- Ensure that Samsung Kies is not running.

Users should also keep in mind that this tutorial is only for Samsung Galaxy S2, model number SGH-T989. It should not be tried on any other Android device.

Note: IBTimes cannot be held responsible for anything that goes wrong. Users must proceed at their own risk.

How To Perform A Manual Update

1: Download Android 4.1.2 Jelly Bean official firmware for Samsung Galaxy S2 (SGH-T989) and extract the file.

2: Download Odin and extract the file.

3: Turn off Galaxy S2 and put it on the Download Mode. To do this, press and hold the Volume Down + Home buttons together and then press the Power button. After you see a warning screen, press Power button to confirm to enter Download Mode.

4: Run Odin3_v3.04.exe as an administrator.

5: Connect Galaxy S2 to your computer via the USB while it is on the Download Mode. If the device is connected properly, one of the ID:COM boxes will turn yellow with the COM port number.

6: Click the PDA button in Odin and select the “.tar.md5” firmware file that you have downloaded in step 1.

7: In the Odin window, ensure that “Auto Reboot” and “F. Reset Time” checkboxes are selected. In addition, if you are using a .pit file, ensure that repartition checkbox is selected. Otherwise, it should not be ticked.

8: Click on the Start button in Odin to initiate the flashing process. Wait for Odin to flash T989UVMC6 on your Galaxy S2.

That’s all you have to do. After the flashing stops, you will see a “pass” message with a green background in the left-most box at the top of the Odin. Your Samsung Galaxy S2 will now reboot automatically. After you get the Samsung logo on the home screen, disconnect the device from the computer.

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