Chosen Solution
This 15" MacBook Pro mid-2014 was DELIBERATELY bricked by my son’s disgruntled girlfriend putting a random, and forgotten, BIOS password on it. We don’t have proof of purchase and cannot get it. Are there any other fixes? I’ve heard that there’s a hardware fix?
The only way is to remove the firmware chip and re-burn it with a clean image and remount it. This is quite advanced as you need good micro soldering skills and access to a ROM burner and a clean image file and have the skills to edit the image with the systems S/N otherwise any software which is keyed to it will fail. It might be cheaper getting a replacement system (used - the same model) then you can just swap over the SSD drive and be back in business (that is if the files are intact and not encrypted.
