It has been quite a while since the Samsung Galaxy S2 received the Android 4.1.2 Jelly Bean update. The users of this phone must be feeling a little better to get the long-awaited update. We had come up with a rooting Guide for the Galaxy S2 on Android 4.1.2 XWLS8 firmware but that was specific only to a bunch of builds. Here is another rooting tutorial that is applicable to all 4.1.2 firmwares. Today’s tutorial will describe the method to root Galaxy S2 GT-I9100 on the Android 4.12 Jelly Bean firmware from Samsung.
If you have already updated your Galaxy S2 to the latest Android 4.1.2 Jelly Bean ROM and wish to root your phone and install the ClockworkMod recovery on it, follow the easy tutorial given below. Having rooted your phone, you will be able to install apps that require root permission. On the other hand, if you install the CWM Recovery too, you can install custom ROMs and mods to enjoy variety and get the most out of your Galaxy S2.
Though the method described below has been tested successfully and found working fine, it’s our duty to warn you that the rooting procedure is considered risky and will void your phone’s warranty too. Therefore, think twice before you decide to proceed with it. We shall not be responsible for any mishap. You can regain the warranty later by unrooting or flashing the official firmware.
The rooting procedure described here also works with Galaxy S2 GT-I9100T variant.
Installing CWM Recovery on Galaxy S2
Before you can root Galaxy S2 GT-I9100, you will have flash a custom recovery on it, Let’s see how to do that.
- Download Jeboo Kernel (do not extract): jeboo_kernel_i9100_v1-2a.tar
- Download Odin flasher and extract the zip on your desktop: Odin3_v1.85.zip
- Download the rooting package for Galaxy S2 and copy it to the internal or external SD card of your phone: UPDATE-SuperSU-v1.30.zip
- Make sure that either Kies or Samsung USB Driver is installed on your computer. Remember that during the whole procedure Kies should no be running.
- Make sure you Galaxy S2 has more than 50% battery left.
- Using these backup apps, you can back up your contacts, messages, APNs, bookmarks, calendar, apps & games.
- Enable the USB Debugging mode on your phone: Settings> Developer Options> USB Debugging.
- Boot your phone into Download Mode: turn off the phone, press and hold the Volume Down+Home (center) buttons together and then press and hold the Power key for a few seconds. Press the Volume Up key when the phone prompts you to do so to enter the download mode.
- Now go to the Odin folder and run the Odin program by double-clicking the Odin3_v1.85.exe file.
- Connect your Galaxy S2 to the computer using a compatible USB cable. When Odin detects your device, you will see the ID:COM port turning yellow.
- Check that the Auto Reboot and F. Reset Time options are ticked on Odin
- Now click the PDA button and select the “jeboo_kernel_i9100_v1-2a.tar” file.
- Make sure that everything looks like shown in the image above, and then hit the Start.
- When the installation is complete, your phone will reboot automatically.
When the phone boots up, it should have ClockworkMod Recovery installed on it but your phone is still unrooted.
Root Galaxy S2 GT-I9100 on Android 4.1.2
- Download the SuperSU file (do not extract) from above and copy the file to your phone’s SD card.
- Boot your phone into CWM Recovery mode: turn off the phone, press and hold the Volume Up+Home (center) buttons together and then press and hold the Power key for a few seconds. Release the Power key when you see the Samsung logo blink for 2 times but keep other keys pressed until you see the black screen with blue text. In recovery, use the volume keys to highlight/scroll options and the Power key to select them.
- Go to “install zip from sd card> choose zip from sd card”, navigate to UPDATE-SuperSU-v1.30.zip file and select it.
- Confirm the selection by choosing “yes” on the next screen.
- When the installation is finished, go back and select “reboot system now” option.
On booting up, your phone should be rooted. Go to the app drawer on your phone, open the SuperSU app and update the binary if prompted. Download and install Root Checker app and run it to verify the root. Later, whenever you need to boot your Galaxy S2 into CWM Recovery mode, turn off the phone, and follow Step 2.
If you find this tutorial helpful, why not share it with your friends. Do not forget to drop your feedback and experiences via comments. Cheers!
Rooted Your Galaxy S2? Now What?
Having rooted your Android device, you have now opened the door of possibilities. You can now install any apps that require root access, a mod made for your device, and choose from lots of custom ROMs available for your Galaxy S2.