[Update Global] Download Oxygen OS 12.1 C.16 HotFix OTA for OnePlus 8, 8 Pro, 8T, and OnePlus 9R

Last month, OnePlus released the most anticipated stable OxygenOS 12 firmware update for the OnePlus 8, 8 Pro, 8T, and the OnePlus 9R based on Android 12. Soon after, the European variants received the same update for the OnePlus 8 series featuring C.15 software build with March 2022 security patches.

However, that wasn’t enough. According to several user reports, the newest Oxygen OS 12 C.15 still wasn’t quite stable. Users who updated are complaining about all sorts of bugs related to battery drain; as seen in our OnePlus 8 downgrade tutorial.

Today, OnePlus released a new Oxygen OS 12-based C.16 hotfix update addressing this exact issue. According to the changelog, C.16 optimized the power consumption in some scenarios and improved battery life performance.

While it is advised to immediately update to Android 12 C.16 OTA, it is only available for the European variants as of now. For the global or Indian variants, you may need to wait and check the download section for the full OTA download links.

The previous C.15 version increased charging speed, enhanced calling quality, and addresses a Face Unlock glitch. The OTA also brought the Android security patch level to March 2022. Check out the complete changelog from below.

OxygenOS 12 C.16 Features and Changelog

• System
  • [Optimized] the power consumption in some scenarios, improved battery life performance

C.15 chnagelog

•  System
  • [Optimized] the charging speed in some scenarios
  • [Optimized] the communication stability when making a phone call
  • [Fixed] the occasional issue that unable to use face unlock
  • [Fixed] the issue of abnormal display when enabling applications in some scenarios
  • [Improved] system stability
• Camera
  • [Fixed] the abnormal notification issue of “Camera is running”

Original Oxygen OS 12 update changelog

• System
  • Optimized desktop icons with improved textures, by using a design inspired by brand-new materials and uniting lights and layers
  • Fixed the issue that background applications are abnormally closed in specific scenarios
  • Fixed the issue with lens permissions when using third party camera applications
  • Fixed the issue of screen cannot respond when receiving notifications
• Dark mode
  • Dark mode now supports three adjustable levels, bringing a more personalized and comfortable user experience
• Shelf
  • New additional style options for Cards, making data contents more visual and easier to read
  • Newly added Earphone Control Card with Bluetooth earphone one-click adjustment
  • Newly added access to OnePlus Scout in Shelf, allowing you to search multiple contents on your phone, including Apps, Settings, Media Data, etc
  • Newly added OnePlus Watch Card in Shelf, to easily glance at your health stats
• Work Life Balance
  • Work Life Balance feature is now available to all users, allowing you to effortlessly switch between Work and Life mode via quick settings
  • WLB 2.0 now supports automatic Work/Life mode switching, based on specific locations, Wi-Fi network, and time, also bringing customized App notification profiles according to the personalization
• Gallery
  • Gallery now allows you to switch between different layouts with a two-finger pinch gesture, intelligently recognizing the best-quality pictures, and cropping the thumbnail based on the content, making the gallery layout more pleasing
• Canvas AOD
  • Canvas AOD brings you new diverse styles of lines and colors, for a more personalized lock screen experience with inspiring visuals
  • Newly added multiple brushes and strokes and support for color adjustment
  • Optimized software algorithm and improved face recognition to better identify the features and skin color of different figures
• Network
  • Fixed the issue that unable to automatically connect to Wi-Fi
• Bluetooth
  • Fixed the issue that wireless earphones cannot play sound when connecting Bluetooth in specific scenarios

Known issues

1. The clock displays smaller. You can try to adjust it manually or delete it and add the clock widget again
2. Phone application may be replaced by Contacts in Dock. You can adjust it manually to move Phone application in the right place

Download OxygenOS 12 C.16 for OnePlus 8 Series and OnePlus 9R with Android 12

The OnePlus 8, OnePlus 8 Pro, OnePlus 8T, and OnePlus 9R are all receiving the new C.16 OTA update featuring Android 12. It weighs just 78.11 MB in size. So it’s a minor but critical hotfix software update.

Here you can download and install OxygenOS 12 C.16 full stock firmware zips as well as incremental OTA updates. The OTA weighs only 78 MB in size. However, the following are full packages weighing ~3 GB in size. Install via local upgrade method.

The following packages are intended for the model numbers as listed below:

• Packages with build tag IN11DA are intended for the following variant:
  IN2021: India
• Packages with build tag IN11AA are intended for the following variant:
  IN2025: Global
• Packages with build tag IN11BA are intended for the following variant:
  IN2023: EU

Note: As of writing this article, only the OTA update zips are available. For full stock firmware, stay tuned!

First, make sure your device is on the

• Download Stable Oxygen OS 12 for OnePlus 8 and 8 Pro, and 8T [Updated Full OTA]
• Incremental OTA from C.11 to C.15 OTA update
• Stable Oxygen OS 12 for European (EU) OnePlus 8 series

You may also like to see:

• How to Downgrade OnePlus 8, 8Pro, 8T to Stable Android 11 (Without Losing Data)

Download Oxygen OS 12 C.16 for OnePlus 8

• Europe (IN2013_11.C.16):
  • Full OTA
  • Incremental from C.15 to C.16
• India (IN2011_11.C.16):
  • Full OTA
  • Incremental from C.15

• Global (IN2015_11_C.11):
  • Full
  • Increment (IN2015_11_C.11)

Download Oxygen OS 12 C.15 for OnePlus 8 Pro

• Europe (IN2023_11.C.16):
  • Full OTA
  • Incremental from C.15 to C.16
• India (IN2021_11.C.16):
  • Full OTA
  • Incremental from C.15

• Global (IN2025_11_C.11):
  • Full
  • Increment (IN2025_11_C.11)

Download Oxygen OS 12 C.15 for OnePlus 8T

• Europe (KB2003_11.C.16):
  • Full OTA
  • Incremental from C.15 to C.16
• India (KB2001_11.C.16):
  • Full OTA
  • Incremental from C.15

• Global (KB2005_11_C.11):
  • Full
  • Increment (KB2005_11_C.11)

Bonus Download Oxygen OS 12 C.16 for OnePlus 9R

• OnePlus 9R
  • India (LE2101_11.C.16):
  • Full OTA
  • Incremental from C.15 to C.16

How to install Oxygen OS 12 full stock firmware onto OnePlus 8 series?

Most of the above-listed updates are incremental OTA updates. Meaning, you need to be on the previous Oxygen OS 11 firmware and install the OTA zip via stock recovery or via adb commands.

Visit this tutorial here for incremental OTA: How to install OTA updates on any Android device?

Alternatively, for full updates, do the following:

MP version – Stable official version
DP version – Developer Preview version
OBT Version – Open Beta version

MP and OBT to DP upgrade guide—via Local OTA Update
Note: This upgrade method will erase all the contents of the phone, please be sure to backup first.

1. Download the latest ROM upgrade zip package from the specified server.
2. Copy the ROM upgrade package to the phone storage.
3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> Upgrade -> System upgrade completed to 100%.
4. After the upgrade is complete, click Restart.
5. Update successful.

Downgrade to Android 11 via rollback package on OnePlus 8 series

Tutorial: How to Downgrade OnePlus 8, 8Pro, 8T to Stable Android 11 (Without Losing Data) from Android 12