If you are an advanced user and want Android 8 regardless of the risks (voided warranty, potential bugs, or "bricking" the phone), you must use a Custom ROM Prerequisites

Yes and No.

✅ You want modern features, better notifications, and long-term app compatibility. ❌ No if: You rely on Xposed Framework (not compatible) or need extreme battery life (older Android 6 sometimes lasts longer on F3).

Because there is no official Android 8 software for this model, any "Android 8 download" you find online is either: Custom ROMs:

Disclaimer: This guide is for educational purposes. Modifying your phone can brick it. Proceed at your own risk.

The is a phantom update for most users. Oppo abandoned the device at Nougat. While unofficial Android 8 exists through LineageOS, it is unstable and breaks core features like the dual-selfie camera that defined the F3.