[12/JUL/21] AUG4 Global, Exynos, JULY Android Security patch + camera update

This latest update is the 14th for the Global, Exynos, S21 series and is currently being rolled out by Samsung and is a later, July, build than the current U.S. Snapdragon update AUFD which has a June build date.

This update is for camera, general bugfixes and July security patch.

Initially, as always, this is rolling out to the non-carrier branded, stock Samsung CSC codes first.

The Galaxy S21 Global, Exynos, devices that will receive this update are…

  • S21 5G model SM-G991B
  • S21+ 5G model SM-G996B
  • S21 Ultra 5G model SM-G998B

This latest release replaces the previous G99*BXXU3AUF6 build.

It is a FOTA, (Firmware Over The Air), update and you can check… Settings > Software update… to see if it is available for you. Alternatively, you can connect to the Samsung PC suite, Smart Switch and check via that.


  • Performance of camera has been improved
  • The security of your device has been improved

The update = G99*BXXU3AUG4

Download = 477.94MB (TBC)

Build date = 06 July 2021

Release date = 12 July 2021

Camera version =

One UI version = 3.1

Android Security patch = 01 July 2021

This is the 14th stable update in 168 days. Average = 1 update every 12 days.

(N.B. This post will be updated as more information becomes available.

AUG4 System information

Camera version

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