by , 8:40 AM EDT, September 28th, 2007

Apple released Firmware Restoration CD 1.4 on Thursday. The new version supports several Intel-based Mac models including the mid 2007 MacBook and the 8-core Mac Pro.

The Firmware Restoration CD returns a Mac's firmware to a previous version in the event that an update failed. It does not, however, "roll back" firmware when a firmware update completed successfully.

Macs supported by Firmware Restoration CD 1.4 include:

• iMac (Late 2006 17 and 20-inch) iMac5,1
• iMac (Late 2006 17-inch CD) iMac5,2
• iMac (Late 2006 24-inch) iMac6,1
• MacBook (Late 2006) MacBook2,1
• MacBook (Mid 2007) MacBook2,1
• MacBook Pro (Core 2 Duo 15-inch) MacBookPro2,2
• MacBook Pro (Core 2 Duo 17-inch) MacBookPro2,1
• Mac Pro MacPro1,1
• Mac Pro (8-core) MacPro2,1
• Xserve (Late 2006) Xserve1,1

The restoration CD is available for download at the Apple Support Web site.