Following a survey of 37 iMac17,1 systems, there’s no evidence problems are caused by hardware. It’s most likely to be a bug in the firmware installer.
firmware
Many of this model have been unable to update to newer firmware versions. An appeal for users to report their firmware version and logic board ID.
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.
LockRattler for manual checks, SilentKnight to check automatically, and silnite for networked Macs and automation.
Provision of maintenance procedures and tools is at the heart of software engineering, but not in macOS.
macOS Catalina 10.15.6 Supplemental Update is promised to address two problems: some Macs running Virtual Machines under VMWare […]
What is wrong with this iMac, which has such a struggle updating its firmware? And why is Apple not acknowledging the problem?
Aim to fix longstanding failure to change version numbers after installing updates, and support Big Sur.
What do you know about the hidden and unmounted EFI partition on all the disks you use with your Mac? It could be very important.
