Galaxy S II

Samsung Galaxy S2 GT I9100 – Steps to Install ZCKJ1 Gingerbread 2.3.6 Firmware

Note for all Apple Mac Users: As of now you will not be able to follow this procedure in your Apple Mac based computers and only supports Windows based computers due to technical limitations.

Samsung Galaxy S2 LogoFor all those users who are having the Samsung Galaxy S2 phone and are from China can now smile as we will now in the due course of this article will see on how you can update your phone with the latest version of Chinese version of Gingerbread 2.3.6. This update comes as a great respite for all the users who are awaiting this update from a very long period. It almost seemed that Samsung had ignored Galaxy S2 when it came to releasing the updates for this World’s smartest smart phone. We just hope that Samsung reads this and comes out with an official update soon. So, coming back to the point as promised we are here with an article over a period of which you will be able to apply this Gingerbread 2.3.6 in your Galaxy S2 GT I9100 phone.

Please note that this update is not yet Officially rolled out to the users in China over the KIES and also we don’t have any ETA on by when this update will be pushed. This Gingerbread 2.3.6 version is dubbed as the ZCKJ1. Since it’s a latest beta release there will be some plus points about this firmware and some bugs too which are minor ones. The same will be solved in the future release. The update procedure which we will be seeing is not through the KIES as we will be using the Odin flash tool to update the phone.

Advisory: Please note that this update is a Chinese based and will contain some apps which will be Chinese and also the phone’s language will completely be changed to Chinese. So, we request you to only proceed with this update if and only if you are comfortable or know the Chinese language.

For your convenience we have broken this article into different pages wherein in this page we will see the list of quick enhancements along with the pre requisites in the next page and the instructions to update the phone in the 3rd page. Please note that it’s very important o follow all the instructions carefully or else you may end up messing up with the phone.

Disclaimer: We at Android ADVICES have ensured in all respects to ensure that all the information regarding the firmware update is mentioned correctly in this article. We hold no responsibility in any manner just in case if any damage happens to your Samsung Galaxy Tab which is a very unlikely event if you follow the instructions carefully.

Rooting Information: Please note that just in case if you have rooted your phone already then the rooting access will be revoked, but you can root the phone after updating. We will soon update you with an article separately on how to root the same.

Please note that applying with this version of firmware won’t mean that the phone will be rooted, as rooting voids the warranty. So, it’s completely safe to apply this update, the only condition being is that you will have to follow all the instructions mentioned in the article carefully. So, let’s proceed to the next page where we will see on what are the things you need to follow in the pre requisites section.

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  1. Wilson

    December 20, 2011 at 12:37 am

    Neal, i tried several Z-starting firmware but all failed. Below r the firmware code i tried.

    all the firmware failed and stop at modem.bin. Why? However i do tried on XWKI8 and it was a success.

    Same method, same pc. Bought the phone at united kingdom. I want a chinese firmware! Any solution for it?

    Check MD5.. Do not unplug the cable..
    Please wait..
    I9100ZCKI2_I9100ZCKI2_I9100OZHKI2_HOME.tar.md5 is valid.
    Checking MD5 finished Sucessfully..
    Leave CS..
    Odin v.3 engine (ID:8)..
    File analysis..
    Get PIT for mapping..
    Firmware update start..

    Complete(Write) operation failed.
    All threads completed. (succeed 0 / failed 1)

    • NeaL Pradeep

      December 20, 2011 at 12:51 am

      check with usb drivers and admin rights!

      • Wilson

        December 20, 2011 at 7:05 am

        May i ask what is ur meaning of admin rights? How can i confirm i hav the total admin rights?
        i’m using winxp and under the administrative acc….

        • NeaL Pradeep

          December 20, 2011 at 6:04 pm


        • Wilson

          December 20, 2011 at 6:24 pm

          =.= I’m using my own personal laptop to do all this stuff.

          I successfully installed all X-starting firmware but just cannot installed the Z-starting firmware listing above!

          However, luckily, thanks God! i manage to install my Samsung Galaxy S2 by using this firmware, code-DXKI2.

          This is a firmware origin frm singapore. So i guess it may gt Chinese inside!

          And YES, it gt! So to whoever tat fail to install chinese version frm china, may try singapore version. 🙂

          Anyway, thnx Neal for ur time and willing to response!

  2. Wilson

    December 18, 2011 at 6:33 pm

    If i bought the phone at uk, can i still updated the phone to chinese firmware?

  3. Kareem

    December 16, 2011 at 11:04 am

    Hi Neal, i bought S2 and there is a program on it named CWM after i opened it, it installed another program superuser. everytime i restarted my phone there is a yellow warning sign.
    phone data
    android 2.3.3
    baseband version i9100XXKF1
    build number GINGERBREAD.JPKG2

    can you help me in that.

    • NeaL Pradeep

      December 17, 2011 at 12:43 am


  4. lall

    December 10, 2011 at 10:47 am

    i m having the s2 of bell version gt -i9100m.. can i update it.

  5. akira

    November 29, 2011 at 8:54 pm

    erm .. i have done everything told …
    but still failed … den my phone cant boot …
    appear (phone) … [!]… (computer) ….


    • NeaL Pradeep

      November 29, 2011 at 9:03 pm

      update with XWKI8 version of firmware!

      • akira

        November 29, 2011 at 9:43 pm

        sorry .. i m quite noob here …
        how to update with XWKI8 ?
        can u teach ? step by step ?
        sorry for the trouble

        • NeaL Pradeep

          November 30, 2011 at 9:00 am

          yes, you can follow the article to update with the same!

  6. Rizwan

    November 27, 2011 at 6:16 pm

    @Neal, do we have any possibility of this being launched in english….

    • NeaL Pradeep

      November 27, 2011 at 8:58 pm

      for english we have other firmwares, z series is specifically for the chinese users!

  7. adanac

    November 24, 2011 at 6:44 pm

    trying to run the update but it freezes after the following

    running odin3 v1.85

    fireware update start
    Nand.write start

    then it freezes


    • NeaL Pradeep

      November 25, 2011 at 11:10 am

      it won’t work for locked phones!

  8. Jadek

    November 19, 2011 at 7:30 pm

    how can I can rid of several chinese apps that I can’t/won’t use??

    • NeaL Pradeep

      November 20, 2011 at 11:00 am

      its a chinese firmware, you need to install other firmware like xwki8

  9. adi

    November 9, 2011 at 6:30 am


  10. Alin

    October 31, 2011 at 4:32 pm

    Stiti cumva daca are si limba ROMANA MUltumesc?

  11. mouli

    October 31, 2011 at 4:18 pm

    can in use the Galaxy s2 os in Galaxy s GT-i9000

    • NeaL Pradeep

      November 2, 2011 at 10:42 am

      no mouli, it will damage the device

  12. Sunny singh

    October 30, 2011 at 1:37 pm

    Its da best mobile ive ever used s2 the boss oc all mobiles

  13. Vinoth

    October 29, 2011 at 4:21 pm

    This firmware is on error!!!….The file does not exists…

  14. deepak

    October 29, 2011 at 12:01 pm

    yes same to me also firmware cannot be downloaded please check link again

    • NeaL Pradeep

      October 29, 2011 at 6:13 pm

      links are now fixed, you can download now!

  15. Mir

    October 28, 2011 at 4:36 pm

    This firmware does now download ” Error 404 when trying to download.

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