![]() The Boot ROM version given in parentheses should match the version given above. In the first line of the response, this gives the Mac model (MBP141 = MacBook Pro 14,1), the major version (F000), the minor version (B00), and the build datestamp of that version (= 19/09/13 19:25). Once it completes, you should see a response likeĮFI Version: 00.1909131925 (Boot ROM Version: 202.0.0.0.0) usr/libexec/firmwarecheckers/eficheck/eficheck -integrity-check Open Terminal, and in its command line type But there’s no harm in running it if that gives you peace of mind. Normally, this is run automatically every week, and you should be informed of any issues which it raises. ![]() If you are concerned that something bad may have happened to your EFI firmware, and your Mac is running High Sierra or later but doesn’t have a T2 chip, you can run the eficheck tool to test this. How can you check the integrity of your EFI firmware? Then check the firmware version again.ĮFI firmware updaters are now only distributed as part of macOS updates and upgrades: Apple does not provide them separately. If the installed version of EFI firmware has a version which is lower than that shown, you can try installing macOS Catalina a second time. You should be able to check that in High Sierra and above: see below for instructions. Your Mac has installed a spurious version of the EFI 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.
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