Here is an honest verdict. The OPPO F3 is an older device with 4GB RAM and a MediaTek chipset.
If you are still on Android 6.0, you can update to the final official version (Android 7) using these methods: oppo f3 android 8 update download full
For official firmware downloads and system tools, you can visit the OPPO Global Software Upgrade page or HardReset.info , which maintains a database of stock firmware for various models. Here is an honest verdict
Based on your query "oppo f3 android 8 update download full" , you are likely looking for the (specifically ColorOS 5.2). Since the Oppo F3 is a legacy device, the update is not available via OTA anymore in most regions. Based on your query "oppo f3 android 8
: OPPO did not release an official Oreo migration for this specific model. Manual Update Options