How to Root Samsung Galaxy S II (i9100)

    The GALAXY S II is a popular-mid range smartphone launched by Samsung targeting the common man. It comes with a 1.2 GHz dual core ARM Cortex-A9 processor that uses Samsung's own 'Exynos 4210' chip, 1 GB RAM and with 16/32 GB internal memory options. It boasts an 8-megapixel Back-illuminated sensor camera with single-LED flash that can record videos in full high-definition 1080p at 30 frames per second. There is also a fixed focus front-facing 2-megapixel camera for video calling, taking photos as well as general video recording, with a maximum resolution of 640x480 (VGA). Galaxy S II employs the TouchWiz 4.0 user interface, following the same principle as TouchWiz 3.0 found on the Galaxy S, with new improvements, such as hardware acceleration.

This tutorial will guide you to root your galaxy S II easily and safely. Know more about rooting on our article.

Before you proceed to rooting:

Warning: Rooting may result in bricked devices. I will not be responsible for any damage to your device caused from rooting. Do it at YOUR OWN RISK. Rooting also voids your device’s warranty. However you can always unroot it and claim your warranty back.

1. Check whether your device has a battery level of 60% or more.
2. Download the following files and place them on the desktop of your pc: 

• jeboo_kernel_i9100_v1-2a.tar
• Odin3_v3.09.zip 
• UPDATE-SuperSU-v1.25 (Do not extract this file. Transfer this file to the root of the SD card of your device.)  

Rooting is done in two steps:

Step 1-Install CWM on device: 

1. First, enter into Download Mode by pressing and holding the Volume Down + Home + Power             buttons for a few seconds. You will receive a warning message.
2. Click volume up to continue. 
3. Extract the file named Odin3_v3.09.zip.Run Odin3_v3.09.exe file on the computer by double             clicking on it.
4. Connect your device to the computer using USB cable while it is in the Download Mode. Once the     Odin detects the phone, you will get an "added" message.
5. Verify that ONLY the Auto Reboot and F.Reset Time options are checked in Odin. (Do not check       any other boxes. This is really important)
6. Click the PDA button and select the jeboo_kernel_i9100_v1-2a.tar file which you have                       downloaded. 
7. Hit the Start button in Odin to begin the installation process. Once the installation process is               completed, the phone will reboot automatically. Do not unplug the device during installation.

After rebooting your device should be having CWM Recovery installed. 
However the device is still not rooted. You may proceed to step 2 in order to root your phone.

Step 2-Rooting your device:

1. Power off the phone and then boot into CWM Recovery by pressing and holding the Volume up +       Home + Power button until you enter recovery.
2. Scroll down and select 'Install zip from SD card'. Your touchscreen won’t work in here (So don't         panic).Use the volume keys to scroll and the Power button to select.
3. Select 'Choose zip from SD card' by pressing the Power button again and then scroll to UPDATE-       SuperSU-v1.25.zip and select it.
4. Confirm installation by selecting 'Yes' on the next screen.
5. Once installation is complete, return to the main recovery menu and select 'reboot system now'           option.

Your device is now rooted. Check your installed apps. You will find an app named Superuser. Open it and update the binary if requested by following on-screen instructions. 

About the Author

Aquib Usman

    I love spending time with my smartphone. Apparently, the feeling isn't reciprocated especially because I spend time tweaking it,rooting it,sleeping on it and repeating the same. However I keep learning things, new tricks ,about new apps and all which I like to write down. And I think I am good enough on making :D and breaking problems related to android smartphones ..
You can follow me on : Facebook and Google+