The Oppo F3 Go to product viewer dialog for this item. officially launched with Android 6.0 (Marshmallow) and ColorOS 3.0. While many users look for an official Android 8.0 (Oreo) update, Oppo did not release a formal Oreo upgrade for this specific model.
Official Downloads: You can check for any final maintenance releases by visiting the OPPO Support Global ROM or OPPO India ROM pages and searching for your specific model (CPH1609). How to Check for Updates Oppo F3 Update 8.0 Download
Have you successfully installed a custom Android 8.0 ROM on your Oppo F3? Share your experience in the comments below (but remember, we don’t condone untested downloads). Stay safe and keep your data backed up! The Oppo F3 Go to product viewer dialog for this item
Before you risk bricking your phone, consider these alternatives: Official Oppo F3 Android 8
You will not find an official Oppo F3 Update 8.0 via OTA (Over-the-Air) or from Oppo’s official website. Any website claiming to offer an "official signed Oreo ROM" for the Oppo F3 is likely fake or malicious.