ColorOS - Calling all OPPO Reno2 Z users based in India 🇮🇳 - you may now upgrade your phones to the #OPPOColorOS11 Beta Version based on #Android11! To apply for this update,
Oppo Reno 2 F Android 11 Official Update - YouTube
OPPO Reno2 Z ColorOS 11 (Android 11) beta registrations go live in India - Gizmochina
Oppo Reno2 Android 11 Beta Program goes Live (ColorOS 11)