For mid-2010 to 2017 Intel Macs, specialized hardware like the or EFI BIOS programmers (like the CH341A) can be used. These tools require you to open the Mac and either clip onto the EFI chip or plug into a specific debug port to reflash the firmware.
You’ll need to visit an Apple Authorized Service Provider or an Apple Store. unlock efi password top
How to Unlock EFI Passwords: A Comprehensive Guide to Regaining Control of Your Mac For mid-2010 to 2017 Intel Macs, specialized hardware