Good morning, Galaxy S III users. Want to start off your week with a spiffy new software build? Then the folks at SamMobile are happy to oblige. They've got their hot hands on a leaked build of the Android 4.2.2 (JDQ39) update for the S III, packing the standard Jelly Bean 4.2 upgrades and more than a few features back-ported from the newer Galaxy S4. The flashable ROM posted to the site isn't exactly official - it's cobbled together from dumped files - but flashing it via Samsung's Odin software won't void your warranty.

Some of the features already spotted in the leaked ROM include the lockscreen, driving mode, Voice Controls, an updated Settings app, gallery, S-Voice, new screen modes, and a bunch of other software and visual tweaks from the TouchWiz build first seen on the Galaxy S4, as well as a host of new settings and the Smart Watch widget. A lost of the features in AOSP Android are either replicated with Samsung's services or completely superseded by its apps (like the new clock, keyboard and calendar app) but the Daydream feature is in there, plus all of the under-the-hood changes to Android itself.

Screenshot_2013-05-18-17-29-06 Screenshot_2013-05-18-17-31-08 Screenshot_2013-05-18-17-32-36

This firmware is for the international Galaxy S III (i9300) model only - the various U.S. versions won't be able to run it. SamMobile also notes that this unofficial build does not include a radio, so your device will revert to whatever radio software you've currently got. All the necessary files and instructions, plus the Windows Odin program, are included in the ZIP hosted at SamMobile. Have at it.

SamMobile - Android 4.2.2 Jelly Bean leaked firmware for the Galaxy S III

Jeremiah Rice
Jeremiah is a US-based blogger who bought a Nexus One the day it came out and never looked back. In his spare time he watches Star Trek, cooks eggs, and completely fails to write novels.
  • http://www.facebook.com/jpardinha João Pardinha

    Nice ;)

  • kj

    Wont void warranty? Dont you need to have root to flash this? I thought if you have root you dont have warranty!

    • Aymen Fadhel

      Nope you don't need root to flash samsung's official firmwares, just Odin (assuming the bootloader is unlocked).

      • kj

        Another question sorry ;) can i unlock the bootloader without rooting.dont want to void my warranty! Thanks

        • Aymen Fadhel

          what phone model do you have ? If it's the i9300 then the bootloader is already unlocked so you can flash right away.

          • kj


  • Fred

    I hope I'll get my update from T-mobile within next year. I don't get why it takes so long for carriers to add bloatware in an update.

  • Roy

    no photosphere?

    • http://twitter.com/jokesyn8 Jokesy

      Photosphere is Nexus only!

      • Willmer Barahona

        i beg to differ! i got my S3 with photosphere!

        • http://www.appfeed.net/ Rami

          but obviously not on a stock S3, you have a custom ROM

  • http://www.kizipapa.com/ Kizi 3

    I wouldn't dispute the initial thoughts in your attention-grabbing article. i feel your content is of nice quality, sensible and it extraordinarily drive readers to assume. i prefer your ideas.

  • Nuno André Catarino

    I have a Galaxy S3 i9300 in portugal locked to Vodafone. The update arrived a few minutes ago!!

    • RM37

      You're update is 4.1.2, not the one mentioned in this article (4.2.2). That update came out a month ago.
      I'm from Portugal too! ;)

  • http://www.facebook.com/mehrabh Mehrab Haque

    My gs4 lags when compared to my iphone 5 its so sad :(

    • http://www.facebook.com/chris.talty.9 Chris Talty

      Have you disabled Svoice and loaded nova launcher?

      • mesmorino

        my S3 actually lags like crazy with Nova, I had to switch back to Touchwiz.

      • http://www.facebook.com/mehrabh Mehrab Haque

        I did the .5 animation too but yeah its just slower and not as smooth i dont blame the phone it just nedds potimisation

  • Paul

    http://forum.xda-developers.com/showthread.php?t=1858298&highlight=search+this+forum This ROM released 2 days ago and uses build JDQ39 as its base...

  • Alekh Khanna

    Err.. "A lost of the features in AOSP Android are either replicated". Yup, I'm lost ! :P

  • Chris R

    Will the Canadian version be receiving the update