Ten years ago, a firmware worm that could have inserted malware into Mac boot flash storage was demonstrated, and shortly afterwards many Macs were found to be running outdated firmware. We’ve come a long way since.
iBoot
Listing for all compatible Intel Macs with T2 chips, and all Apple silicon Macs.
Explains the sequence of events from Boot ROM to FileVault login, what storage is accessible at different times, and where the code is.
How to check your Mac is booting in Full Security, and how to read its log to verify all the key steps involved in that process.
Gives the latest firmware versions for all Macs running the most recent supported version of macOS, and which are expected to change in the future.
A round-up of firmware updates across 15.4, 14.7.5 and 13.7.5, prospects for future macOS and firmware updates, and problems updating to 15.4.
Did you spot the change that didn’t take place as expected in the 15.2 update this week? It marks the end of the Intel era for Macs.
How Intel Macs without a T2 chip boot, and how Secure Boot works in those with T2 or Apple silicon chips. How the latter can still enjoy Secure Boot when starting up from an external disk.
Full details of firmware installed by macOS Sequoia on supported Macs, including on remaining Intel model without a T2 chip, T2 and Apple silicon Macs.
This article lists the firmware versions of Macs that have been successfully upgraded to run macOS 14.8.2 Sonoma. […]
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