[17/DEC/21] BUL6 2nd DECEMBER update

This thread is now for information purposes only.

Only 10 days after their December Android Security patch update, BUL1, Samsung began rolling out their 4th Android 12 release for the S21 series of international devices.

However, as it turns out, this release was short lived and only available for a handful of countries and has since been withdrawn so that Samsung, in conjunction with Google, can fix some Google Play Store issues. (N.B. I have never encountered any Google Play Store issues on either the Beta or Stable Android 12 releases)

Initially, as always, this was a staged rollout to the non-carrier branded, stock Samsung CSC codes first.

The Galaxy S21 international devices that received this update were

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

This latest release replaces the previous G99*BXXS3BUL1 build on the international devices.


  • Device security improved
  • ​Bugfixes

System information

The update = G99*BXXS3BUL6

Download = 213.20MB (TBC)

Build date =14 December 2021

Release date = 17 December 2021

Camera version = (no change)

One UI version = 4.0

Android Security patch = 01 December 2021

This is the 23rd stable update for the Exynos model in 326 days. Average = 1 update every 14 days.

TOP TIP: Wipe the phone’s cache partition and use the Galaxy App Booster after updating.

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