For older Intel-based Macs (pre-2011 models), the firmware password was stored in a way that could often be manipulated via software. Several open-source tools and scripts exist that can read the firmware settings and calculate a default password based on the machine's hardware hash.
: If you have proof of ownership, Apple can provide a one-time challenge-response file. By pressing Shift-Control-Option-Command-S on the lock screen, you'll see a unique hash to give to an Apple support agent. mac efi firmware password removal tool
For these machines, there is no software "hack" to remove a firmware lock, and desoldering a chip is impossible. The only avenue for removal is Apple Configurator (DFU mode restore) or, if that fails, replacement of the entire logic board. This shift has effectively killed the market for generic EFI removal tools on newer devices. For older Intel-based Macs (pre-2011 models), the firmware
With M1 and later Macs, the EFI password concept has merged into (iCloud-linked) and recoveryOS passwords. There’s no standalone EFI password tool for these machines at all. Removing it without Apple’s help is currently impossible for the public. This shift has effectively killed the market for
The only officially supported way to remove a firmware password without knowing it is to visit an Apple Store or Authorized Service Provider .