OnePlus officially rolled out the OxygenOS 11 Iterative Update for OnePlus 8T with the device getting the OxygenOS 11.0.12.12 along with the December 2021 Security Patch this update also fixes the issues in the UI Display in setting interface, with a fix in Google Assistant and GPay in the Setup Wizard and the low probability issue of WhatsApp crash.
OnePlus 8T was released in October 2020 with an Android 11 out-of-the-box.
This update was released on 28th December 2021, shortly after the OnePlus 8 & 8 Pro had already received the same update just a day before.
Previously it was running on October 2021 Security Patch, which had brought Files by Google app along with the security patch, that’s a bit of a new thing in the OTA build, where new apps are getting bundled through a software update.
Previous Post: Oneplus 8T:OxygenOS 11.0.11.11 with October 2021 Security Patch

Source>> Oneplus community
| Android OS | Update | Release date/status | Estimated time |
| Android 11 | Out-of-the-box | October 2020 | Nil |
| Android 12 | First update | Eligible | - |
| Android 13 | Second update | Eligible | Unconfirmed |
| Android 14 | Third update | Eligible | Unconfirmed |
The OnePlus 8T will receive three years of major OS updates and four years of Security updates.
Check your device>>> OnePlus Android 12 update list
The OnePlus 8T Software Update with OxygenOS 11.0.12.12 is currently rolling out in Europe and North America and OxygenOS 11.0.11.11 in India.
Once the update is available on your device, you can head over to Settings >> About Phone >> Software Update section to update your OnePlus device with the latest update.
For more Oneplus Android updates please download our Android App – Available on the Play Store