If your computer is already in this state, you'll need to download the software and create the CD on another Macintosh computer, or you can take your computer to an Apple Store or Apple Authorized Service Provider to restore your firmware. You can only use this to restore the firmware after an interrupted or unsuccessful update. Note that Apple offers an Intel-based Mac firmware restoration CD that can help resolve serious issues like this, which are sometimes the result of a failed firmware update process.
The update never showed the progress bar." Problems starting up We've received reports of an inability to properly startup after applying the most recent batch of firmware updates. If you are experiencing this issue, please let us know.
"As hundreds of other MBP users have reported all over the web tonight, I have not been able to upgrade my C2D (02 Boot Rom Version) to the promised 03." - Jay Klein. Right after clicking Shut Down, it would prompt me with this message: 'An unexpected error occurred (0). "I've tried 3 times now (after reboot and repairing permissions), but the MacBook Pro EFI Firmware 1.4 just wouldn't install on my MacBook Pro Core 2 Duo 2.33GHz (late 2006 model). Downloading a fresh copy and doing a clean boot does not help." - Bill Halberstadt Your firmware cannot be updated." This appears just after clicking the 'Restart' button. 
Attempting to apply the Firmware Update 1.4 gives "An unexpected error occurred (0).
"My MacBook Pro is a Core 2 Duo 2.33 GHz, 17", with Mac OSX 10.4.10. The new EFI Firmware 1.4 update says my computer doesn't need it." "I have a MacBook Pro with Boot Firmware 02. My firmware remains 01 after numerous attempts." - Ralph I restart as normal, then try again, and same error. "When trying to run the firmware update, I get an error message along the lines of "unexpected error occurred (0) unable to upgrade firmware". Still, some users who have determined their machines to be eligible for the updates are unable to apply them - particularly on MacBook Pros. Core Duo MacBook Pros have BootROM version strings that start with MBP11 or MBP12, and use EFI firmware revision 1.2. Knowledge Base article #303880 has a matrix of systems and their current firmware versions, which you can use to determine whether or not your system can receive one of the new updates.įor instance, the MacBook Pro 1.4 firmware revision is only for Core 2 Duo MacBook Pros, which carry a BootROM Version string that begins in MBP21, MBP22 or 03. 
Will not install on eligible machines - particularly MacBook Pros Several users have reported an issue where the new firmware updates refuse to install on eligible Macs.
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