Simone.Q , via OnePlus 9 Pro , Jan 23, 2022 : In December 2021 will updated oos 12 with Oxygen updater version le2123 eu c38 But now no get any update in setting. Anyone geted? Location Italy
Aaron2017 , Jan 23, 2022 : The C44 update has been released officially for EU too but it is a staged roll out so it can take a while to fully roll out to everyone. If you don't want to wait for the OTA you can always download and install it yourself. You can use the main thread for all things about the update https://forums.oneplus.com/threads/oxygenos-12-c-44-update-for-oneplus-9-and-oneplus-9-pro.1537780/
Swejuggalo , Jan 24, 2022 : Since C38 never really was officially relesed you may need to do a local update with this apk. https://oxygenos.oneplus.net/OPLocalUpdate_For_Android12.apk