All about Mac firmware, from PowerPC Open Firmware to Apple silicon’s LLB and iBoot, and what the rules are for updating firmware.
firmware
When Apple opens WWDC on 10 June, it will release the first beta of macOS 15 to developers. By September, support for Monterey will be withdrawn. Now is the time to start planning your upgrades.
Although some are still experiencing the issue of new FileVault security keys, Sonoma 14.5 looks the best release yet, and fixes some troublesome bugs.
The keyboard firmware update that flew in under the radar, and one of many fixes in Sonoma 14.2 tackle different Bluetooth vulnerabilities. How do they affect you?
Apple has released a firmware update for its Bluetooth Magic Keyboards, although you can’t download it yourself, and […]
Six years ago, iBridge came for Macs with T2 chips, then 3 years ago Apple silicon models got iBoot instead of EFI. Now EFI support is dwindling fast.
No updates for Intel Macs without T2 chips, apart from the iMac19,1, and there only in Sonoma. T2 and Apple silicon models are more confusing, though.
This article lists the firmware versions of Macs that have been successfully upgraded to run macOS 14.8.5 Sonoma. […]
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?
The Eclectic Light Company 