`` Tutorial to Root Galaxy S2 on Official ICS XXLPQ 4.0.3 Firmware

How to Root Galaxy S2 on Official ICS XXLPQ 4.0.3 Firmware

Galaxy S2 LogoAs we said in the last article, we are here to help you for rooting your Samsung Galaxy S2 GT I9100 on XXLPQ ICS Android 4.0.3 Firmware. Over a period of this article, we will see on what are the pre requisites you need to follow along with the detailed tutorial on how to root your device with the simplest ever procedure. Please be informed that, once you root the device, the warranty gets void and the only way with which you can revoke the root access is by applying the official firmware of XXLPQ and also you need to clear the firmware update counter by following the corresponding instructions.

Disclaimer: Neither we, nor developer should be held responsible for any damage happened to your device in the process of following the instructions mentioned in this article. It’s very unlikely that there will be any issues but just in case if at all there are any issues then we are committed to help you in solving the same.

Pre Requisites:

Data like SMS, Contacts, APN Settings and Call Log is very important and in the process of firmware update, the data may get corrupted or may even et erased. So it’s highly important that you backup all the data using the below mentioned data

SMS – Use “SMS Backup & Restore app”,
ContactsSync with the Gmail application,
Call Log - Call Log and Restore
Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

  • To facilitate smoother and uninterrupted rooting process, ensure that your phone is left with the minimum of 60% battery charge which you can find from the path “Settings > About Phone > Status” where Battery Level will be mentioned.
  • Rooting will need your device to be connected with the PC, so ensure USB Debugging option is enabled in your phone from the path path “Settings > Applications > Development > USB debugging”. The USB Debugging option should be ticked as shown in the below screen capture. (Phone should be disconnected from computer while enabling the USB Debugging Mode).

USB Debugging

  • All antivirus in your computer should be disabled along with the Firewall tools. Uninstall all the security suites if installed in your Galaxy S2 as these tools generally interrupt the process of firmware update.

So assuming that you have gone through all the above mentioned things, you can now proceed to the next step where we have summed up a detailed tutorial on how to root your Samsung Galaxy S2 GT I9100.


  1. Everything was fine until the last step. Phone didn’t reboot after the PASS notification in odin. It just show samsung Galaxy s II main screen but not able to boot to home screen. I can go to download mode but not to recovery mode. Please help.

  2. Easy to use, and works perfectly, Thank you

  3. Raynold Vindas V

    * Necesario ser root
    1. Descargar la aplicacion TriangleAway v1.51 o la ultima.
    2. Instalar la aplicacion en el terminal
    3. Iniciar la aplicacion y tocar en “Reset flash counter”
    4. El terminal se reiniciara solo, si no lo hace lo hacemos nosotros
    5. Listo!
    esto evita comprar o tratar de hacer gig, a un precio bastante bueno
    last step ELIMINATE YELLOW TRIANGLE * ONLY * ICS ————————————————– – * Required to be root
    1. Download the application or the last TriangleAway v1.51.
    2. Install the application on the terminal
    3. Start the application and tap “Reset flash counter”
    4. The terminal will reboot itself if it does we do
    5. Ready!
    This avoids buying or trying to gig at a pretty good price

  4. i have Bell Canada Mobile i want to update ICS 4.3 my Mobile is rooted. so can any one Help to update my Mobile…

  5. hi

  6. new CF root 5.5 is available for Galaxy S2

  7. Do I lost all my apps that was installed

  8. I have good new for you guys.
    First I Have Successfully Install the ICS 4.0.3.
    After that I Rooted My Phone with The Latest Kernel


    And then I got the YELLOW TRiANGLE.
    But Then I Just Sitch Off My Phone,
    Remove Battery for 15 Seconds And Then Insert the Battery Again,
    Then I Use USB JiG And It Erases The Binary Count And Remove YELLOW TRiANGLE.

    I Hope its Help.

  9. can’t seem to get the phone to go past the home screen??

  10. Hi I downloaded your CF-ROOT package and it has a zImage file in it. However when I try finding the file via ODIN it doesn show the file and there is no option for me to search via alltypes file. PC onli shows FILES OF TYPE – PDA FILE(.tar, .md5, .smd)

  11. i just tried it now. It passed in the Odin. after that my phone doesn’t boot. It just shows the samsung logo screen with the warning sign for 2 seconds and than goes blank. I managed to go into the recovery mode and made a backup on my external sd card. Now could anyone please tell me what to do to get my phone working. Be it adding any extra files or factory restoring. I tried the Wipe data/ factory restore, but its still not working.
    Kindly help me out!

  12. i have rooted the xxlpq with the above file, everything was fine until i tried to install applications. For some applications it started showing “can’t install on usb storage or sd card”.
    Luckily, xda developers pointed to a fix
    just download the latest cf root file which is 5.4 ( the one in this post is 5.3) and flash it again with odin. i did not do any reset after that. The problem was gone

  13. Hi, I just rooted the phone, thank you very much, but now I don’t seem to be able to install my previously downloaded apps. The market just seems to hang? And why is Play now back to’android Market’?

  14. after rooting, while updating the phone, getting an error – cant mount sd card.. help please!!

  15. from where do i install that software???

  16. help plz. rooting process always stops at zimage. what should i do?

    • Can you elaborate?
      Did you extract the tar file and end up with zImage? If so you are not supposed to extract that file, and select what appears to be a zip file from the folder as PDA in odin

  17. my sgs2 always stuck during rooting on zimage
    what should i do? help plz

  18. Also are the other ICS frimwares on this site better than LPQ? Should I switch?

  19. Can we unroot anytime, If yes then how? I just upgraded to 4.0.3 (LPQ) using ur tutorial.

  20. Greetings fellow Galaxians :p

    My phone is the GT i9100 running Android 4.0.3 Baseband i9100XXLPQ

    Kernel version 3.0.15- i9100XXLPQ-CL223505

    Oh yeah – and it’s white! lol

    My desire is to:

    1/ Root the device and not get that yellow triangle back by doing so

    2/ Obtain opinions to choose a voice app that is the best case / closest to SIRI as I find IRIS to be almost useless

    3/ Thank the people who put in their UNPAID time to assist us! I do not see enough “thank you’s” in this forum so let’s all deliver a clap and thank you to the “helpers” whom without one could totally mess this device up so bad that your very life is on the line!

    (OK – maybe a day – or if RIM 3 days)

    Thank you in advance,

    The Doctor

    May I also request that if any instructions or advice could be rendered as clearly andincludes URLs and other point by point instructions?

  21. same problem with this one. my phone has a black screen.
    please help i reapplied everything and still black screen.

    how to fix it.
    another link or something.

  22. hi frnds i m also useing samsung s2 and i also want update in ice4.o

  23. So the only way to rom back up the device is to destroy all the setup i want to back up resetting to factory default, can google BE any more stuid or is it samsung or both any way … guess i will stick with official version of 4.0.3 on my sgs2 until i have the hoursspare to do the backup which i wanted to do to save me having to do jusdt that oi vey i’m gonna go play with my spectrum 48k…

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About Pradeep Neela

Friends call him Droid Geek because he tries out different ROM’s everyday and helps droid users experience better features on their devices. Add +Neal Pradeep on Google Plus for more Updates.
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