MacBook Firmware Update Issues

When trying to update my MacBook's EFI firmware, I came across this odd error message. The message read "An unexpected error occurred (0). Your firmware can not be updated."


The problem lies wen trying to update the firmware on an Intel-based Mac that does not have a standard GUID partition table. Essentially, this means that if you have Windows installed on your Mac, you won't be able to install these firmware updates.

There is a way to get around this, however, it takes a bit of work to make it happen. You could simply backup your data, and reformat the drive to a GUID partition table. Or you could install OSX on an external FireWire drive, boot to the external drive, and then install the firmware from there.

Full details can be read on this Apple support article.
http://docs.info.apple.com/article.html?artnum=303609