If you see a "ColorOS 12 download link" for the A9 2020, it is likely malware, a theme pack, or a fake version number spoof.
Inspired by stock Android 12, ColorOS 12 included a privacy dashboard showing which apps accessed your location, camera, or mic in the last 24 hours. This required deeper kernel-level changes that OPPO chose not to backport to older chips. oppo a9 2020 coloros 12 update
Includes "Screen Translate" powered by Google Lens for real-time translation. If you see a "ColorOS 12 download link"
If you see websites claiming a ColorOS 12 download for the A9 2020, they are either Includes "Screen Translate" powered by Google Lens for
Software Lifecycle: Every smartphone has a defined software support window. For the A9 2020, that window closed after the stable release of ColorOS 11.1. Pushing a heavier OS like ColorOS 12 could actually degrade the user experience rather than improve it.