Existing users, 
This firmware description says it's for "all MacBook models," but in the "What's new in this version" section it says "This update improves the performance and reliability of Intel Core 2 Duo processors..." So which is it? Will it work with my wife's Core Duo MacBook, or only with the Core 2 Duo models? Apple is really getting sloppy.
Apple MacBook EFI Firmware Update
For MacBook (Late 2008) models.
Version: 1.3
Is it for Core Duo or not? Confusing listing.
Feedback Type: Commentary
Contributed by: Jay Thursday, September 27 2007 @ 04:09 PM PDT
Product Platform: MacOSX
Used Product For: Over One Year
Comments
LOL - stam
Hey, don't hold back now, tell him what you really think of him :DTuesday, April 08 2008 @ 03:33 PM PDT
Is it for Core Duo or not? Confusing listing. - shavital2
At <http://www.apple.com/support/downloads/macbookefifirmwareupdate11.html> it says: About MacBook EFI Firmware Update 1.1This update improves the performance and reliability of Intel Core 2 Duo processors and fixes issues with Boot Camp for MacBook computers.
After the firmware is successfully applied to your computer, your BootROM Version will be:
MB21.00A5.B07
You can confirm the version of the BootROM installed on your computer using System Profiler."
After going through, carefully and successfully, the firmware application process, I got an on-screen message, more or less: "The firmware of your computer has been successfully updated with EFI Firmware Update 1.1. And in System profiler, it shows: " oot ROM Version:MB21.00A5.B07". So, no complaints here.
Thursday, September 27 2007 @ 05:48 PM PDT
Is it for Core Duo or not? Confusing listing. - squishy
My macbook early model Core Duo said the update is not required.Thursday, September 27 2007 @ 06:49 PM PDT
Is it for Core Duo or not? Confusing listing. - bratdaddy
I read the description as 'for Core 2 Duo' Macbooks. Installed without incident.Friday, September 28 2007 @ 02:59 PM PDT
Is it for Core Duo or not? Confusing listing. - MoonlightofDeath
Let's clear this up, it will not install if your computer ain't supported by it unless you hacked it up or something. Also, EFI updates show up in Apple Software Update so if you updated to OS X 10.4.10 and this didn't show up, I am 99.9% positive you don't need this.Friday, October 19 2007 @ 05:27 PM PDT
Do you work for MicroShaft? - nawlinsfonk1
Because every one of your worthless comments ends with some crap about how Apple is the worst thing in the history of the universe.If you don't like it, buy a PC, get a million viruses and join the legions of Windoze idiots. They'd be glad to have you. If you have constructive comments to make, try to make them without ending on "Apple is seriously losing it" or some other pointless garbage.
P.S you are a massive idiot.
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Thursday, September 27 2007 @ 04:25 PM PDT