3 Things to Know About Mac Firmware Updates
Firmware updates are bundled into macOS updates Apple does not release separate firmware patches for Macs. Critical fixes for Secure Enclave, Thunderbolt, and boot ROM are included in standard macOS updates.
Installing macOS updates is all you need to do As long as you install macOS updates through System Settings or Software Update, you receive all necessary firmware fixes. No extra steps are required.
Letting your macOS version get old is the real risk If you skip major macOS upgrades, you miss critical firmware fixes. Turn on automatic updates or check every couple of months to stay protected.