Here is a blog post structure to help you or your readers recover a dead Oppo F11.
A: No. OPPO uses MediaTek's BROM mode, not Qualcomm's EDL. You need the Bypass Utility for newer security. oppo f11 dead after flash
Hook an oscilloscope to the PMIC (MT6357) VSYS or VIO18 rail. You will see a brief 200ms power-on ramp, then a hard cut. This differs from a shorted component or dead battery. Here is a blog post structure to help
If you want, I can:
Fixing a dead Oppo F11 typically involves specialized software tools and specific connection methods: oppo f11 dead after flash