About the MacBook Pro EFI Firmware Update 1.7 and iMac EFI Firmware 1.4 Updates

MacBook Pro EFI Firmware Update 1.7 addresses an issue using drives based on the SATA 3Gbps specification with the MacBook Pro introduced in June 2009.  This update allows drives to use transfer rates greater than 1.5Gbps, however Apple has not qualified or offered these drives for Mac portable computers, and their use remains unsupported.  All previous and current Apple portables with a SATA drive interface include a SATA 1.5Gbps hard drive. iMac EFI Firmware 1.4 Update addresses issues where iMac computers with ATI Radeon HD 4850 graphics intermittently stop responding and addresses wake-from-sleep issues in Boot Camp.