[Galaxy S II Q&A, Help & Troubleshooting] yuyamasan:
i find this page for you.i rooted my phone before the update but my phone steal rooted. maybe this page can help you. sory my eng. If I knew English better i would like to help you more. good luck:)

and i cant put the outside link before the 10 message just i can say i find in the ::teamandroid datcom::

Root XXLQB Android 4.0.4 on Galaxy S2 I9100 with ODIN

Posted on August 7, 2012

in Android Tips

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Android 4.0.4 XXLQB was released a few days ago for the Galaxy S2 I9100 and at that moment, it was not possible to root. But XXLQB root is now available with full instructions, thanks to a custom kernel. You can easily root XXLQB Android 4.0.4 ICS on Galaxy S2 I9100 using the tutorial given below. We will use SiyahKernel v4.0.

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

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) 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:

Backup your SMS messages. How? –> How to Backup/Restore SMS Messages.

Backup Contacts, Gmail and Google Data. How? –> Sync with Google Sync.

Backup Call History. How? –> How to Backup Call History.

Backup WhatsApp Messages. How? –> How to Backup/Restore WhatsApp Messages.

Backup APN Settings: GPRS, 3G, MMS Settings.

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 Android 4.0.4 XXLQB ICS official stock firmware.

How to Root Android 4.0.4 XXLQB ICS on Galaxy S2 I9100

We have put together a detailed step-by-step instructions guide on how to update Samsung Galaxy S II on Android 4.0.4 XXLQB ICS with full root access. If you are used to installing official updates through ODIN on Samsung Galaxy devices, then this should not be any different for you.

Please read every line carefully and make sure you read the entire tutorial once before actually performing it on your phone.

To Remember:

This Android 4.0.4 XXLQB root tutorial is only for Samsung Galaxy S2 I9100. Please don’t try this on any other variants of the phone.

This tutorial will wipe out all your data.

Make sure you backup all your data in your phone before proceeding.

Complete Step-By-Step Instructions:

Step 1 - Download SiyahKernel Root I9100XXLQB for Galaxy S2 to your computer and extract the zip file.

Step 2 - Download ODIN v1.85 which will help you to root Android 4.0.4 on Samsung Galaxy S2 I9100.

Step 3 - Switch off your phone. Now go to Download Mode. How? Press and hold the Volume Down + Home buttons together, and then press the Power button till you see the construction Android robot and a triangle. Press Power again to confirm to enter into Download Mode.

Step 4 - Make sure you have your Galaxy S2 USB drivers installed on your computer.

Step 5 - Open ODIN on your computer. Connect your phone to your computer while your phone is in the Download Mode.

Step 6 - If your phone is connected successfully, one of the ID:COM boxes will turn yellow with the COM port number. This step might take some time.

Step 7 - Now select the files that you have to flash/install on your phone. These files are to be found from the extracted files in Step 1.

Click on ‘PDA’ and select the file ‘Siyah-s2-v4.0.1.tar‘.

Step 8 - In ODIN, check the Auto Reboot and F. Reset Time options.

Step 9 - Now click on the Start button in ODIN. Installation process will start and would take a few minutes to complete.

Step 10 - After the installation is completed, your phone will restart. After you see the home screen, unplug your phone from the computer.

That’s it. Your Samsung Galaxy S II has now been rooted on Android 4.0.4 build XXLQB software update. Check for the Superuser app in your apps list to verify.

To make sure you have correctly installed the above root method and it’s working, verify with Root Checker as given in the link.

If you run into any problems, feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.