Apple has introduced a revised version of its previously-released MacBook Pro EFI Firmware Update.
MacBook Pro EFI Firmware Update 1.5.1 is described as a maintenance update to correct possible problems with the 1.5 update. “This update fixes several issues to improve the stability of MacBook Pro computers,” said Apple.
Once the update is applied the MacBook Pro’s Boot ROM version will be either MBP21.00A5.B08 or MBP31.0070.B07. Apple also introduced Firmware Restoration CD v.1.7.