As usual, Apple’s release notes for the Supplemental Update to High Sierra, released on 5 October 2017, fall […]
EFI
A checklist of the latest EFI firmware versions which should be running on each recent Mac model.
As Apple controls hardware, firmware, system software, and their updates, EFI firmware should be kept up to date reliably. But it isn’t. What’s gone wrong?
Every week, Macs running High Sierra will check the integrity of their EFI firmware, in a bid to detect tampering by malware.
How to update your firmware, reset the SMC, and reset the NVRAM (or zap the PRAM), and what they do. Updated for High Sierra.
A guide to different tones sounded at startup, how to cope with EFI ROM update problems, and MacBook Pro 2016 issues.
Hackers claim 300 million compromised iCloud accounts, and Wikileaks claims details of techniques being used by CIA to spy on Mac and iOS users. Fact or fake?
These store key information for your Mac. Resetting the SMC and NVRAM is no panacea, but can transform an apparently dying Mac.
What to do when your Mac won’t start up, and is acting dead, or at least mortally wounded.
The Eclectic Light Company 