How to unlock an iMac 2011 using the CMIzapper Medusa. What to do if you lost your EFI PIN.
You can use the CMIzapper Medusa to unlock the EFI lock on all Macs with Intel CPU as long as it does NOT have a T2 chip.
The Medusa is a simple to use tool that allows you to read and write and modify the EFI (BIOS) ROM in a Mac.
Links to the products shown:
https://www.cmizapper.com/products/me...
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