Samsung Official 4.2.1 Leaked ROM + Root for Galaxy S3 GT-i9300!

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Samsung’s official 4.2.1 “leaked” ROM is out in the wild and you can grab a copy of the leaked firmware and flash with ODIN and also there’s a rooted version with custom recovery for those of you already rooted on the Galaxy S3 GT-i9300.

What’s new with Android 4.2.1 TouchWiz?

Well, you can expect some of the newer Android 4.2.1 features on it like lockscreen widgets and quick toggles (swipe from top to bottom with 2 fingers for quick access). If you’ve tried some of the latest Android 4.2.1/4.2.2 AOSP ROMs, you know what to expect. Photosphere is still missing in action though but don’t fret too much as this isn’t a final version just a “leak”.

If you can’t wait for the official 4.2.1 to be released or just want to take a peek at what Sammy’s been working on, flash the rooted version or even the completely stock tar.md5 via ODIN and let me know if you find any other new features.


Download TugaPower ROM (leaked Android 4.2.1 + Root + Custom CWM Recovery)


Download leaked official Android 4.2.1 ROM (flash in ODIN, no root or custom CWM!)

Credits – TugaPower

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20 Responses

  1. Mark says:

    Hey Max, do I need to Factory Wipe for this via Odin?

    • Franksr says:

      What is the proper procedure for installing the 4.2.2 or 4.2.1 firmware into my unrooted Galaxy S3? Does it matter which carrier you are using when you do this?


    • Franksr says:

      Doesn’t this upgrade have to be for a certain carrier? Verizon, AT&T, or Sprint.

  2. Manoj Guruge says:

    hey man i installed the Tugapower ROM but i had a problem with my messaging app.. didn’t work or open :S.. any suggestions?

  3. Mark says:

    Av got the same problem wiv my phone

  4. mark says:

    Hi how do I get the 4.2.1 software off my phone as I cont ues my txt message but aprat form thet it works ok I just wont the 4.1.2 till the full working 4.2.1 software comes out as am new to all this

  5. Manoj says:

    Try downloading the official ROM u get above (the 924mb one).. And flashing it thru Odin.. I haven’t had any problems with it so far

    • mark says:

      I av you cont txt wen you put the 4.2.1 software on

      • Manoj says:

        im not too sure what your q was but i havent had the text msg problem after i flashed thru odin.. if thats what ur asking 🙂

        • Josh says:

          I’m also having an issue with the native SMS app force crashing before it’s even loaded after using ODIN to install the non-rooted version.

          Any suggestions?


      • Josh says:


        I came across the same issue.

        I noticed when I installed the ROM using ODIN, it loaded straight onto the Home screen without going through the usual setup wizard.

        I thought nothing of this at the time.

        When I did a factory reset, the next time the phone booted, I was taken to the Setup Wizard. Admittedly this seemed to default to Hebrew, but it’s relatively easy to change the default language and keyboard layout.

        This seems to have fixed the issue I was having with the SMS app. It now works.

  6. jack1234 says:

    Hello. Binary Counter ? guarantee missed ?

  7. how do i get my boyfriend back after he broke up with me says:

    This web site truly has all of the info I wanted about this subject and didn’t know who to ask.

  8. Shox says:

    I have rooted myphone and put up custom ROM trough TWRP. How can I flash now the leaked official Android 4.2.1 ROM (you say no root, CWM, just thorig ODIN). Can U gve me some instruction? thanks

  9. Josh says:

    Is anyone using the official non-rooted version experiencing random freezes, that go of their own accord after a few minutes or require a study reset to resolve?

  10. Andres says:

    Hey guys, i need some info here, i flashed 1 hr ago the unrooted version of 4.2.1 thru mobile odin, it works ok so far, but it seems i can’t root or flash another rom or ofw cuz odin tells me no PIT partition, any idea on this? Thanks

    • Andres says:

      Come on no1 has any clue of what’s going on? I gotta flash again cuz that damn leak is draining my battery like crazy.

  11. Josh says:

    I’ve posted my experiences with the official unrooted ROM at the link below on my blog with some fixes that helped me out.

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