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firmware

SilentKnight now checks Studio Display firmware

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An essential update for anyone with an Apple Studio Display, as it now checks their firmware and tells you when it’s out of date, even on multiple displays.

April 5, 2022 Macs, Technology, Updates

Explainer: macOS updaters

How macOS updaters have changed over the last decade, and why they’re far more reliable, but you can’t download a standalone updater any more.

March 19, 2022 Macs, Technology

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

Can’t upgrade to Monterey? Try these

Upgrading to Monterey is simple for the great majority of users. But what can you do if you can’t get it to install? Here are plenty of options.

February 17, 2022 Macs, Technology

Have Monterey updates got smaller?

Going from 11.0 to 11.6 required over 50 GB of updates for an M1 Mac. Has Monterey tamed the beast, and reduced them? And which Macs will be supported by macOS 13?

February 2, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 3 XNU, the kernel

Once the kernel takes over from iBoot, there’s a lot of hardware to get running before the SSV can be properly validation, and kernel extensions loaded.

January 6, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 2 LLB and iBoot

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Sometimes known as iBoot1 and iBoot2, they start work with the LocalPolicy for the intended boot volume, validating its vital components.

January 5, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 1 Hardware

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Understanding each of the four stages in the Secure Booting of an M1 Mac. These are summarised in diagram available here.

January 4, 2022 Macs, Technology

How M1 Macs can run old firmware when Intel Macs can’t

There’s a fundamental difference in the way that Intel and M1 Macs store and load their ‘firmware’, which enables the M1 Mac to load and run difference versions of iBoot.

December 30, 2021 Macs, Technology

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