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Continue to ChatInstall Android 8.1 Oreo on Oppo R11S and R11S Plus (ColorOS 5.0) https://www.stechguide.com/install-android-8-1-oreo-on-oppo-r11s-and-r11s-plus/
Install Android 8.1 Oreo on Oppo R11S and R11S Plus (ColorOS 5.0) https://www.stechguide.com/install-android-8-1-oreo-on-oppo-r11s-and-r11s-plus/