Having tested the official update on an OPPO F3 (4GB RAM, MediaTek MT6750T), here are real-world metrics:
Ensure all important photos, contacts, and files are backed up to a cloud service or external storage to prevent data loss. oppo f3 update 7.0 download
Ensure your Oppo F3 has at least . If the phone shuts down during the installation process due to low battery, it could render the device unusable (hard bricked). Having tested the official update on an OPPO