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 10 | ColorOS 7.0
Step 1:  Open the  Settings
Step 2:  Tap on  Software update
  1. Open the Settings
  2. Tap on Software update

Oppo Instructions