On Thursday, Apple posted a MacBook Pro EFI Firmware Update 1.4 that improves the performance and reliability of Mac Book Pros with Intel Core 2 Duo processors and fixes issues with Boot Camp on those systems.
The update will appear in Software Update for those users of MacBook Pro, Core 2 Duo Systems.
Apple said in the update, "After the firmware is successfully applied to your computer, your BootROM Version will be one of the following:
- MBP21.00A5.B07
- MBP22.00A5.B07
- MBP31.0070.B03