Send the following on WhatsApp
Continue to ChatDownload and Install Android 8.0 Oreo on Asus ZenFone 4 https://www.stechguide.com/install-android-8-0-oreo-on-asus-zenfone-4/
Download and Install Android 8.0 Oreo on Asus ZenFone 4 https://www.stechguide.com/install-android-8-0-oreo-on-asus-zenfone-4/