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The Apple EFI Security Update improves security of Mac OS X 10.9.5 systems by addressing an issue where EFI could potentially be overwritten without authorization. For more information on the security content of this update see

What's New in Apple EFI Security Update

Version 2015-002:

Note: Requires OS X 10.9.5.

  • Prevents unauthorized overwrite of system EFI

Requirements for Apple EFI Security Update

  • OS X 10.9.5
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Apple EFI Security Update User Discussion

Current Version (2015-002.x)
Downloads 1,068
Version Downloads 504
License Updater
Date 22 Oct 2015
Platform Intel 64 / OS X / Intel 32
Price Free
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