How To Open Fastboot Mode On Oppo F11 -

If you need Fastboot specifically for development purposes (like flashing via a PC), you can try using ADB (Android Debug Bridge)

Press and hold the Volume Up button and the Power button simultaneously. How to Open Fastboot Mode on OPPO F11

This method is ideal if your physical buttons are damaged or if you are already performing development tasks. If you need Fastboot specifically for development purposes

When you see the OPPO logo appear, release the Power button but continue holding the Volume Up button. How to Open Fastboot Mode on OPPO F11