What would happen to a Mac’s firmware if you installed Monterey beta to its internal or external disk? Could that be reversed?
firmware
Apple should announce macOS 12 next week, but which Mac models will support it? Look in the firmware, not the tea-leaves for this speculative list.
iMac17,1 and other Mac models which don’t update their firmware properly can be brought fully up to date. What’s more, Apple Support is now reluctantly sorting this out those who persist with them.
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.
macOS 11.2, 11.2.1 and 11.2.2 have come in quick succession. What do they tell us about how difficult it is to update Big Sur’s sealed System volume? Is this the way to go?
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?
From Startup Manager to Internet Recovery on Intel Macs, and how to engage each of those in an M1 Mac. With comprehensive diagrams.
What were the first things you tried out on a new M1 Mac? Benchmarks, perhaps, or tested battery endurance? Try looking at Recovery Mode – that’s more important.
This article lists the firmware versions of Macs which have been successfully updated to run macOS 11.7.10. Apple […]
Identical code using system_profiler to look up the firmware version number worked in two apps but failed in a third. The solution was obscure.
The Eclectic Light Company 