Oxygen OS 12 gets another tweak for the OnePlus 9 series, but some are left out

 Welcome to the OnePlus 9 series update hub. Here you’ll find the latest information on updates to the OnePlus 9, OnePlus 9 Pro, and OnePlus 9R. We’ll detail the current software versions for each device and alert you if there’s a new update rolling out. OnePlus usually pushes out Oxygen OS updates to the OnePlus 9 and 9 Pro, with the 9R receiving separate updates.

• Current stable version: Android 12
• When will the OnePlus 9 get Android 13? January 2023 
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  Latest OnePlus 9 and 9 Pro updates
  
  
  December 30, 2021: After the start-and-stop-and-restart of the original Oxygen OS 12 rollout for the OnePlus 9 series, there’s a new update rolling out now. Known as Oxygen OS 12 C.40, the update focuses on fixing even more issues the previous update didn’t fix.
  
  
  
  
  This update, however, is only rolling out to global and Indian variants of the phones. European users are going to need to wait, it seems.
  
  
  
  
  
  
  See the official changelog below.
  System
  Fixed the issue of system upgrade failure in specific scenarios
  Network
  Fixed the issue of being unable to access the 5G network in some scenarios
  
  
  As usual, the update will roll out incrementally. To check if an update is available, head to Settings > System > System updates on your device.
  Previous OnePlus 9 and 9 Pro updates
  December 6, 2021: After a months-long beta program, the OnePlus 9 and OnePlus 9 Pro started getting a stable version of
  
  
  Oxygen OS 12, based on Android 12. However, due to intensely negative feedback to the update’s many bugs, OnePlus pulled it. The update restarted a week later.
  November 25, 2021: Oxygen OS 11.2.10.10 rolled out to the OnePlus 9 and OnePlus 9 Pro. The update brought the November security patch and a few bug fixes but no significant changes.
  September 17, 2021: OnePlus is rolling out a new Oxygen OS update (11.2.9.9) to the OnePlus 9 and 9 Pro. The update adds the September 2021 security patch and also brings the brand new Hasselblad XPan camera mode. There is also a slew of camera-related tweaks and other miscellaneous bug fixes.
  July 29, 2021: OnePlus is rolling out Oxygen OS 11.2.4.4 to the OnePlus 9R. The update adds the July security patch to the phone and also brings the Bitmoji AOD feature that lets users place an avatar on their always-on display screen which changes based on activity and other factors. Fixes for “known issues” are bundled in the update alongside the updated GMS package. July 19, 2021: OnePlus rolled out Oxygen OS 11.2.8.8 to the OnePlus 9 and OnePlus 9 Pro. It added one big feature for Ambient Display users — Bitmoji AOD. This lets users place an avatar on their always-on display screen which changes based on activity and other factors. The update also Fixed some “known issues” and added the July 2021 Android security patch.

June 6, 2021: The OnePlus 9 and 9 Pro gained Oxygen OS 11.2.7.7 which brought power consumption improvements, and camera tweaks, including an HDR option for video recording on the OnePlus 9 Pro.