realmiupdates.com
[C.45] Oppo F15 December 2020 Update Released Based On ColorOS 7.1 Brings December 2020 Android Security Patch, Optimized System Performance & More [Download Link] - Realmi Updates
Oppo F15 December 2020 Update has been Released In India Based On ColorOS 7.1 Android 10 With CPH2001PUEX_11_C.45 Brings November Android Security Patch & More