Rooting voids limitations of manufacturer on your Android devices and generate super user rights for you that you can use to customize almost every aspect of phone, in other words it makes you able to apply hacks over phone and here you can gain root access for the improved Samsung Galaxy S2 Plus, thanks to senior XDA developer chotu222.
Here’s guide to learn how to root Galaxy S2 Plus GT-I9105. Make sure the ClockworkMod recovery is installed on your phone, you can check this guide to install the recovery. Do keep in mind that rooting will also void the warranty of your phone, however you may get it back by unrooting the phone.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or gets damaged following this guide.
Instructions
Step #1: Download Superuser for Galaxy S2 Plus I9105 from here.
Step #2: Transfer the downloaded zip file to SD card of device.
Step #3: Turn the device off.
Step #4: Reboot the device into recovery mode by holding down volume up, home and power buttons.
Step #5: In recovery mode, create a nandroid backup of your current ROM, it’s important because if anything goes wrong, you’ll be able to easily revert back to your current state. To create backup select “Backup and Restore”, and then select “Backup” again.
Step #6: Return to main menu by selecting “Go Back”.
Step #7: Select “Install Zip from SD Card” then “Choose Zip from SD Card” and locate the downloaded file that you’ve transferred in above step and confirm installation.
Step #8: Once the installation is completed, select “Go Back” after that select “Reboot System Now” to reboot phone.
That’s it, the SuperUser app is now installed on your Galaxy S2 Plus and it’s rooted now. Be sure to install root checker app from the Google Play Store to confirm the root access. If you experience any error, leave a comment below.
Via: XDA