Tips & Tutorials

How to Root BOLPM Android 4.0.4 ICS on Galaxy S2 I9100

We are sure many of you would have already updated to the latest ICS firmware BOLPM Android 4.0.4 as it got rolled out in your region for you. Along with that, you can now also root Android 4.0.4 BOLPM on Galaxy S2. You can now easily root Galaxy S2 I9100 with BOLPM Android 4.0.4 ICS using the tutorial given below. We will use SiyahKernel v4.0 custom kernel to root.

As you continue reading below, we will guide you through the entire process of how to root the official software update BOLPM Android 4.0.4 ICS on Galaxy S2 I9100 using ODIN. Go to Settings > About phone to verify what build you have. Please make sure you backup all your apps and personal data as a precaution before proceeding. Let’s continue with the tutorial below.

Galaxy S2

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We ( or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

This root method tutorial is only for the official stock firmware. Custom firmwares are usually pre-rooted but even if you need to root any, flash SiyahKernel using ClockworkMod recovery.

Make sure you have installed all your USB drivers for the Samsung Galaxy S II to connect it with the computer. Download Samsung Galaxy S2 USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and root Galaxy S2 I9100 on BOLPM Android 4.0.4 ICS official stock firmware.

About the author

Haris Nadeem

He lives on everything Android; has countless devices, apps and games to play with everyday. Currently serving as the Chief Editor at Team Android.


  • Hello,i have a German Tmobile GS2I 9100 which i bought in GREECE and its unlocked even though its branded full of Tmobile bloatware.I use it with a sim cards from different providers since its unlocked.I received the 4.0.4 POLPM update yesterday through KIES and the phone works fine.If i want to root can i use ur method above?Thanks in advance!

  • From where can I download the stock kernel for SG2 I9100 BOLPM (Andriod 4.0.4). I have untrooted my phone again and want the original stock kernel back.

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