Update Galaxy S2 to Android 2.3.6 XXKL1 Firmware

XXKL1 Android 2.3.6 Installation

Page content:

  • 1.Pre-Installation tips:
  • 2.Installation video
  • 3.Video:
  • 4.Step by Step Instructions:

Firmware leaks keep on coming in the world Samsung Galaxy devices, and the latest of them is Android 2.3.6 based firmware for Samsung Galaxy S2 ─ XXKL1.

It’s the fourth leak of Android 2.3.6 based firmware, and as always I’ve no idea what’s changed (guess nobody has). Anyway we’re going to update 😉

This guide is applicable only for Samsung’s Galaxy S2 (S II) international version (i9100). Check your phone’s version in Settings – About Phone. It has to be “GT-i9100” for the XXKL1 firmware to be compatible with your device. If it’s not GT-i9100, simply don’t try this ROM on your android handset, don’t even think about it if you care not to brick your device.[/info]

The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know completely what it is. If any damage occurs to you or your device, we won’t be held liable. You only will be responsible — you’ve been warned. Okay!

Pre-Installation tips:

  1. Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc. This Android backup guide would help you.
  2. If you have Samsung’s PC software Kies installed, un-install it first because it may interrupt the flashing process.
  3. Drivers! — it’s important you’ve the proper drivers installed. Download links below:

Installation video

The video given below shows the installation of an earlier firmware (XXKG1), but the steps to update to XXKL1 are all similar, so you can easily follow the video to get some visual guidance.


Step by Step Instructions:

  1. Download the Android 2.3.6 Firmware – XXKL1. Filename: I9100XXKL1_I9100OXAKL1.rar. Size: 299.5 MB → Download Link. (password: sampro.pl)
  2. Extract the downloaded file ‘I9100XXKL1_I9100OXAKL1.rar’ to get these 4 files:
    1. CODE_I9100XXKL1_CL783870_REV02_eng_mid_ship.tar.md5
    2. GT-I9100-CSC-MULTI-OXAKL1.tar.md5
    3. MODEM_I9100XXKL1_REV_02_CL1085162.tar.md5
    4. u1_02_20110310_emmc_EXT4.pit (we won’t be using it since it’s not essential for flashing the firmware. Read Step 13 below this to know more)
  3. Download Odin software. Filename: Odin3-v1.85.zip. Size: 198 KB → Download Link. Extract the zip file to folder to get 2 files – Odin3 v1.85.exe and Odin3.ini. Do not delete the .ini file (the second one) since it’s very much required, too. when asked in step 6 below, open Odin by double clicking on the Odin3 v1.85.exe file.
  4. Disconnect your phone if it’s connected to PC.  Switch Off your phone. Wait for vibration to confirm complete switch off.
  5. Now, put the Galaxy S2 in Download Mode — press and hold these keys together: Volume_DOWN+Home+Power. this is required to install the XXKG1 using Odin PC Software.
  6. Open Odin (from step 3) — Odin3 v1.85.exe.
  7. Connect your phone to PC now. You should get the message “Added! !” under the Odin’s message box in the bottom left. If you don’t get this message, than probably there is a problem with drivers. Make sure you’ve drivers installed.
  8. Important! On Odin, Do NOT tick the ‘Re-Partition’ checkbox, but keep the ‘Auto Reboot’ & ‘F. Reset Time’ checkboxes ticked. Do not touch any other checkbox or tab or anything, except as required in step 9 below.
  9. Select these files in Odin at respective tabs (check out the screenshot given at the top for help):
    1. Click the PDA Tab, and select CODE_I9100XXKL1_CL783870_REV02_eng_mid_ship.tar.md5 (from step 2.1)
    2. Click the Phone Tab, and select MODEM_I9100XXKL1_REV_02_CL1085162.tar.md5 (from step 2.3)
    3. Click the CSC Tab, and select GT-I9100-CSC-MULTI-OXAKL1.tar.md5 (from step 2.2)
  10. Double check everything said in step 8 and 9 above. [And, do not use the file in step 2.4 anywhere in Odin]. Your Odin’s window should look real similar to the image at the very top — which is my Odin’s screen while I flashed the XXKL1 on my Galaxy S.
  11. Now, hit the START button to let the process begin. When process at Odin finishes your phone will automatically reboot — and you can unplug the cable then. Plus, you’ll get a PASS (with green background) message in the left-most box at the very top of the Odin. If it’s red and with FAIL written over it, the process flashing process wasn’t successful.
  12. When it restarts, your Galaxy S2 will be running on Android 2.3.6 with Samsung’s custom UI TouchWiz 4 atop it. Check out your S2’s android version here – Settings → About Phone.
  13. About the .pit file (one you found in step 2.4). The .pit file re-partitions the phone’s internal memory space. You don’t need it often, that’s why we don’t use it generally. But if you are unable to flash the XXKL1 ROM successfully, you can try the whole process again but using the .pit file too this time.
    Important: When you use .pit file (ever!) you need to tick the Re-Partition checkbox too (which wasn’t the case earlier – check step 8 when we kept it un-ticked). So, if you are flashing the XXKL1 again, select the .pit file too (from step 2.4 ) in the PIT Tab together with all other files as said in step 9. Then, make sure the Re-Partition button is ticked too along with the Auto Reboot and F. Reset Time checkboxes — that is, all three checkboxes will be ticked if you use the .pit file.
  14. (Optional, of course) If you found this guide useful, share it with others too on webpages, forums, your Facebook/twitter/Google+ pages, etc. That would be helping us grow too!

If before flashing this, you had your phone rooted you would want the root back, right? Well, that’s very obvious. But chainfire hasn’t released a working root for XXKL1 yet. So I’d suggest you to root using SuperOneClick, it may work.

Do let us know about your experience of the XXKL1 ROM in the comments below.

72 Comment

  1. Vyacheslav Gubin says: Reply

    What is the password to I9100XXKL1_I9100OXAKL1.rar?

    1. Shivam says: Reply

      PASS: sampro.pl

      1. Vyacheslav Gubin says: Reply

        Thanks mate :-).
        Very informative blog!

        1. Munna says: Reply

           plz give me root file

  2. Anonymous says: Reply

    Are there any ways to get the customization back after upgrade, like all the personalization, shortcuts added etc?

    1. Shivam says: Reply

      No, but if you’re rooted you can take a complete backup with “*Titanium backup*” (search for it in the Market) before upgrading to the new firmware. And restore the backup after you upgrade.

      1. Anonymous says: Reply

        Thanks a lot Shivam

  3. Anonymous says: Reply

    Another question, is there any support for unicode languages like Hindi/Malayalam/Tamil etc with the latest firmware update? If not any idea when android would start supporting unicode?


  4. Dverwoert says: Reply

    Update Galaxy S2 to Android 2.3.6 XXKL1 Firmware
    Rooted with 
    SuperOneClick v2.3.1
    takes 5 to 10 minutes and gave a message that the phone was already rooted which I ignored and the program said it was not responding several times but just waited and waited until it finally finished installation and shut off. When I restarted my phone was rooted. Installed Titanium Backup and recovered all programs and data. 

    Great operation by following directions and being patient. 

  5. Stefan says: Reply

    Rooted with SuperOneClick v2.3.1 successfully !!

    You must wait 5/10  minutes till the end :p

    Restart ,enjoy 🙂

  6. Patelchirag_2008 says: Reply

    bro 2 yellow light comes in odin…in video i show only 1…it is right…..?

    which one is best stable stock firmware for galaxy s2?

  7. Aqkhana2002 says: Reply

    ok i got this problem , once my galaxy s2 color fainted , i rest and its ok now. still testing will let you know..

  8. Nilabh Singh says: Reply

    The bar is not progressing. It’s stuck just before the finishing point in thew bar and the message in the box reads data.img

    what to do?
    need help as son as possible.

    1. Kapil says: Reply

      Try again. Happens!

  9. bharat kotwani says: Reply

    thanks a lot, i did it in the second round after adding the .pit file. thakyou

  10. sameer says: Reply

    kindly let me know that is it an official rom, and also that wouldnit void my warranty or not? plz

  11. sameer says: Reply

    wrong password message displys after 65% of extraction?????

    1. Kapil says: Reply

      I think yoir download is corrupted. Try downloading again.

  12. hristo says: Reply

    is this android for daily use ?

    1. Saduna says: Reply

      u00a0yes its good for daily use, it works charm on SGS 2 try it. Sure you will like it.

      1. hristo says: Reply

        ok thanks

  13. Garf says: Reply

    Well, didn’t work for me on my main PC (W7 64bit), but then Keis had just managed to wipe the firmware and refuse to perform an emergency recovery on the same computer…just deep joy! Odin could see the S2, but just threw back a red FAIL box when I pressed ‘Start’.nnTried to use Keis and the operations above on my netbook (W7 32bit) and that failed too; I couldn’t get the USB drivers to work…nnThird time lucky on my works laptop (W7 64bit). u00a0Keis refused to see the S2, but Odin picked it up and after 3 mins or so my S2 was flashed and working…nnty for the guide, very, very useful…roll on Android 4.0 for S2

    1. Garf says: Reply

      2 week sin and I’m finding this version of firmware heavy on the battery (even with JD paid for) and the phone not as ‘snappy’ at responding to finger presses, etc.

      Also, first time I’ve seen a kernel panic on my phone with this build.  

      1. Garf says: Reply

        Well I’ve just flashed my G2 to 4.0.3 XXLPQ and it is so much better.  My phone is significantly faster, uses less battery juice.  I am very impressed with 4.0.3.

  14. Khanzoy says: Reply

    i love u mannnnn mmwaaaaah

  15. razor says: Reply

    thanx dude.love u

  16. Peter Godzina says: Reply

    I upgraded to this from 2.3.3 but now the phone says that I’m on roaming, when I’m not.


  17. Chickoo says: Reply

    it worked !! but now phone does not ring. the only 2 options are silent mode and vibrate.. help!!

    1. Chickoo says: Reply

      hey it started working no issues.. thanks..

      1. Thanushka_rc says: Reply

         hey man can you tell me whether it works for Galaxy sii Baseband version I9100XXKI1

  18. Hi i would like your help, a few weeks ago i flashed my phone through odin with the 4.0.3 firmware off androidadvices.com tried going onto Radio and it locked my phone up so i had to reflash odin again and since i have NO SIGNAL when i used to have 3 bars, i’ve set up APN no problem my phone only works if i put a safety pin in the back of it, i have tried different roms since same problem, could anyone help me please it would be great !!!! 

    1. Kapil says: Reply

      Hey, is your phone working now or it’s still stuck? Your comment skipped my attn earlier, I just read it.

  19. worked great thnx alot adn anyone planning on going onto ics dnt bother way too buggy yet

    1. Thanushka_rc says: Reply

       hey man can you tell me whether it works for Galaxy sii Baseband version I9100XXKI1 

      1. Kapil says: Reply

        If you are looking to install ice Cream Sandwich on your Galaxy S2 with baseband XXKL1, you can do so without any worries. We would recommend you to install the latest Samsung leaked firmware — XXLPH ( http://www.theandroidsoul.com/xxlph/). It’s the best!

        1. Thanushka_rc says: Reply

           no man I’m not going to install ice cream sandwich. I just want to upgrade it ti 2.3.6 version(Gingerbread). My Baseband version is I9100XXKI1 not I9100XXKL1 is it ok to do this installation  

          1. Kapil says:

            Oh ok… ya no probs whatsoever with you upgrading to XXKL1 using the guide above. Go ahead. Take care to take backups as said in pre-installation tips above, of SMS, calls, and most important of them all, APN settings which you’ll need for internet.

  20. Daniel Mayo says: Reply

    the password doesn’t work

  21. Daniel Mayo says: Reply

    and the odin3 wont open it shows some msg in another language then closes

  22. jake says: Reply

    Man I love you.. Thanks work great

  23. Vince_ywy says: Reply

    how if is hang at “setup connection” for so long  ??

  24. I’m having problems connecting to my mobile network with this firmware, please help.

  25. Siddhurock21 says: Reply

    mine is dxkl1 can i still run it??

    1. Kapil says: Reply


  26. androidmad says: Reply

    i updated to XXKL1 (2.3.6) test above but i need baseband XXKL1 2.3.4 or Original software back on my galaxy s 2 it needs to  be XXKL1 original factory rom (not test)
    so i can update to XXKL1 ics (android 4.0) as every phone has different ver of ics eg XXKLP XXKGP ETC don’t work properly 

    any chance the is a factory rom for model (XXKL1) 2.3.3 , 2.3.4  or 2.3.5  roms as XXKL1 2.3.6 here is beta test

    1. androidmad says: Reply


      1 turn phone off 

      2 press power on hold up vol key +power and middle home screen key same time (recovery mode)

      3 flash factory data reset 

      4. clear cache 

      5. with phone on (same menu)pull out battery don’t turn off using power button or reboot !!

      6. turn on phone with vol down key + power + home screen same time (press up key on menu ( “down load mode “)

      7. use Odin and flash ics sim free uk 4.03 ffI9100XWLP7_I9100XXLPS_I9100XEULP5_HOME.tar in pda

      This worked for me on a generic uk sim free uk phone i am not responsible for any damaged phones or software please read more info if unsure 

      Stated with base band sim free XXKI4 UK to XXKL1 which was a beta  now on (ICS 4.03 sim free) 

  27. Cmiui Ct says: Reply

    Is this rom working on the korean version,the m250s?

    plaease answer

  28. Cybernickjm says: Reply

    after upgrading to this firmware my signal took forever to come up….why?how do i downgrade?

    1. Kapil says: Reply

      Install XXKH3 to downgrade to Android 2.3 Gingerbread – http://www.theandroidsoul.com/how-to-install-xxkh3-on-samsung-galaxy-s-2-ii-i9100/

      1. androidmad says: Reply

        where can i find modem xxki1 for odin file ? to down grade?

  29. it works thanks bro

  30. working smoothly 😀

  31. this is the easiest way ever, and i really thank you from the bottom of my heart.

    1. Kapil says: Reply

      Thanks 😀

  32. Mucsie says: Reply

    I thank you from the bottom of my heart for this excellent post: IN Canada I got a “Polish” brand-new unit which I mistakenly upgraded to ICS… In the process of reverting I loaded an “Orange” firmware, but this post has brought me to a “GOOD” state!
    My 25 year-old first-born is yours for the asking!!!

    Ajax, Ontario, Canada 

  33. SAS says: Reply

    the FirmWare Version is 2.3.4 after the Update not 2.3.6 !!!!!

    1. Kapil says: Reply

      Android 2.3.4 and 2.3.6 is okay, try the Android 4.0 firmware by Samsung, XXLPQ — http://www.theandroidsoul.com/xxlpq/

  34. Ed says: Reply

    Hi there.. After installing I have two problems. One, the battery drain really fast. Two and the most important one, when I off my phone(after waiting for the last vibration) the phone turns off well but suddenly the battery symbol came up and starts to blink with a yellow triangle and a thermometer sign with it. How do I solve these problems?

    1. Kapil says: Reply

      Here are some fixes for you.

      To install an Android 2.3 Gingerbread firmware, use this guide and flash the XXKH3 firmware: http://www.theandroidsoul.com/how-to-install-xxkh3-on-samsung-galaxy-s-2-ii-i9100/
      To install an Android 4.0 Ice Cream Sandwich firmware, use this guide and flash the XXLPQ firmware: http://www.theandroidsoul.com/xxlpq/

      Flashing a new firmware should solve these things. Let me know.

  35. praveen says: Reply

    i need ur help man..i updated thru this odin…but it was failed everytime..old os also deleted..i dont know wat to do..but it goes to download mode..it comes added..but the operation failes at the end

    1. Kapil says: Reply

      Here are some fixes for you.

      To install an Android 2.3 Gingerbread firmware, use this guide and flash the XXKH3 firmware: http://www.theandroidsoul.com/how-to-install-xxkh3-on-samsung-galaxy-s-2-ii-i9100/
      To install an Android 4.0 Ice Cream Sandwich firmware, use this guide and flash the XXLPQ firmware: http://www.theandroidsoul.com/xxlpq/

      You cna use a new ODin to flash the above firmwares if your current Odin fails to update even after you get “Added” message in Odin.
      Link to new Odin 3.04 – http://www.mediafire.com/?189h7dqldccnrq8

  36. Shamlan Al-Ayoub says: Reply

    I installed it but it doesnt not display any arabic!!
    What to do i tried to reflash it always fail and if i reflash it with the same files it goes fine, Any other ROM it fails.

    1. this is Europe version

  37. Karla says: Reply

    I get this version but I hate it, the wallpaper can’t be scrolled and things like that, it makes this phone boring, is there a way to got the older version back?…thank you

  38. chatstar says: Reply

    i have tried this but after pass appeares on odin and my samsung galaxy s2 restarts its asking for password. plz plz anyone help why after installing this firmware my phone is asking for password. thanks in advance

  39. Successfully rooted 😀
    Thanks a lot 🙂

  40. Kiran says: Reply

    Thanks a ton..Just installed the new version on my s2..

  41. you guys are my heros. after a failed firmware upgrade via Kies (connection timed out twice), I got hold of I9100XWLP3_I9100O2ULP4_O2U and was greatful that my phone worked. However, this put an O2 logo on startup screen and used them as carrier (not too bad considering I am with Tesco mobile). problem was that I couldn’t use mobile data and feared a long call to Tesco helpdesk. Then discovered your very helpful website which helped put my ‘Android’s Soul’ right again. THANK YOU GUYS!!!

    1. Kapil says: Reply

      Thanks, man!

  42. HK says: Reply

    Can some one please post the procedure for installing this firm ware in GT-I9100g

  43. eldanabeky says: Reply

    it doesnt contain arabic language any help???

  44. sony Zaildar says: Reply

    this content is not available in your region i am from India how i can download this file plse help me i am install custom rom install s2 gti9100 and i lost my orignal IMEI

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