Apple Updates: EFI Firmware for Intel-based Macs

Intel-Based Mac EFI Firmware Updates
This EFI Firmware Update fixes several Boot Camp and start up issues on Intel-based Macintosh computers.
Requires Mac OS X 10.4.7 or later
iMac EFI Firmware Update 1.16.1MB
MacBook Pro EFI Firmware Update 1.22.7MB
MacBook EFI Firmware Update 1.01.6MB
Mac mini EFI Firmware Update 1.11.6MB
Mac Pro EFI Firmware Update 1.11.6MB

Firmware Restoration CD 1.220.5MB
The Firmware Restoration CD is used to restore the firmware of an Intel-based Macintosh computer.

After the firmware update is successfully applied to your computer, your Boot ROM Version will be:
IM41.0055.B08 (early 2006)
IM42.0071.B03 (17-inch mid 2006)
IM52.0090.B03 (17-inch late 2006 CD)
IM51.0090.B03 (20-inch late 2006)
IM61.0093.B01 (24-inch)

MBP11.0055.B08 (MacBook Pro 15 inch)
MBP12.0061.B03 (MacBook Pro 17 inch)

MB11.0061.B03 (MacBook)
MM11.0055.B08 (Mac mini)

MP11.005C.B04 (Mac Pro)