May 26, 2013

How to Root Galaxy S2 I9100 on Android 4.1.2 Jelly Bean Firmware

Samsung recently started rolling out its official Android 4.1.2 Jelly Bean firmware update for the Samsung Galaxy S2 bearing model number GT-I9100 in several countries. The new official firmware is now available for download through Samsung KIES as well as Over-The-Air (OTA) update.

Samsung Galaxy S2 I9100 users who have already updated their devices with Android 4.1.2 Jelly Bean, may root their devices using the tutorial below.

Disclaimer: Rooting voids the warranty of your device. We and the developer of this rooting procedures shall not be held responsible if any undesirable outcomes may happen to your device. use of this root guide is solely at your own risk!

1) Install USB Driver for Samsung Galaxy S2 on the computer.
2) Enable USB Debugging Mode on the phone.
3) Make a backup of all your important data before following the guide.
4) The Galaxy S2 should be factory unlocked and not locked to any particular carrier.
5) Ensure the battery of the phone is charged more than 80 per cent.
6) The Root Kernel file works only on Samsung Galaxy S2 I9100 running on Android 4.1.2 Jelly Bean firmware. Applying this on any incorrect variant will brick the device. Verify the model number of the Galaxy S2 by navigating to Settings >> About Phone.

File Required
1. Root Kernel for Galaxy S2 I9100: Siyah-s2-v6.0b4.tar or Siyah-s2-v6.0b5.tar
2. Odin 3.07

Steps to Root Galaxy S2 I9100 Running on Android 4.1.2 Jelly Bean Firmware
Step 1: Extract Odin 3.07 file using winrar/7zip/winzip or any other extracting tool.
Step 2: Switch off the Galaxy S2. Then boot the device into Download Mode by pressing and holding Volume Down + Home buttons together and then press the Power button until the device turns on. Now press the Volume Up button to enter Download Mode.
Step 3: Launch Odin on the computer.
Step 4: Connect the Galaxy S2 to the computer using USB cable while it is in the Download Mode. Wait until Odin detects the device. When the device is connected successfully, the ID: COM box will turn yellow with the COM port number. Additionally, the successful connected will be indicated by a message saying Added. If Odin fails to detect the device then re-install USB driver.
Step 5: In Odin, click the PDA button and select the Root Kernel file.
Step 6: Verify that Auto Reboot and F.Reset Time checkboxes are selected in Odin. Also, ensure the Re-Partition option in Odin is not selected.
Step 7: Double-check and click Start in Odin. The installation process will now begin.
Step 8: Once flashing completed, your phone will restart and soon you will see a PASS message with green background in the left-most box at the very top of the Odin. You can now unplug the USB cable to disconnect your device from computer.

Samsung Galaxy S2 I9100 running on Android 4.1.2 Jelly Bean firmware is now rooted successfully. You may now install any app that requires root permission.

Thank's to all fellas at XDA who first tried out this rooting technique. This root method was originally posted via XDA-Developers.


  1. the Siyah-s2-v6.0b5.tar didnt work with my s2 with Android 4.1.2 Jelly Bean Firmware. Odin didnt show PASS. it was telling me to RESET! and my phone didnt turn on to normal mode.

    i had to reboot it in download mode and use Siyah-s2-v6.0b4.tar.

    is there any major difference between Siyah-s2-v6.0b4.tar and Siyah-s2-v6.0b5.tar

    1. Thanks for letting us know. What is your baseband version?

    2. how do i know whether to use b4 or b5? also some videos show a jeboo kernel. how is that different?

  2. Does this tutorial work for all phones running 4.1.2

    1. The Root Kernel file used on this guide work only on Samsung Galaxy S2 I9100 with Android 4.1.2 Jelly Bean.

  3. elow can i use a deffrent (rom) for my DXLS8 i9100 4.1.2?for example rom pacman?so should i up my 4.1.2 to 4.2.2?it is happen?

  4. After Boot the device into Download Mode by pressing and holding Volume Down + Home buttons together and then press the Power button until the device turns on.

    Then a small green logo appeared a second and then the phone asked for a "CONFIRM PASSWORD". and then did not go any further.

    I turned off the phone and turned it on again but it's asked the same password. Can you instruct me how to do next. Thanks

  5. The first root kernel freezes my phone at the "4G" screen. The second loops my boot animation until I pop the battery out.

  6. hello there.can i just root my s2 with DXLS8 baseband 4.1.2 ???it will work or not ?pls reply.need ur help.thanks

  7. I upgraded my Samsung Galaxy S2 from Android from 2.3.6( i think) to Android 4.1.2 with baseband I9100DXLS8 from Samsung service centre in Pattaya , Thailand yesterday.
    After upgrading my Phone, battery is draining too fast(from 100% to zero in 3 hrs) and charging is also very slow. It becomes very hot too after talking for five minutes. Please help.

  8. thank phone has been rooted :D