Firmware updates are regularly checked automatically by the Oppo-Smartphone and displayed if necessary. It is also possible to search for new software updates for ColorOS manually. All you need to do is call up the menu item Software Update .

Android 11 | ColorOS 11.0
Step 1: Tap on  Settings
Step 2: Tap on  Software update
  1. Tap on Settings
  2. Tap on Software update

Oppo Instructions