L'ho provato adesso e funziona perfettamente…
About the Firmware Restoration CD
The Firmware Restoration CD can restore the firmware of an Intel-based iMac (Early 2006), Mac mini (Early 2006), or MacBook Pro to original factory condition.
You can only use this to restore the Firmware after an interrupted or failed update. 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. This CD can be created on both PowerPC and Intel-based Macintosh computers.
Note: This CD cannot be used to return an Intel-based Macintosh computer's firmware to a previous version if a successful update has already been performed.
You can locate the software for the Firmware Restoration CD at
Apple Downloads.
To restore your computer's firmware, you must first create a CD using the disk image named "FirmwareRestorationCD.dmg", following these steps:
Open Disk Utility (located at /Applications/Utilities).
Click the Burn icon or select the "Burn..." menu item from the Images menu.
Navigate to where FirmwareRestorationCD.dmg is located, and click the Burn button.
Insert a blank recordable CD
Click the Burn button to create the Firmware Restoration CD.
The files are burned to the disc.
Next, use the Firmware Restoration CD to restore your Firmware back to factory condition:
Ensure that the computer you are trying to restore is plugged into an AC outlet.
Turn on the computer and continue holding down the power button until the LED blinks rapidly followed immediately by a successive series of blinks (3 quick blinks, 3 slow blinks, 3 quick blinks), then release the Power button.
Insert the Firmware Restoration CD into the optical drive. You will hear a long tone once the recovery process has begun.
After 30-60 seconds, the startup beep sound is played and a progress bar appears beneath the Apple logo on a gray screen. The progress bar indicates the firmware is being updated. DO NOT unplug, shut down, or restart the computer during the update or you will need to start the restoration process again beginning with step 6.
The computer will restart automatically after the firmware is updated.
