This article lists the firmware versions of Macs which have been successfully updated to run macOS 12.1, 11.6.2 […]
eficheck
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 11.6.2 Big Sur brings EFI firmware updates for many supported models. This article lists the firmware versions […]
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.
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.
What is wrong with this iMac, which has such a struggle updating its firmware? And why is Apple not acknowledging the problem?
Have you checked whether your Mac is running the latest version of firmware? For some iMacs, that might bring an unwelcome surprise.
There are three software systems at the heart of every Mac: its firmware (‘EFI firmware’), the system kernel, […]
Catalina upgrade may fail to update EFI firmware correctly in some Mac models, notable iMac17,1. Check your firmware!
macOS 10.15 Catalina brings EFI firmware updates for all supported models, and subsequent updates have changed those for […]
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