Howdy MikeRevitt,
It sounds like you are unable to install a firmware update for your OS. I want to recommend these steps from the article named:
About firmware updates for Intel-based Macs
http://support.apple.com/kb/ht1557
If the updater was not successful, try installing again by opening the Firmware Updater application, which is located in the Utilities folder (/Applications/Utilities). Then go to Step 4 above.
In the unlikely case that your computer displays a black screen after starting up, you can restore your computer's firmware back to factory condition. Follow the directions to restore your firmware.
Important: An Intel-based Mac's hard disk must be formatted with the GUID partition scheme to apply a firmware update. Intel-based Macs are shipped this way from the factory. If you have reformatted your hard drive, you should check which scheme your hard disk is currently using before applying a firmware update.
Note: If you are applying a firmware update using a version of Mac OS X earlier than version 10.5, you cannotapply firmware updates on a computer that starts up from a software RAID (Redundant Array of Independent Disks) volume. If you are starting up from a software RAID volume, you must start up from a storage device other than a software RAID volume to apply this update.
Some USB and FireWire devices may prevent firmware updates from installing correctly. If you are having trouble installing an update try disconnecting non-essential devices and use only an Apple keyboard, mouse, and display.
Thank you for using Apple Support Communities.
Take care,
Sterling
