Update Samsung Galaxy S2 I9100G to Official Android 4.1.2 Jelly Bean XXLSR Firmware

Update Samsung Galaxy S2 I9100G to official Android 4.1.2 Jelly Bean

The new official Android 4.1.2 JB Firmware has been launched for the Galaxy S2 I9100G device. If you don’t want to use KIES or your device is rooted and you cannot upgrade using Kies, then you should use this post and learn how to manually flash the Android 4.1.2 stock ROM. Read the entire post and you should manage to flash this update at your first attempt.

Android 4.1.2 Jelly Bean features the XXLSR Firmware and it brings numerous new things that you can install on your device. It is the first Jelly Bean build that has reached the I9100G phone and it brings all the functions that you are normally finding on the Samsung Galaxy S3 and Samsung Galaxy Note 2 models. In order to be sure that you correctly flash this update, use the guidelines below and learn how to set up your smartphone for the manual installation of Android 4.1.2:

  • Use this tutorial only with the Samsung Galaxy S2 that has the model number I9100G. DO NOT USE THIS GUIDE WITH THE I9100 SGS2 (for that guide you can click here).
  • This tutorial will revoke root for devices that are rooted. The warranty will be restored, too. NOTE: The data from your device’s system partition might be deleted in the process.
  • Use a computer with Windows OS.
  • Make sure that your PC has the Samsung USB Drivers installed. If you don’t know then you can download and install the drivers using these links: Samsung USB drivers for Windows 32-bit (x86) OS | Samsung USB drivers for Samsung 64-bit (x64) OS.
  • Open the Settings menu of your devices, scroll down and then go to Developer Option and enable the USB Debugging option.
  • Sync your saved Contacts with your Gmail account.
  • Disable all the antivirus software that is running on your computer. It will prevent any application from interfering with the updating process.
  • Charge the phone’s battery before you get to the tutorial guide. Make sure that the power level is over 50%, so that the phone won’t power off while you’re flashing the Android 4.1.2 update files.
  • Read the entire post and make sure that you don’t skip any of the steps listed below.
  • This is a guide for advanced Android users. You should not held us responsible in case you brick the phone or you lose any data files in the process.
  • If you cannot complete the installation, then you should ask for our help in comments.

All the guidelines above should be enough and your device is now prepared for the updating process.

How to install Official Android 4.1.2 Jelly Bean update on Samsung Galaxy S2 I9100G:

  1. Download the XXLSR firmware update from HERE or HERE.  Save the zip file on your PC.
  2. Extract the contents of the zip and save them in a single folder. NOTE: the file will have a .tar.md5 or .tar file extensions. Do not extract any further than that.
  3. Download ODIN 3.04 from HERE. Save the zip on PC. Extract its contents in a single folder, you can choose to save them in the same folder created at step 2.
  4. Power off your smartphone completely by removing its battery. Re-insert the battery after 5 seconds.
  5. Next, press and hold Volume Down, Home and Power buttons. It will load a warning message and you should press Volume UP to launch Android Download Mode,
  6. Go to Odin folder and launch the ODIN executable.
  7. Now you can connect your smartphone to your computer via USB cable. NOTE: Odin should say ‘Added!!’, which means that the drivers are installed and you can get to the next step. If that confirmation alert doesn’t appear in Odin, then you will to change the USB port or re-install the Samsung USB Drivers on your PC, and then start all over from step 4.
  8. In ODIN, click the PDA button.
  9. Browse your PC for the ‘I9100GXXLSR_I9100GXXLSP_I9100GXEFLSR_HOME.tar.md5′ file. It is the files extracted at step 2. Load it into Odin. NOTE: don’t change any default Odin settings and make sure that the ‘Re-Partition’ option is disabled.
  10. Press the START button in ODIN in order to launch the updating process. Wait until the install is complete.
  11. When Odin completes the Android 4.1.2 update you will see the ‘PASS’ message within the application. The phone will reboot automatically.
  12. Unplug the USB cable when the Samsung logo animation appears.
  13. Enter your Google Account when the welcome screen of Android 4.1.2 Jelly Bean appears.
  14. Test the new XXLSR firmware and that should be all, you’ve managed to successfully update your smartphone with its latest Android OS.

NOTE: In case ODIN doesn’t complete the update or the FAIL alert appears, then you will need to close the application, unplug the phone from PC and remove the it’s battery. Re-insert the battery after 5 seconds and then you will have to repeat the entire tutorial starting with step 5. The second time you should be able to flash the firmware update. If you can’t complete the tutorial, then you should leave a detailed comment at the end of this post I’ll try to come up with a solution to your problems.

NOTE2: if ODIN says ‘PASS’ but the phone doesn’t go past the Samsung boot animation logo, then you should unplug the phone from PC and then you will have to wipe all data from the /system partition. Use the instructions below and you’ll complete this process:

  • Power off the device completely.
  • Boot into Recovery mode by pressing Volume Up, Home and Power buttons. Release the buttons when the main recovery screen appears.
  • Select ‘wipe data/ factory reset’ option. Confirm.
  • Return to the main stock Recovery phone when the factory reset is complete.
  • Select ‘reboot system now’.

That’s it, now your phone will boot into normal mode and with the Android 4.1.2 Jelly Bean OS successfully installed. Enter your Google Account details and take control over your smartphone once again.

These were all the steps you had to take in order to make sure that you successfully update your smartphone to the latest Android operating system. For any other extra questions, use the comments section below.

NOTE for Root users: Return to our website soon as we will post a tutorial that will teach you how to successfully root the Android 4.1.2 XXLSR for your I9100G smartphone.

  • Mohidinekhan Ibtiaaj

    if ever i flash this mo my gs2g will i be able to use it on any network as am from mauritius????

  • Mansoor Gombe

    Wow!! This is very helpfull i just follow the steps u give and Upgrade my S2 OS to Jeally beam 4.1.2. Thanks alot for the help.

  • mohamed

    very easy nice steps … Worked out of the box ! Thank you guys

  • Manish Singh

    Thank you very much. I just installed it. It’s awesome.

  • pub

    Thanks it worked great like a charm… can’t believe i have similar features of s3 :)

  • micho

    it didnt work because i have the zclp5 chinese software so if anybody have some solutions plz share

    thx

  • sam

    thanku soo so much man !! :)

  • krish

    my csc is unknown after flashing this..pls suggest..

  • http://www.facebook.com/Xiquad Alex Dubchak

    at the end of flashing i get a failed message, please help

  • Rayzo

    thats great…installed on my device…but why not have samsung cloud service and dropbox like nonG get??

  • Jit Banerjee

    updated my SGS2 Jelly Bean 4.1.2 :) thanx alot….so far so good :P

  • micho

    plz i want some solutions on how to replace the zclp5 chinese software

  • david

    thanks man for your effort, it works great.

  • sam

    But cant find the S cloud feature
    Please reply!!!

  • Abdallah Dajani

    you guys are great thanks for the help

  • Nabeel

    I tried to update my Samsung Galaxy S2 I9100G to Jelly Bean 4.1.2, but It was completed if displays FAIL message at process hidden.img at the end. My phone is not working not as I tried to start it. It displays message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again.”. Please help me as my phone is not working now. Thanks

    • Sunday

      Did you found a solution?

  • Nabeel

    I tried to update my Samsung Galaxy S2 I9100G to Jelly Bean 4.1.2, but It was not completed and it displays FAIL message at process hidden.img at the end. My phone is not working not as I tried to start it. It displays message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again.”. Please help me as my phone is not working now. Thanks

  • Thusitha Jayakody- Srilanka

    Thank you very much guys… I updated it without no worries……………. Thanks again

  • Nabeel

    I tried to update my Samsung Galaxy S2 GT – I9100to Jelly Bean 4.1.2, but It was not completed and it displays FAIL message at process hidden.img at the end. My phone is not working not as I tried to start it. It displays message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again.”. Please help me as my phone is not working now. Thanks

    • http://www.facebook.com/avinash.maharaj.92 Avinash Maharaj

      i did that already u have to re install previous software using odin

  • pain

    Iam getting an error message after downloading exactly 60% through Folx download manager. The error message is “critical error(a file on a server and a local file don’t match(state:7 errorcode:0))

  • Dee

    When will it come in India??

  • Rayzo

    how to root it???

  • http://www.facebook.com/med.hadjhassen Med Hadj Hassen

    Hi,
    i tried this update and everything was perfect, but the ROM I downloaded from the link above was 4.0.4 and not 4.1.2.

  • Raj Rulz

    Hello uploader can we update this JB 4.1.2 , with indian variant I9100G also?

  • Raj Rulz

    rply dude…

  • Raj Rulz

    man not updating it says FAIL………..

  • Raj Rulz

    for all dudes who got FAIL msg, when u connect ur phone with ur pc dont turn on KIES in ur pc
    keep it off then u will successfuly update jelly bean……hope u got answer

  • epi

    I’m from Malaysia and can I upgrade my sgs2 to JB without any hesitant?

    • jini

      Hi I was from India, I installed it without any issues.

      • aaliiiiii

        Yet i not get JB update for galaxy s2 I900G. I also from india

      • Fido

        Seriously?? Do you have a I9100 or I9100G.

    • tanglk

      i am also from Malaysia, no issue.

      • steven

        I heard that u can do it in malaysia, bt the problem is that we are unable to text in chinese, is that true?

    • irwin

      yah i think you can..i did it today and it worked like a charm, as long as it is i9100g

    • Rashvin

      Yes you can.. I’ve done it succesfully

      • http://www.facebook.com/peter.choowp Peter Choowp

        No auto shutdown as i got this problem for more than twice per day.

        • abhishek

          Disable smart stay under display settings on my S2 and now S2 does not
          go blank anymore.Try this.

          • Steven

            I heard that u can do it in malaysia, bt the problem is that we are unable to text in chinese, is that true?

  • jini

    Thanks. It works for me also. :-) great work.

  • Adil

    Thank you so so much!! Living in a country like Pakistan, I couldn’t update my phone using kies, so your guide really came in handy! Thanks man! :D

    • Malik

      i m not getting pass from step 5

  • Irwin

    Thanx for the procedures and files…ma phone is finally official jb hurrah

  • vipradish

    Hi. I am from India. I tried to update to jelly bean on SGS 2 i9100g version. The Odin message says hash at MD 5 is invalid. Please help me.

  • rjv

    I’m from India and I was able to flash the ROM on my phone GT-i9100G without any issue.
    The update looks good so far.

  • http://www.facebook.com/colin.rice.56 Colin Rice

    odin cant get passed the MLO PART, any ideas please

    • ife

      i am having this same issue as well; pls help.
      been unable to rollback or boot the phone

  • Henry

    I have a Samsung Galaxy SII GTi 9100 G. bought in China. After software upgrade via KIRES new data are:
    Model Number: GT-I9100G -Android version: 4.0.4 – Baseband version: I9100GZCLPL
    Kernel version: 3.0.8-1067026 se.infra @ SEP-88 # 2 – Build version: IMM76D. ZCLP
    Following your guidance, I tried to update to Android 4.1.2 Jelly Bean features the XXLSR Firmware.
    All goes well almost to the end of ODIN; a few seconds
    before the end it displays a FAIL alert.
    I have tried several times to repeat the operation
    following step by step your guide, but the result is always the same.

    What can I do? Can you help me?
    Thank you.
    Henry.

    • micho

      You should download the right pit file for i9100g you google it and in odin place the pit file and the new software in pda and then uncheck repartition and click start .
      I tried it because i had a chinese and it worked

      • Dr.Khan

        @henry i have the same model but i still not started the update
        @micho please can u share the link to download exact files for the above mentioned model ..as i could not find it. can u please dot it .thnx

  • Vijay Kumar

    i complete all the process and it is successful
    but my vibrator is not working

  • Guest

    no google application is running like play store even after internet is connected…it says no connection

    • http://www.facebook.com/mathursuchit Suchit Mathur

      help me!

  • Abhishek

    I am from India and upgraded device.Upgrade was smooth and running fine. Thanks for the article.

  • Satya

    It does not work for me. It’s failining. It shows the following msg: (I am trying to install from India).
    Any support is truly appreciated.
    Added!!
    Enter CS for MD5..
    Check MD5.. Do not unplug the cable..
    Please wait..
    I9100GXXLSR_I9100GXXLSP_I9100GXEFLSR_HOME.tar.md5 is valid.
    Checking MD5 finished Sucessfully..
    Leave CS..
    Odin v.3 engine (ID:9)..
    File analysis..
    SetupConnection..
    Added!!
    All threads completed. (succeed 0 / failed 1)

    • Satya

      I made a mistake in 5th Step. Works fine now. It took appox 8 mins from step 5 to the end.

      Thanks for the post.

  • Andy

    Updated my s2 9100G inida. Works perfectly , thanks a lot

  • Raj Rulz

    dont download dis man, itz shit..
    my phne is rebooting itself many times & samsung dudes said that after updating it io JB 4.1.2, 1GB of internal memory(11gb) would lost i mean it will be used, bt nthng happened like that, and some features also missing dudes…..

    wait 4 official update that popup through kies…

  • http://www.facebook.com/rhythmm.tuliyani Rhythmm Tuliyani

    do i have to root my samsung galaxy s2 i9100g before instaling this update?reply ASAP

    • Parth

      no you do not have to root for the update. If it’s not rooted than too it works like a charm..:)

      • noon

        how to revert back to my last version? help required!!! this update sucks, keyboard sucks, phone is becoming laggy

        • http://www.facebook.com/parth1193 Parth Rathod

          if you want to degrade your to stock firmware than odin is the best software…
          google how to install the os you want, you’ll get plenty of sites to guide…!!!

  • parth1193

    does the update via odin work on the rooted phone or it doesn’t matter whether it is rooted or not??

  • Parth

    do i need to root the phone before i upgrade it via odin???

  • Mohan Kumar

    Guys i’m from india…installed jellybean today and it works well n gud…..
    just follow the steps mentioned and it works…..
    Thanks for the update man…..

  • Rashvin

    Works like a charm ! Sucesfully flashed it.. But why is it laggy ?

  • Aakash

    fantastic! it is so easy to update your android mobile

    thanks

  • http://www.facebook.com/peter.choowp Peter Choowp

    I just updated yesterday. Thought being successful but the phone seem
    likes automatically shutdown itself for more than twice. Any chance to
    check the errors? I rooted my phone before.

    • Dinesh Mittal

      same here..any solution…i am going back to ics..

  • MUBBI

    I am from Saudi Arabia. I tried to flash my phone with JB but it got softbricked, so i had to flash again using 2.3.3.
    Will i be able to flash JB successfully now?

    • faizal

      i tried to update my sam gal s2 to jelly bean with odin, nw it shows a phone symbol connected to computer with an error symbol. what can i do? plz help me..

  • Abhishek

    I had updated this firmware about 10 days back, but now device is getting shutdown automatically. happening 2-3 in a days… any solution for this behavior.

  • Guru

    hi i am from india……I tried to update my Samsung Galaxy S2 I9100G to Jelly Bean 4.1.2, but It was displayed FAIL message at starting i removed the battery and inserted again after inserting it i press the power button, It displays message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again.”. Please help me as my phone is not working now. Thanks

  • abhishek

    It does not shutdown the device, just the display, try calling your number before rebooting the device.there is some problem with the display stand by ….

    • abhishek

      Guys…I disabled smart stay under display settings on my S2 and now S2 does not go blank anymore. It is up for last 6 days. Whoever is facing this issue. Try this.

      • Eric I-Mys

        i checked. my smart stay is disabled but it always go blank.. who can help to solve the problem..

  • sandeep

    Its great. Phone looks superb

  • gatai tangan

    i have root and updated my phone to version 4.2.2. but now im not happy with that version. can i use this method to turn back to 4.1.2? please help me.

  • xia

    i tried it 10x . . .it fails :( why , ,?

  • marc

    it failed. .how can i restore it?i cant use my phone

  • Sunday

    I tried to update my Samsung Galaxy S2 GT – I9100to Jelly Bean 4.1.2, but It was not completed and it displays FAIL message at process hidden.img at the end. My phone is not working not as I tried to start it. It displays message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again.”. Please help me as my phone is not working now. Thanks

  • Mohammed

    the internet connection became too slow after upgrade……….please help

  • thye

    i tried to connect my phone to my pc but odin did not appear the word added..how ?

  • Tony

    Thank you

  • leo.sahay@gmail.com

    The ODIN doesn’t say “Added” as per the article even after installing all the usb drivers or changing the usb ports.
    any help will be appreciated

  • Jan

    Update went okay…but now my phone and messaging don’t work…what’s that all about???? Need help!!

  • joe labu

    Do yesterday succes

  • Steven

    I saw a lot of them can apply this update in Malaysia, just one concern, after installing this firmware, will I able to use Chinese or only English available?

  • http://www.facebook.com/jee.vee.14 Jee Vee

    Thank you so much …. you are such a life saver!!!!!!!!
    <3 you
    :)

  • Zufar

    Great !!! It worked for me very well Thanks alot. Appreciate it.

  • Ammar

    My computer switched off during the process and I can not set my mobile to down load mode any more. Pls. how to recover my mobile?

  • parv

    sir i have encountered a problem need help asap

  • nephronx

    i’ve issue about the camera. when open, there buzzing sound. after focus it gone. anyone have same issue like me?

  • prax

    hi all.. i upgraded my S2 but scren size is reduced by some point mm. it jst shows blank

  • Amar

    I just Updated through dis
    But com.android.phone Always keeps on crashing . I can’t make calls . What do I do?

  • Dr.Khan

    Hi Guys i have Samsung galaxy S2 Model GT-I9100GZCLPL Os 4.0.4 bought in china in the beginning i was unable to use Google play store so i took it to install new Os but could not be installed and suddenly my mobile Bluetooth stop working before with one issue now with 2 issues i.e Google play store and Bluetooth. wanna know if i can update my mobile to 4.1.2 and it will be helpful or not ? can u please guide me in it.

  • Usman

    HI sir i am from pakistan…
    so may i upgrade my s2 GT-I9100G through this procedure??????????
    plz tell me quickly because i want to upgrade my phone…
    Thanks

    Reply me on my ID (muhammad.usmanakbar786@gmail.com)
    m waiting ur reply

  • Pawan

    Hello Guys,

    I was trying to re-instal the JB 4.1.2 on my S2.. however, that din
    work out… now my phone is stuck on “Firmware upgrade encountered an
    issue, please use kies……..”.. the major problem here is.. I have tried
    all methods.. removing the battery for an hr almost.. pressing the
    power+home+volume up/down key.. but my cell is still hung up on that
    screen… nothing is happening.. can someone please tell me what to do?
    Also, now my cell phone is not being detected on my PC (Kies cannot
    detect it)… Please help!!!!!!!!!!!!!!!!!!!!!!!

  • Neven

    my i9100G died off suddenly, it can only boot until the logo page. Then i came across this post and actually tried the steps. i tried twice and it is failing at the cache step straightaway. I cannot enter recovery mode. since i am in malaysia, i downloaded the firmware of 4.1.3 from samsmobile and tried with it. anymore information needed for me to get some help?

    • Neven

      Added!!
      Enter CS for MD5..
      Check MD5.. Do not unplug the cable..
      Please wait..
      I9100GDXLS8_I9100GOLBLS8_I9100GDXLS2_HOME.tar.md5 is valid.
      Checking MD5 finished Sucessfully..
      Leave CS..
      Odin v.3 engine (ID:7)..
      File analysis..
      SetupConnection..
      Initialzation..
      Get PIT for mapping..
      Firmware update start..
      cache.img
      NAND Write Start!!
      Complete(Write) operation failed.
      Added!!
      All threads completed. (succeed 0 / failed 1)

  • igor

    updated firmware successfully. thanks