No. OPPO officially confirmed that the F5 would not receive Android 9 Pie. The Oreo 8.1 update was the final major OS upgrade.
If you need the original OTA update file (ZIP) for manual installation, search on ("OPPO F5 Oreo OTA") — official OPPO links are dead, but community mirrors may exist. oppo f5 android 80 oreo update
Enhanced built-in malware scanning for installed apps. If you need the original OTA update file
A compatible Google Apps (GApps) package if the custom ROM does not have Google Play Services integrated natively. 3. High-Level Installation Protocol Back up all internal storage data externally. This generated considerable hope among users.
In late 2017, technology media outlets like Nextren (Indonesia) listed the OPPO F5 among several OPPO models that were reportedly slated to receive the Oreo update, alongside the F3 Plus, R11, R11s, A77, and others. This generated considerable hope among users.