Oppo A9 2020 Coloros 12 Update Link

Subject: OPPO A9 2020: ColorOS 12 Update - Everything You Need to Know

Verdict:

If you currently own this phone, it is a reliable workhorse for media and long battery life. However, because it is stuck on an older version of Android, you may soon face app compatibility issues or miss out on critical security updates.

Critical First Truth: There is No Official ColorOS 12 Update

6. Recommendations for Oppo A9 2020 Users

• RAM Management: ColorOS 12 is heavier than ColorOS 7. If you have the 4GB RAM variant of the A9 2020, you will likely notice apps reloading more frequently. The 8GB RAM variant handles the update much better.
• Lag & Stutter: The update introduces a "heavy" skin. Scrolling through heavy apps like Facebook or Instagram can result in dropped frames. The "Game Space" feature helps a little, but the phone definitely feels more sluggish compared to the lighter ColorOS 7.
• Storage Consumption: The update takes up a significant chunk of internal storage. If you have the 128GB model, you are fine, but 64GB users might feel the squeeze.