First added to Macs in the T1 chip, the Secure Enclave makes it far harder for an attacker to gain access to secrets like the FileVault encryption key.
Apple silicon
Why some report macOS updates as being more than 1 GB smaller than the figures given here. Don’t believe the size given by softwareupdate.
Although your Mac may be unable to boot into macOS, it might be able to start up in Recovery, or offer its internal SSD in Target Disk Mode.
Making it quicker and simpler to run a macOS VM: with Vimy all you need do is double-click its bundle, and the VM runs using its previous settings.
Provenance, condition, AppleCare, Activation Lock, and finally Handover – steps to ensure your money is well spent and you don’t get buyer’s remorse.
A new document type including individual VM settings, support for recovering IPSW files, 14 page Help book and full set of Tooltips.
Still very useful procedures for Intel Macs, resetting the SMC within a T2 chip is more complex. Used wisely they can resuscitate a failing Mac.
Is your Mac likely to receive firmware updates in future? How can you check whether its firmware is up to date? What happens in Sonoma?
Why do macOS updates keep updating firmware? Is it full of bugs or what? And just what does firmware do?
When should you put your Mac into DFU mode, hook it up to another Mac running Configurator, and revive or restore it?
The Eclectic Light Company 