Download One UI 4 Android 12 directly from Samsung servers

Samsung just recently concluded the One UI 4 beta program for the flagship Galaxy S21 series. The Galaxy S21, S21+, S21 FE, and the S21 Ultra are now receiving their first stable One UI 4 firmware update based on Android 12. As we reported earlier today, Samsung unveiled the official One UI 4 rollout schedule; wherein the Galaxy S21 rollout was listed for as soon as November 2021. Here, download and install the latest stable One UI 4 / Android 12 firmware update directly from Samsung servers.

OneUI 4.0 for the Galaxy S21 series comes with firmware build number G99xBXXU3BUK for the global Exynos variants. As the US Snapdragon S21 variants depend very much on the network carriers such as T-Mobile and Verizon, Android 12 update in the United States will come later this year.

Samsung, in a press release, also unveiled what’s new with OneUI 4 for the Galaxy S21 series; basically acknowledging the Android 12 rollout.

What’s new with One UI 4 Update?

Your Galaxy, Your Way

One UI 4 enables you to create a customized mobile experience to meet your unique needs and express your individuality. With a whole host of new Color Palettes to choose from, you can alter the look and feel of everything from your home screen to icons, menu, button and background. And with reimagined widgets that offer even deeper customization, it’s never been easier to put your own personal stamp on your smartphone experience. You can even more effortlessly express yourself with a wider variety of emoji features, GIFs and stickers available directly from your keyboard.


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Protect What Matters Most

There’s no privacy without strong security. That’s why, with One UI 4, Samsung is bringing the latest privacy and security features, so you can choose exactly what you want to share or keep private. From alerting you to when an app is attempting to access your camera or microphone, to a new privacy dashboard that brings all your settings and controls into one convenient place, with One UI 4, monitoring and controlling your privacy settings is simple.


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Connecting You to an Extended Ecosystem

One UI 4 helps you to get the most out of Samsung’s incredible extended ecosystem of devices and third-party apps, unlocking a more powerful mobile experience.


Samsung’s partnerships with other industry-leaders, like Google, ensure seamless experience when using your favorite third-party apps and services. This means you can enjoy apps like Google Duo, which provides high-quality video calls with friends and family.


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And whether you’re using a Galaxy Z Series, Galaxy Watch or Galaxy Tab, you’ll get the uniformed look and feel across your devices, and will be able to seamlessly sync them.


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One UI 4 will be available on the Galaxy S21 series starting November 15th and will soon become available on previous Galaxy S and Note series as well as Galaxy Z series, A series and tablets.1 This announcement comes alongside a new software update for the Galaxy Watch series2 that, starting today, enables users to enjoy enhanced health features and new watch faces.

One UI 4 Features & Changelog

Download One UI 4 firmware for Samsung Galaxy S21 series directly from Samsung Servers

The easiest way to download One UI 4 for Galaxy S21, S21+, and S21 Ultra is by visiting settings > system update > download updates manually. You can also download the full stock One UI 3.0 firmware updates using SamFirm tool or the Firja Tool and install via Odin Flashtool.

You can use the SamFirm (Samsung Firmware Downloader) tool and the newly added Frija (also a Samsung Software Downloader) in order to download the full stock firmware directly from Samsung Severs.

  • First, download and extract the latest SamFirm tool or the Frija Samsung Firmware Downloader.
  • Go to About Phone under Settings on your S10 device and note down the model number like (SM-G991B) for Galaxy S21. Refer the table below.
  • Find the CSC code for your Galaxy S21 phone from here. Also known as a region or product code. In this case, we are using DBTfor Germany and Android 12.
  • Input the model number and region code.
  • Select or check the Auto box.
  • Also, check decrypt automatically box.
  • Hit check updates option.
  • Once the details are shown, hit the download button.
How to Download One UI 4 firmware using Firja Samsung firmware downloader series directly from Samsung Servers

Here is a list of Galaxy S21 series model numbers:

Galaxy S21 FE 5G (SM-G9900)
Galaxy S21 FE (SM-G990B)
Galaxy S21 FE (SM-G990N)
Galaxy S21 FE (SM-G990U)
Galaxy S21 FE (SM-G990U1)
Galaxy S21 FE (SM-G990W)
Galaxy S21 (SM-G9910)
Galaxy S21 (SM-G991B)
Galaxy S21 (SM-G991N)
Galaxy S21 (SM-G991U)

Galaxy S21+ (SM-G9960)
Galaxy S21+ (SM-G996B)
Galaxy S21+ (SM-G996N)
Galaxy S21+ (SM-G996U)
Galaxy S21+ (SM-G996U1)
Galaxy S21+ (SM-G996W)

Galaxy S21 Ultra (SM-G9980)
Galaxy S21 Ultra (SM-G998B)
Galaxy S21 Ultra (SM-G998N)
Galaxy S21 Ultra (SM-G998U)
Galaxy S21 Ultra (SM-G998U1)
Galaxy S21 Ultra (SM-G998W)

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