In less than 5 years, Macs have gone from unsecured firmware and booting to a fully secure process to deliver, install and run firmware which can’t be exploited.
EFI
Since replacing Open Firmware in 2006, EFI firmware has undergone major change. Now only installed as part of a macOS install or update, here’s its story.
Improved reporting of firmware, Gatekeeper, and clearer documentation are the main improvements.
This article lists the firmware versions of Macs which have been successfully updated to run macOS 12.3.1. Apple […]
The last five years have seen great changes in Mac firmware security. As Intel Macs are replaced by Apple Silicon models, firmware may at last be simpler and more secure at last.
Many iMac17,1 computers are still stuck with firmware dating back to before macOS Catalina. Could this new approach enable them to install firmware updates again?
macOS 11.6.5 Big Sur brings firmware updates for some supported models. This article lists the firmware versions of […]
Many of this model have been unable to update to newer firmware versions. An appeal for users to report their firmware version and logic board ID.
Essential facts about the firmware in your Mac, how it’s updated, and which version you should be running. With links to more detailed articles.
If you’re working towards this benchmark (or those for earlier versions of macOS), or want to maintain systems to its requirements, I have something to help you.
The Eclectic Light Company 