Update Galaxy S2 I9100 XWLS8 Android 4.1.2 Jelly Bean Firmware

In past we shared custom ROM Avatar that able to push Android 4.1.2 Jelly Bean on your Galaxy S2 I9100. However, many Android user prefer to run official firmware and for those we have a good news. Samsung recently rolled out official Android 4.1.2 Jelly Bean firmware for Galaxy S2 I9100. The firmware we talking about is I9100XWLS8 Android 4.1.2 Jelly Bean that rolled out in Spain and should be installed in other region too. This firmware now available on Kies in Spain as well as can be downloaded from OTA update in Spain. However, if you live in other country or prefer manual installation then read through this guide to install I9100XWLS8 Android 4.1.2 Jelly Bean firmware on Galaxy S2 I9100 manually.

In this article we will guide you to install I9100XWLS8 official firmware update in Galaxy S2, model number I9100. For this, we will use a tool called ODIN that will help us to flash the stock 4.1.2 firmware in Galaxy S2 I9100. However, in this process you may lose all your existing installed apps and personal settings. You should follow this guide carefully to properly backup your data that you can restore later.

Key Features of This Update:

  • Buttery Smooth Performance & Great Stability (Thanks to Project Butter)
  • Full User Interface Revamp (Same UI as of the Galaxy S III and Galaxy Note II)
  • TouchWiz Nature UX
  • Samsung’s S Cloud services
  • Improved Camera features
  • New Lockscreen With Many Customization Options
  • New Features like Direct Call, Smart Stay and Pop-up Play
  • New Widgets (From Galaxy S III)
  • 2 Home screen modes
  • New Notification bar With More Notification Toggles
  • Google Now


Android 4.1.2 XWLS8 Firmware Details:

Version: 4.1.2
Date: 2013-01-16
Regions: Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom


This tutorial is only for Galaxy S2, model number I9100. Don’t try this guide in any other Android device. Check your device’s model number in: Settings » About phone. Also, we are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. Although, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

Pre Requisites:

Backup your data first using below mentioned instructions, so that if you lost any data you can recover it easily.

SMS & Call LogUse SMS, MMS & Call Log Entries Backup & Restore App
Contacts & SettingsUse Android default backup options.
Images, 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


  1. Make sure your device have at least 80% battery power. [How to Check Battery Percentage in Android Device]
  2. You already have USB Driver Installed for Galaxy S2 in your PC. [Download USB Driver]
  3. Make sure USB Debugging is enabled. [Guide]

If you follow everything that we mentioned above, you are ready to move into next page of this guide where we summed up detail instruction on how to flash Jelly Bean XWLS8 Android 4.1.2 official firmware update for Galaxy S2 I9100.

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  • budsixz

    will it work if i flash it
    i live in india???

    • arafat21

      It should work.

    • imteyaz

      Go ahead and flash it , this rom will work on any international variants of S2 i9100. (people with G model will have to wait for a little longer)

  • bond

    wt about battery life??

    • arafat21

      It’s so new but you should expect a low battery life as it comes with many more feature but that won’t be big enough to worry.

  • Aren

    do i need to reset my data phone before i do this procedure? thanks!

    • arafat21

      You don’t need to do anything other than what we mentioned.

      • imteyaz

        lol, it seems like you are a nob , always do your homework before giving any advice. Chao ;)

        • arafat21

          And why you think so? You should know official firmware installation procedure restore everything if your device running on official firmware earlier. We flash ROM and custom firmware regularly but may be you have better knowledge than us.

    • imteyaz

      Yes, it is always advised by the experts that u should factory reset your phone before & after flashing any rom . As it might conflicts with the earlier version of the rom , Also it will clear any cache file left over by the earlier version which will affect the smoothness & response of the phone.

  • piet

    I flashed it and it worked great. Even my apps and data aren’t gone. No I have to gain rootaccesss

    • arafat21

      Wait little, since this is very new firmware than what we have earlier (4.0.4) we have to wait for a pre-rooted kernel or something similar.

  • guddu

    installed on sgs2 gt-i9100 in india….if you are upgrading from custom rom please do data wipe and factory reset….working very nicely …no multiwindow though

    • arafat21

      Thanks for your input @guddu. It surely encourage other to do the same safely.

      • guddu

        thanks @arafat21:disqus for your great support…..

  • Kym Morris

    I already flashed an unofficial version (XXLS8) and when I tried to flash this official one last night, it all appeared to work correctly, but when the phone comes back on, nothing had happened! Any idea?


    • arafat21

      Just check your About devices under settings to see if your phone updated or not. Both are Android 4.1.2 Jelly Bean so you won’t see much change here.

      • Kym Morris

        yep, definitely didn’t update. main reasons I want to are that there are a couple of bugs in the version I use and also I’d like to go back to an official version for the benefit of my warranty.

        • arafat21

          Follow above guide to update it. This will also help you get back your warranty once we reset flash counter to 0.

        • imteyaz

          factory reset your phone & clear partition in recovery mode before flashing the rom.. i’m sure you will not regret after flashing this Rom. it is the most stable rom released by the samsung for S2 i9100 , All the best ;)

  • jayboy

    1st time flasher! running stock orange uk. – only the tar file to flash – just follow the instructions and you can’t go wrong! Easy! breaths new life in to an old phone – still quick! tested on quadrant 4425!

  • Milan

    Can i install this update on network locked phone?

    • arafat21

      Not sure about that as network usually have own modem. What’s your network and Country? We will find an original firmware for you so that if this firmware don’t work the way you want, you can always roll back using your original firmware.

      • Raul Roquez

        Hello arafat21, my question is the same. My S2 is locked on Orange network, Romania. Will this update work ? Will I lose the waranty?

        • arafat21

          If you own a network locked device then you shouldn’t try this else you have to find a supported modem to receive calls and other carrier related service. Installing official firmware won’t void your warranty.

  • Stuart Young

    update went without any problems, however kies is saying “Your Device’s current firmware version is not supported to update firmware via kies” anyone know why this is? (its the latest version of kies:

    • arafat21

      The firmware currently available in certain country. You will see the same massage until Android 4.1.2 Jelly Bean firmware available for your country via KIES.

  • elatos98

    I live in greece. This update will work? Tnx

    • arafat21

      As this firmware isn’t carrier branded, it should work.

      • elatos98

        Tnx for the quick respond. I will take it a look…

  • elatos98

    The contents of my internal sdcard will be deleted, after flashing this rom?

    • arafat21

      As this is an official firmware it shouldn’t delete anything on your internal SD CARD but still backup is recommended.

  • http://twitter.com/bootsy1 Chris Boots

    Major problems after flashing this version turns out the rooted kernel that was recommended completely fubard the phone , I ended up having to do a complete wipe and reinstall (everything wiped) and installed the jeboo kernel which actually works and now it’s ok although having loads of problems with the camera which worked perfectly on ics and not being able to get rid of the “use motion” annoying reminder.. Beware

  • santhu

    after installing can v connect it to kies air in pc ??

    • arafat21

      Yes you can.

  • Jim Forbes

    Jim Forbes -Hi – need help, after Odin START, I got FAILED message and the following in the message box –
    File Analysis
    Set Up Connection
    Set PIT file…there was no PIT file
    Do Not Turn OFF Target
    Can’t open the specified file (Line 1949)
    OSM All Threads completed (succeed 0 / failed 1)
    I did wipe and reboot – all seems OK the way it was
    Galaxy s2 GT-I9100 unlocked but previously a T mobile phone, UK (Opens with T mobile pre image)
    android 4.0.4
    Baseband – I9100BVLPE
    Kerneel – 3.0.15-I9100BVLPH-CL969772
    SMP PREEMPT Mon Jul 30 15:28:47 KST
    Build No IMM76D.BVLPH

    • arafat21

      If its carrier unlocked device then it should work. We really don’t know what’s going on.


    Hi there. I’m in South Africa and would like to run this ROM. How do I check if my phone is networked locked, and if it’s not will this ROM work with South African Vodacom network. thanks

    • arafat21

      Network lock device means, you bought the device from a carrier and you can’t use any other SIM but only what your carrier (such as Vodafone) given. If that’s not the case then you can flash this firmware without any problem.

  • arafat21

    Try reflashing the firmware then.