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AT&T Samsung Galaxy S4 i337 Getting I337UCUAMF3 Software Update

The Samsung Galaxy S4 was officially introduced in March 2013 and made available for purchase one month later, becoming one of the best-selling smartphones in the world, with 20 million units sold in less than two months after its debut. Well, the smartphone is also available on the US market and AT&T is one of the carriers that have it in its portfolio.

If you are among the AT&T customers who purchased a Samsung Galaxy S4 you might want to hear that a new software update is rolling out for your smartphone. In case you haven’t received the software update message in the notifications area and you are eager to perform the Samsung Galaxy S4 update, you should check for it yourself by heading to Settings > More > About Phone > Software updates, then hit the Check for Updates button and follow the on-screen instructions.

Anyway, you shouldn’t get too excited about the software update for the AT&T Samsung Galaxy S4 as besides the two additional LTE bands that will be enabled and some NFC improvements, there’s nothing else in the firmware package. Of course, there will be some bug fixes too, like fixed issues with rebooting, WiFi compliance, some other minor improvements.

You might also want to know that the new software update for the AT&T Samsung Galaxy S4 has a size of 359 MP, therefore we are recommending you to download the software package while connected to a WiFi hotspot in order not to harm your data plan. After updating your AT&T Samsung Galaxy S4 the Baseband version should change to I337UCUAMF3, while the new Build number will be JDQ39.I337UCUAMF3.

I remind you that the Samsung Galaxy S4 is coming pre-loaded with Android 4.2.2 Jelly Bean customized with Samsung’s proprietary TouchWiz Nature UX interface. There are two international Galaxy S4 variants currently available on the market, one powered by an octo-core Exynost 5 Octa processor (I9500) and another sporting Qualcomm’s quad-core 1.9 GHz Snapdragon 600 CPU (I9505).

Because of the LTE limitations of the Exynos 5 Octa chipset, the Samsung Galaxy S4 I9505 is currently being sold on the North American market, but the AT&T variant is codenamed i337. The smartphone comes with a 5-inch full HD display with Super AMOLED technology, while sporting 2 GB of RAM and 16/32/64 GB of internal storage.

In terms of connectivity, the Samsung Galaxy S4 comes with LTE support, HSPA+, NFC chip, infra red blaster, Blutooth 4.0, and microUSB 2.0, while boasting a rear-facing 13 megapixel camera with autofocus, LED flash, simultaneous HD video and photo recording, image stabilization, HDR, panorama, and 1080p@30fps video recording support.

Did you update your AT&T Samsung Galaxy S4 to I337UCUAMF3 firmware? Any visible improvements? We are waiting for your feedback in the comments section.

  • RDomke

    My AT&T Samsung Galaxy S4 upgrade to I337UCUAMF3 firmware, Android version number is still 4.2.2. Anyone else have this?

    • Steven Rogers

      The Android version should stay the same, but the firmware version will change.

      • RDomke

        Thanks for the reply. It eased my mind a little.
        I had thought the version number was going to be 4.3.2. I noticed too that kie’s says –

        Firmware information

        “your device’s current firmware is not supported to update via Kie’s.”
        Current firmware version : PDA:MF3 / PHONE:MF3 / CSCMF3(ATT)
        Kie’s does work other then that. Think its anything to worry about?
        Re-Reading my post–hell I am a worrier. I just enjoy this stuff.
        Thanks again.

        • tom

          Had the same problem with kie, samsung was no help

  • Brenden

    My Galaxy S4 from AT&T doesn’t even say there is an update available

  • AnonEMouse

    The one IMPORTANT update is the ability to move apps to the SD card.

  • jose M

    I update my galaxy s4 i337 and now I can move apps to sd.yeea

  • marina

    Theres a new smart pause toggle in the notifications bar. A new camera firmware. A little more free space. New icons in settings. Also, a semi-transparent status bar

  • El papa

    Updated this afternoon. Only visible change sofar was when I tried to use the camaraderie, the screen whene blach for a few seconds and a message flashed to wait while the camera firmware was updated.

  • Joe

    Kills your root. :/

  • John Martin

    MF3 patches/locks your bootloader (no more custom recovery), kills root, and blows a qfuse so that you can’t downgrade. Happy updating!

  • master

    My Galaxy S4 from AT&T doesn’t update android 4.3 helpme i have root how can i update please