How to root Samsung Galaxy S2 GT-i9100 on official Jelly Bean

Older methods to root Galaxy S2 on Ice Cream Sandwich stopped working, as the exploits were rendered useless by Samsung in their latest Jelly Bean update. So, if you have updated your Samsung Galaxy S 2 to official Jelly Bean 4.1.2 and want to root your phone, you are at the right place.The process involves using Odin Flash tool; any prior experience with the tool will make the process a cakewalk, but you don’t need to get disheartened if you haven’t used that tool before as we are here to help you out with each step.

Before you proceed:

  • This guide is for the international version of the phone only.
  • Make sure that your phone is not low on battery.
  • Make sure you follow the instructions on a Windows PC. Windows 7 is recommended, but is not necessary.
  • Rooting voids your manufacturer warranty.
  • Neither we at TechLauncher nor any Developer will be responsible for any damage caused to your phone. Follow the guide at your very own risk.
  • Backup any important data on your mobile. It’s better safe than sorry.

Steps to root Samsung Galaxy S2 GT-i9100:

  • Install drivers for your Galaxy S2 using pdanet. Though pdanet is a tethering tool, it is found to install drivers for almost all android phones out there.
  • Download Siyah Kernel and to flash it, you will also need to download Odin. Please note that this kernel is meant only for the international version of Samsung Galaxy S2. You can confirm that by going to Settings> About Phone.
  • Extract the root package you downloaded above till you get a .tar file along with some other files.
  • Extract Odin zip file. From there, run the Odin3 v3.07.exe executable file.
  • Power off your S2. A vibration of the device will confirm that the shut down has been completed. To boot into download mode, press Volume Down + Home + Power button till you see a warning message on your screen. Press volume up button to ignore that scary message and to proceed to the download mode. We need to boot into donwload mode so that Odin can flash files to your device.
  • Connect your phone to the computer using USB cable. At this point of time, ID:COM box in Odin window should turn yellow indicating that the connection of the device has been detected.
  • Click the PDA button in Odin and select the .tar file you extracted in step 3. 
  • Ensure that Auto Reboot and F. Reset Time have been enabled. Everything else should be left as it is.
  • Click the Start button in Odin to begin the flashing process and cross your fingers. Wait for the process to complete. When a PASS message appears in Odin, you are good to go. Go ahead and disconnect your S2 and reboot it.

You can rejoice now as you have finally rooted your device. If Odin is not able to detect your device, try re-installing your drivers and then proceed further. Stay tuned for more guides for modifying and updating the Galaxy S2 (international version).

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