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This article will teach you how to root Samsung Galaxy S2 on Android Jellybean v4.1.1 and v4.1.2. If you are a owner of Galaxy S2 which is running on Android Jelly Bean 4.1.1 or 4.1.2, you can gain root access using this simple guide. Before you continue with the tutorial, you should know What does rooting mean? Rooting is nothing but gaining the access to root of the operating software which lets you install custom ROM’s, custom themes and modify the phone’s OS in any possible way.

Initially the manufacturer of the phone will not give permissions to access root. You cannot install all these custom ROM’s or any other custom firmware. So, if you desire to use your phone to its full capacity, you should root it i.e., you should gain the access to root. Rooting has many pros, have many cons though. Rooting voids the manufacturers warranty for the device. Further, it may possibly brick the operating system which makes the device function improperly and in some case it may become useless. So, if it is your own decision to root Samsung Galaxy S2, go through the prerequisites listed below to safeguard your personal data and operating software.

Prerequisites

Samsung USB Drivers

To root Samsung Galaxy S2, it is to be connected to a PC. For the PC to detect your phone, you should install Samsung USB drivers. If you have already installed them, ignore this message. Else, go through the below link to download Samsung USB Drivers.

Get Samsung USB Drivers

Backup Important Data

Good to see you that you are done with installation of USB drivers. We know, it is mandatory to backup important data on phone before we root/install ROMs. If anything goes wrong while rooting, it wipes the entire data. So, backup is recommended while updating an Android phone. If you are not sure about what to backup and how to backup? take a look below:

  • Backup Apps, Wanna know how? Check this >> How To Backup Android Apps ?
  • Backup SMS Messages, Wanna know how? Make use of SMS Backup & Restore App
  • Backup Contacts, Mail data, Google Data, Wanna know how?, Just sync them with Google Sync.
  • Backup Call Logs, Wanna know how? Make use of Call Logs Backup & Restore Android App   
  • Backup phone settings like Access Points, GPRS Settings, Connectivity Settings. Wanna know how? Note them on a paper or something.

Few More Prerequisites

  • You have already installed USB drivers on your computer. Even though if your phone fails to detect the PC, make sure that whether you have enabled USB debugging on your Android phone. The path to enable it varies for different versions of Android operating systems like Jelly Bean, Ice Cream Sandwich, Gingerbread.
  • Double check your device model before you get started with the installation. If you install non compatible ROM on your phone, it may brick the operating system. So, make sure that your phone model matches with the model we mention in the article. If your device is restricted to a network, make sure that your phone’s bootloader is unlocked. If bootloader is locked you cannot root or install custom firmware on Galaxy S2.
  • Make sure the phone’s battery is at least 75% full to ensure that it should not run out of battery while installing the ROM.
  • Download all the required files listed in the downloads section and keep them in a folder to be handy for you.

If you have completed all the above steps, you can now continue with installation process which is a bit typical. Make sure that complete every step in an orderly manner.

Downloads Required

Download Jeboo Kernel For Galaxy S2

ODIN v3.09

Superuser Zip File

How To Root Samsung Galaxy S2 GT-I9100 On Android JellyBean ?

Things To Remember:

Disclaimer: The Custom ROM’s, Firmware, Software, Applications, Mods and any other tools shared/mentioned in this article belongs to their respective developers. Neither our team nor the developers are responsible to any losses that occur to your device while installation. So, you are suggested to continue with the tutorial at your own risk. Think before you act. 

Warning: Make sure that you double check the model name/number we mention in the article. Attempting to install the firmware on any other model may brick the OS.

Rooting Warning: Rooting voids the manufacturer’s warranty for the device. It may possibly brick the operating software of the device. So, make sure that you continue to the tutorial with your own decision. 

how to root samsung galaxy s2

Step-By-Step Tutorial

Step 1: Turn off the device and hold Volume Down+Home+Power buttons together for more than 3 seconds and wait until the warning screen appears.

Step 2: Read the warning, press Volume up button to continue and Volume Down button to cancel the process.

Step 3: Once you press the Volume Up button the phone enters the OS download mode. Now run the ODIN v3.07 or v3.09 on your PC and connect the Galaxy S2 to the same PC in the OS download mode.

Step 4: If the connection is successful, you can see a yellow color highlighted box with ID and a number in the ODIN user interface. Click PDA button in the ODIN application and choose the Jeboo Kernel For Galaxy S2 which you downloaded previously.

Step 5: Now hit Start button in the ODIN which starts flashing the Kernel on your device.

Step 6: If the installation is successful, the yellow highlighted box turns green with a PASS message in it. Once the pass message appears, the phone reboots automatically. Now transfer the previously downloaded Superuser Zip File into your phone’s memory card. Make sure that you copy it to the root folder.

Step 7: Turn off the device and hold Volume up+Home+Power buttons together until the phone enters CWM recovery mode. As we installed a custom Kernel which comes with custom recovery, you need not install CWM recovery separately.

Step 8: Once the phone enters CWM recovery, choose Install zip.

 Step 9: Now select Choose zip from Internal SD card.

Step 10: Choose the CWM-SuperSu-v0.99.zip file from the SD card.

Step 11: In the next screen confirm the installation. Once you confirm, the Su binary and Superuser apps gets installed on your device providing complete root access.

Once the installation completes, you can find Superuser app in the list of  apps installed on your phone. Grant the permission for the Superuser app when you open it for the first time.

That’s all. You’ve gained complete access to the root of your device. Now you can run and install custom ROM’s, themes and other firmware on your phone without any restriction.

If you face any issues during the tutorial, feel free to mention your words in the comments section. We will be glad to help you.