Your Mac has installed a spurious version of the firmware, such as malware.It may rarely occur if you download the latest Combo updater for macOS. This may happen if you install a beta release of macOS, or could happen after service to your Mac.
Your Mac has installed an updater which has in turn installed a newer version of the firmware.There are two reasons for the major version being higher than that shown: What to do if your Mac’s firmware is different from that shown In the Hardware Overview listing, this is given as the Boot ROM Version or System Firmware Version. The simplest way now is to run either of my free tools SilentKnight or LockRattler, available from their product page.Īlternatively, use the About This Mac command at the top of the Apple menu, and click on the System Report… button. The iMac Pro, 2019 Mac Pro, iMac 27-inch 2020, 2018 MacBook Pro with Touch Bar (MacBookPro15,1 and 15,2), 2018 Mac mini and 2018 MacBook Air, and their successor models, all use a different mechanism for firmware updates, managed by their T2 chips. The current EFI version is 1968.120.12.0.0 and iBridge is. Macs still running older versions of macOS are covered by information at: Apple Silicon Macs are different again, and give an iBoot version instead, as they don’t use EFI at all. Those models with T2 chips consist of two parts, the second covering iBridge in the T2. That displayed in System Information for Intel models uses five decimal numbers separated by dots, e.g 96.0.0.0.0, and is given below. This article lists the firmware versions of Macs which have been successfully updated to run macOS 11.7.8.Īpple doesn’t provide an official list of the current firmware versions which should be installed on each model of Mac.
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