OnePlus 8, OnePlus 8 Pro, and OnePlus 8T are currently in OxygenOS 12 closed beta program. The OnePlus 8 series is also running the December 2021 security patch.OnePlus has released the stable Android 12-based OxygenOS 12 update for the OnePlus 9 series users. The company has also started to roll out the latest Stable build of OxygenOS 12 C.44 for the Oneplus 9 Series.
In past, Oneplus rolled out the first open beta update of ColorOS 12 which was an incremental update over Close beta 6 & the update size was only 9Mb. Now a new update is being pushed by Oneplus based on ColorOS 12 for Oneplus 8, 8pro & 8T which bring improvement over the previous update and bug fix related to Camera, System & few applications.

Prerequisite to Install ColorsOS 12 Oneplus 8 Series
- Take a backup of your data
- Must be running OxygenOS 11
- Download full Zip of ColorOS 12 open beta 2 from the below links
- Installation Guide of ColorOS 12 can be found here: Installation Guide
Download links of ColorOS 12 Open beta 2 C.11& C.15
- Oneplus 8 ColorOS 12 Open Beta 2 C.11: Download Full zip // Gdrive faster download
- Oneplus 8 pro-ColorOS 12 Open Beta 2 C.11: Download Full zip // Gdrive faster download
- Oneplus 8T ColorOS 12 Open Beta 2 C.15: Download Full zip // Gdrive faster download