Download Android 4.2.1 Jelly Bean XXUFMB3 Firmware for Samsung Galaxy S3

Yes, Samsung does not let all Samsung Galaxy S III users down. Here is the latest leaked Android 4.2.1 (JOP40D) Jelly Bean XXUFMB3 Firmware for Samsung Galaxy S3 (It is a test release firmware, not official). What are the new features? Improved ripple effect on Lockscreen, lockscreen with widgets, daydream, new additions in Notification Center, actionable notifications and voice command are some that have been found. There are more for sure because this firmware should be prepared for Samsung Galaxy S4 as well. As usual, this test firmware increases binary counter. ROM junkie, flash it at your own risk…

Android 4.2.1 Jelly Bean XXUFMB3 Firmware for Samsung Galaxy S3

Is XXUFMB3 Firmware for Samsung Galaxy S3 good? Let me know after you try it. Thanks.

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

Download Android 4.2.1 Jelly Bean XXUFMB3 Firmware for Samsung Galaxy S3 here.

32 COMMENTS

  1. I am from India and I bought S3 (I9300) last week,
    In eager to update my device to latest, I updated to official jelly bean 4.1.2 via OTA after 1 day use on ICS.
    Now I feel I made mistake as the 4.1.2 is kind of slow and I feel I should go back to ICS.

    But I dont know how to go back to ICS without ruining my samsung warranty.

    Can you please let me know if that is possible to go back to ICS without ruining warranty?

    Also, updating to this 4.2.1 test release will make any difference and will it also ruin my warranty?

    Please help as I am new android user, I was with symbian E63 nokia before.

    Thanks in advance… πŸ™‚

  2. Hi Jayce,
    This question is not related to the ROM but rather the option where we can upgrade the Camera firmware via the USSD code. I have updated my camera firmware before with any problems but suddenly with a new ROM (*not this one), I found that the PHONE TO CAM WRITE FW button is disabled. This has never happened to me before. Any advice would be appreciated. Thanks.

  3. Hi joi

    I am using it.but now after installing the firmware u asled me to install the samsung
    Kies is not supporting my device.

    Wht shall i do.

    Thnx

  4. I rooted my GalaxyS3 and then saw that I did not need that level of control. Unrooted and now I cannot do firmware upgrade. Want to use your advice here but do not see where to download the firmware. Just to confirm, I am using a Galaxy S3 unlocked, bought in USA, living in Israel.

  5. Hi. My dock icons cannot be arranged since i upgrade to 4.1.2 before i can renove or put another icons on the dock bar. But now it didnt work.

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