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EFI

Firmware on the change: 2 In with the new

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.

March 14, 2022 Macs, Technology

Firmware on the change: 1 Out with the old

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.

March 13, 2022 Macs, Technology

SilentKnight version 1.17 now available

T T Read More

Improved reporting of firmware, Gatekeeper, and clearer documentation are the main improvements.

November 1, 2021 Macs, Technology, Updates

Which firmware should your Mac be using? (version 6)

This article lists the firmware versions of Macs which have been successfully updated to run macOS 12.3.1. Apple […]

September 2, 2021 Macs, Technology

Why is firmware so troubled?

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.

March 8, 2021 Macs, Technology

Could this fix firmware updating in the iMac Retina 5K 27-inch Late 2015 (iMac17,1)?

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?

February 6, 2021 Macs, Technology

Which firmware should your Mac be using? (version 5)

macOS 11.6.5 Big Sur brings firmware updates for some supported models. This article lists the firmware versions of […]

November 16, 2020 Macs, Technology

Firmware and the iMac Retina 5K 27-inch Late 2015 (iMac17,1): a hardware fault?

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.

September 23, 2020 Macs, Technology

Firmware fundamentals

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.

September 15, 2020 Macs, Technology

Achieving the CIS Apple macOS 10.15 Benchmark

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.

September 4, 2020 Macs, Technology

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