Samsung is now expanding One UI/Android 9.0 Pie rollout to the Galaxy Note 9 in more countries. Samsung is now rolling out the stable version of its One UI (Android 9.0 Pie) to the Galaxy Note 9 Beta users in India. It also brings the January 2019 security patch.
The software version of this update is N960FXXU2CSA2. The size of the update is 131.32 MB.
You can check for the update by heading into the Settings > Software update > Download updates manually.