Changes to XProtect and XProtect Remediator in macOS 27 can appear puzzling. And why does it still get MRT from 2022? Plus details of firmware and Recovery systems.
mBoot
Before the T2, EFI firmware in Intel Macs was complicated. Then simplicity arrived: all Macs running the current version of a supported version of macOS had the same firmware. Not any more they don’t.
