All the latest software updates in one place

Welcome to the Samsung Galaxy S21 Update Hub. Here you will find the latest information on updates for the Samsung Galaxy S21, Galaxy S21 Plus and Galaxy S21 Ultra. We’ll keep you informed of the latest software versions for each device and notify you when a new update is released. Samsung usually releases updates for the entire series, but this may vary depending on the variant and provider.

All three of the Galaxy S21 series phones were launched with Android 11 and Samsung’s One UI 3.1 skin. Samsung will offer three major Android operating system updates for the Galaxy S21, S21 Plus and S21 Ultra. The company also guarantees four years of security updates for all devices.

  • Current stable version: Android 11
  • When will the Galaxy S21, S21 Plus and S21 Ultra get Android 12? December 2021 (estimated)

Latest Samsung Galaxy S21, S21 Plus and S21 Ultra update

September 28, 2021: We’re still in September, but Samsung apparently released the October 2021 security patch. According to SamMobile, the new update (firmware version G991BXXU3AUIE) is currently affecting Germany and the Philippines. We assume that it will come to other markets in a few days or weeks.

To check if the update is available for your device, go to settings > software update and tap Download and install.

Previous updates of the Samsung Galaxy S21 series

  • September 6, 2021: Samsung released the Android security patch for the Galaxy S21 series in September 2021 (firmware version G99xU1UES4AUH9). It first landed on unlocked models in Europe and the US. There doesn’t seem to be any new features or improvements with the rollout.
  • 08/25/2021: Samsung has moved One UI 3.1.1 to the Galaxy S21 series (via Tizen Help). The rollout is taking place in the USA for T-Mobile variants and also in Canada for selected models. One UI 3.1.1 was introduced with Samsung’s new foldable phones: the Galaxy Z Fold 3 and Galaxy Z Flip 3. It brings a handful of new features and improvements. You can see the full list of changes here. It also includes the August 2021 security patch, but Galaxy S21 phones should already have received the one from the previous update this month.
  • 08/10/2021: Firmware version G99XU1UEU4AUGE is introduced. There’s no word on what this update might be in, but expect the usual help from fixes and security improvements. According to Verizon’s patch notes for the S21 Ultra, the firmware also offers “performance enhancements.”
  • July 13, 2021: Firmware version G99xBXXU3AUG4 brought Android auto fixes for the S21 series.
  • June 22, 2021: Samsung Galaxy S21 series users in the US have received the firmware version G99xUSQU4AUF5 (h / t SamMobile). The update brought improved effects in portrait mode, fixed overheating problems and reduced the delay when zooming. The June 2021 Android security patch was also included.
  • June 17, 2021: Samsung has rolled out a new update with the firmware version G99xxXXU3AUF6 in South Korea, Germany and Thailand (h / t SamMobile). The update fixed the camera lag issues, fixed overheating issues, and added improved effects in portrait mode.
  • May 28, 2021: Samsung has started rolling out June security patches for the Galaxy S21 series (h / t SamMobile) in some countries. The update contains the firmware versions G991NKSU3AUE8, G996NKSU3AUE8 and G998NKSU3AUE8 for the Galaxy S21, Galaxy S21 Plus and Galaxy S21 Ultra.
  • 04/27/2021: Samsung has rolled out the firmware version G99xBXXU3AUDA (h / t SamMobile) on the Galaxy S21, S21 Plus and S21 Ultra with a full download size of 1.2 GB. It brought the May 2021 security patch to phones and included improvements to both the camera and the Quick Share feature.

Which Samsung Galaxy S21 update are you running? Let us know in the comments. Even if you’ve spotted an OTA that we don’t have, tip us!

If you’re looking for another update, be sure to check out our Android 11 Update Tracker.


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