By now your Mac should have the latest macOS update installed, and be running the current firmware. This article takes stock of where EFI, T2 and Apple silicon firmware are now, and where they’re heading with the forthcoming release of macOS 26 Tahoe in a month or two.

For many years, the only way your Mac will have its firmware updated is when macOS or one of its updates is installed on it. There is one significant exception to that, in Apple silicon Macs, whose firmware will be completely replaced when it’s put into DFU mode and restored from an IPSW file.

Each macOS update or full installer comes with the firmware current at the time Apple built it. So if your Mac is still running macOS 12.7.6 Monterey and has never installed any later version, it will have the firmware that came with that, such as iBoot 10151.140.19, or T2 version 2022.140.5.0.0 with iBridge 21.16.6074.0.0,0.

Note that firmware is updated whether macOS is installed or updated on the internal storage, or on an external disk. So if your Mac’s internal SSD is still running 12.7.6, but it has been used to update Ventura to 13.7.7 on an external SSD, then it will have the firmware brought in that version of Ventura, rather than that for Monterey. That doesn’t of course apply to macOS installed in any virtual machines, as they can’t update the host firmware.

Intel Macs without T2 chips

All these models appear to have reached the end of their EFI firmware updates, with the versions shown.
iMac:

• iMac18,1 529.140.2.0.0
• iMac18,3 529.140.2.0.0
• iMac19,1 2075.100.3.0.3

MacBook:

• MacBook10,1 529.140.2.0.0

MacBook Pro:

• MacBookPro14,1 529.140.2.0.0
• MacBookPro14,2 529.140.2.0.0
• MacBookPro14,3 529.140.2.0.0

All those date from 23 June 2024, apart from that for the iMac19,1, whose latest firmware is from March 2025. Although the latter could still be updated in a security update to Sonoma or Sequoia, that now looks increasingly unlikely.

Intel Macs with T2 chips

The current EFI version is 2075.140.4.0.0 and iBridge is 22.16.16083.0.0,0, and those are likely to continue to be updated over the coming year. However, T2 models still running macOS Ventura are likely to stay there, unless Apple releases one final extra update. To ensure that your T2 Mac continues to get firmware updates, it now needs to be running Sonoma or later.

Apple silicon Macs

The current iBoot version is 11881.140.96, and that is sure to see a substantial update with the release of macOS 26.0, and in the simultaneous security updates for Sequoia and Sonoma. However, any Apple silicon Mac still running Ventura or earlier will be running an older version of iBoot that it can’t update, unless it installs or updates a more recent macOS in another boot volume group, such as on an external disk.

Apple Studio Display

Display firmware remains at version 17.0 (build 21A329) as it was when updated with macOS Sonoma nearly two years ago in September 2023. Although there’s no sign of any update with the beta-test versions of Tahoe, maybe it’s likely that this will be updated with macOS 26.0 and its associated security updates.

Check

The currently installed firmware version is displayed in System Information, by selecting the Hardware item at the top left. It’s also checked against the current version in SilentKnight. However, in recent Mac models with T2 or Apple silicon chips it’s most unlikely to differ from that brought with the latest version of macOS that Mac has installed or updated. Macs without T2 chips were less reliable, and some older models often failed to update when expected. Thankfully that’s now a problem of the past. If there’s one thing you should be able to trust it’s firmware updating.