how to update mac air boot rom from usb without another mac

In the Hardware Overview listing, this is given as the Boot ROM Version, and typically now looks likeġ23.0.0.0.0. I will update it to this new set when they have been distributed in security updates to High Sierra and Mojave.Īlternatively, use the About This Mac command at the top of the Apple menu, and click on the System Report… button. Note that, for the moment, SilentKnight’s reference list of firmware versions remains that for Mojave. The simplest way now is to run either of my free tools SilentKnight or LockRattler, available from their product page. How to check your Mac’s EFI firmware version

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. I am extremely grateful to Pico, who provided a complete listing, and those Mac users who have confirmed version numbers as well. See below for further details of how to obtain this. This is made up from the model designator IM144 = iMac14,4, the code 88Z or sometimes AAPLEFI4 or AAPLEFI5, the version number 0190 B00, and the datestamp of that version 1809171521 = 18/09/17 15:21. The full eficheck version number is likely to resemble

However, in Catalina eficheck now also gives version numbers using the new notation. One numbering system used by the eficheck tool still uses the older system with two hexadecimal numbers, e.g. That displayed in System Information uses five decimal numbers separated by dots, e.g 96.0.0.0.0, and is given below. If your Mac is still running an earlier version of macOS, such as El Capitan, then you should refer to version 2 of this list instead.Īpple doesn’t provide an official list of the current EFI firmware versions which should be installed on each model of Mac.

This article lists the firmware versions of Macs which have been successfully updated with Catalina Security Update 2022-001.įor older Macs and earlier versions of macOS, please refer to the previous listing of firmware versions. MacOS 10.15 Catalina brings EFI firmware updates for all supported models, and subsequent updates have changed those for most models too.

How to update mac air boot rom from usb without another mac