[Download] OnePlus 9/9 Pro gets OxygenOS 12.1 C.66 update with October 2022 security patch

The latest OxygenOS 12.1 C.66 update for the OnePlus 9 and OnePlus 9 Pro starts rolling out via OTA. The update is currently rolled out for Indian users and brings the October security patch to enhance system security.

The OxygenOS 12.1 C.66 for OnePlus 9/9 Pro is rolling out via OTA and carries the firmware version LE2113_11.C.66 to the OnePlus 9, while the OnePlus 9 Pro brings the firmware version LE2121_11.C.66. If you have not yet received the update, you can navigate to Settings > System > System updates to manually check if the update is already available on your phone.

The update is being rolled out in a phased manner and will reach you soon. The update will be randomly pushed out to a limited number of users today and will have a broader rollout in a few days after making sure there are no critical bugs. If no critical bugs are found, the full rollout will be completed in the upcoming days.


According to the changelog, the update brings the September security patch. Here are the complete changelogs of the OnePlus 9/9 Pro OxygenOS 12.1 C.66 update.


  • Integrates the October 2022 Android security patch to enhance system security.

Download OxygenOS 12.1 C.66 for the OnePlus 9/9 Pro

How to Get OnePlus 9/9 Pro OxygenOS 12.1 C.66 update

As mentioned, the update is rolling out in a phased method. Hence it will take some days to cover all the devices at once. You will receive a software update notification or you can navigate to Settings >> Software update to check if it is already available.

  • Open Phone Settings.
  • Scroll Down and tap on System and Updates.
  • Click on Software update and tap Check for Updates.
  • If the new update is available, simply click on Download and Install.

To manually update the OnePlus 9/9 Pro to the latest version, you can head over to OnePlus’s official website. We also provide you with the download link as soon as it’s available. You should back up your device and make sure you have sufficient storage before installing the update.


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Sumit is a gadget and tech enthusiast who writes about Android updates and tech guides and enjoys solving all of your tech problems.

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