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MacBook EFI Firmware Update 1.1

This update improves the performance and reliability of Intel Core 2 Duo processors and fixes issues with Boot Camp for MacBook computers.

After the firmware is successfully applied to your computer, your BootROM Version will be:
MB21.00A5.B07

You can confirm the version of the BootROM installed on your computer using System Profiler.

To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/MacBook EFI Firmware Update.app). The updater will launch automatically when the Installer closes.

For more information about firmware updates for Intel-based Macs, please visit: About firmware updates for Intel-based Macs

File Size: 1.7MB

System Requirements Supported Languages