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Questions tagged [firmware]

A firmware is a type of software that provides control, monitoring and data manipulation of engineered products and systems.

171 questions
3
votes
3 answers

updating an EFI Firmware on an unsupported iMac running Monterey

I'm running Monterey 12.5.1 on a late 2013 iMac (iMac14,2) using OpenCore Legacy Patcher. This model should only be able to run the latest version of Catalina hence the need to use OCLP. Using SilentKnight suggests that the EFI firmware needs…
audioscapist
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2
votes
1 answer

What does the "aapl,panic-info" output from "nvram -p" mean?

When I run nvram -p I get the following: $ nvram -p | cut -c1-30 aapl,panic-info %f0%b0;=F%8d%e BootCampHD %02%01%0c%00%d0A%03 boot-image %02%01%0c%00%d0A%03 SystemAudioVolume W The line with panic-info is actually ~9000 characters long. What…
user588
2
votes
1 answer

Can you know the macOS version from the firmware version in Macs?

I’d like to know if it’s possible to know what macOS version is installed in a Mac (such as macOS 10.14.3) if you can get the firmware version (such as in System information). I sometimes cannot log into a customer’s Mac because it’s Filevault…
Antonio23249
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2
votes
3 answers

What's the purpose of Mac firmware standalone updates still offered by Apple online?

I'm learning Mac troubleshooting and have stumbled upon this article several times, which very clearly explains that you can download and install these updates from macOS itself: About EFI and SMC firmware updates for Intel-based Mac computers (no…
Antonio23249
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2
votes
1 answer

Any proper list of Mac firmware versions (Boot ROM versions) and the corresponding macOS version?

Any proper list of Mac firmware versions (Boot ROM versions) and the corresponding macOS version? This can be useful if you receive a Mac with the storage damaged and the customer wants to have the same macOS version that was installed when the…
Antonio23249
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2
votes
0 answers

How does apple's EFI compare to the UEFI standard?

Apple's EFI in macs were the first implementation of EFI by Intel but then Intel revised their work and made UEFI for PC's which is newer and possibly better. I wanted to know if Apple's EFI has been receiving updates through the years or is it…
robryecran
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0
votes
1 answer

Firmware Password Change Instructions don't match Software Menu's

https://support.apple.com/en-us/HT204455 Instructions do not match my Mac's Menu (current OS) - there is no Startup Security Utility or Firmware Password Utility.
PioneerPoint2006
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