Download & Install official Android 4.1.2 Jelly Bean XXELK4 Firmware for Samsung Galaxy S3

Want to enjoy Multi Window feature (like Galaxy Note 2) on your Samsung Galaxy S III GT-I9300? Yes, you can try it now with other interesting features like Page Buddy, customized notification panel, Smart Rotation, continues input in Samsung Keyboard, Paper Artist and new Gallery applications too. All of them are available in latest leaked official Android 4.1.2 Jelly Bean XXELK4 Firmware for Samsung Galaxy S3. And it is pre-rooted as well so you don’t need to root it yourself. Note – this is a test firmware. Only install it if you are willing to test the risk as a beta tester…

Android 4.1.2 Jelly Bean XXELK4 Firmware for Samsung Galaxy S3

I seldom try official leaked firmware nowadays. There are too many of them (yes, more test firmware for Samsung Galaxy S3 will come). Want to stay ahead of others? Try it and bear the risk.

Installation guide ~ How to install firmware on Samsung Galaxy S3 with Odin? (Video)

Download official Android 4.1.2 Jelly Bean XXELK4 Firmware for Samsung Galaxy S3 here.


  1. Hi there,recently I flashed siyah kernel and I have read the description from the author,it says siyah only support cm 10 or samsung jelly bean.

    If I want to try this firmware,how do I remove siyah kernel or return to official kernel ?

  2. hola bros!!!! pues le cuento que recien acabo de instalar omegaroom v33, basado en jelly bean 4.1.2 y funciona muy bien! el multiview funciona exelente en general verdad, me imagino algunos detallitos los van a ir perfeccionando, el asunto esta en que no esta Smemo entre las aplicaciones para usar en multiventana lo cual me parece muy mal…. que me cuentan ustedes?

  3. jayce helpp mee
    please give me the mediafire link
    cause my download speed at my country is extremely slow
    and when i download it was just stop
    please helpp mee
    no more hotfile
    just mediafire pleasee…
    help me jayce :'(

  4. Hello Jayce,

    Just want to ask some questions, is it true regarding the modem as what Afiq there mentioned and how do we solved that problem?

    Another one is, currently using this and no issue found. Everything works find and I give it a day to see whether the lag on phone starting resolves. However what worries me a bit is the antutu benchmark scoring. Mine previously from Malaysia JB unrooted was around 12,000. Now only around 7,000 to 8,000 although no real effect on performance. Any idea why this drastic drop on scores?

    Thank you.

  5. Hi Jayce

    I got message advising the official update via kies. Can I update via kies if I have rooted?

    I get message “Your device`s current firmware version is not supported to update firmware via kies”

    Please let me know what my alternatives are.


  6. I received notification about formware upgrade via Kies. I accepted terms & Now I get message “Failed to run firmware upgrade. Unkown error occurred”

  7. Hi Jayce,

    I installed this 4.1.2 two weeks ago and it’s good. Seems that contacts and phone are still laggy.
    I wonder why my device status is “normal” as it is pre rooted.


  8. Hi Jayce

    I have installed 4.1.2. Although everything seems to be working okay, in some instances, a red “frame” appears around the outside of the screen. This only occurs occasionally & I was wondering if it is part of the new firmware.


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