Galaxy S2 I9100 How to Root UHMS9 Android 4.1.2 official firmware

You got updates about UHMS9 Android 4.1.2 official firmware a couple days ago. On seeing UHMS9 Android 4.1.2 firmware updates, most of you install these updates on Galaxy S2 I9100, after installing new updates root access on that device is removed. Therefore, you have to complete ‘Root’ process again. Whether you have installed UHMS9 Android 4.1.2 firmware updates on Galaxy S2 I9100 and now looking to Root then follow remaining tips. These tips guide you to root Galaxy S2 I9100 device that runs on UHMS9 Android 4.1.2 firmware.

While rooting, we use to flash a small .tar file via ODIN utility. As ODIN utility works only on Windows optimized PC. The process of rooting requires minor changes in device settings. Apart from this, you should follow the steps below mentioned one after another:

  • Firstly, install Galaxy S2 USB Drivers on your PC. It is step to connect PC and Galaxy S2 I9100 to share important files or folder.

Download Galaxy S2 USB Drivers

  • Activate USB debugging mode on Galaxy S2 device to transfer files between PC and Android phones.  It helps to fix connection error between PC and Android device.
  • Ensure that device to be rooted has more than 80% of battery power. If device becomes non functional due to battery shortage during Rooting process, some unexpected error comes that makes device almost dead.
  • As important steps, you have to gather all essential phone memory data in another storage media to restore later it on after rooting. It is seen that earlier phone memory data will no longer exist after rooting process gets completed.

If you have taken these steps then you may move to root Galaxy S2 I9100 on UHMS9 Android 4.1.2 Firmware. Now follow the below mentioned tips and completes Rooting process.

How to Root Galaxy S2 I9100 on UHMS9 Android Jelly Bean firmware:


Step 1

Exercise of Rooting begins with installing ‘Rooted SpeedMod Kernel’ for Galaxy S2 I9100 followed by ODIN utility.

Download Rooted SpeedMod Kernel 

Download Odin 3.07

Step 2

Now extract Odin zip file that appears as Odin3 v3.07.exe

Step 3

Then Switch Galaxy S2 device off. It takes usually 5 to 6 seconds to switch off.

Step 4

Run Galaxy S2 device into download mode. In turning device on, you need to press and hold Volume Down and Home button. When you get warning message press Volume Up buttons to enter Download Mode.

Step 5

Now run extracted Odin3 v3.07.exe with administrative power then connect Galaxy S2 with PC. You may make a connection through USB cable. When connection between both devices is made, you get ‘Added’ message at bottom part of Odin box. You also get COM port with a related number.

Step 6

Now select file containing .tar extension as shown below from odin zip. For this, click on PDA button then after choose it:


Step 7

In existing Odin window, you need to check against ‘Auto Reboot’ and ‘F.Reset Time’ box.

Step 8

After applying check against both options click Start button. After clicking, this process of flashing begins.

Step 9

When Rooting process gets completed then your device automatically restarts. In fraction you see ‘Pass’ message in extremely top left side of Odin window. After seeing ‘Pass’ message that appears in green background, you have to disconnect PC and Galaxy S2 devices by removing USB cable.

When above methods applied in a similar way, your Galaxy S2 I9100 device functioning on UHMS9 Android Jelly Bean will be rooted.

Caution: The tips guide you to root the Galaxy S2 device that functions on UHMS9 official firmware. Never try above methods on any other Android version to root. It will lonely your responsibility to root similar mode of Galaxy S2 I9000 device with above mentioned process.

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Topics:  Android