Thank you for your review
Email me when discounted: 
Apple 27-inch iMac EFI FW Update...The update is recommended for all quad-core Intel Core i5 and Core i7 processors 27-inch iMacs.

This update addresses the following:

  • Resolves an issue that sometimes caused high processor utilization while playing audio through the headphone output mini-jack.
  • Resolves an issue that prevented the display backlight from turning on after powering on the iMac.
When your computer restarts a gray screen will appear with a status bar to indicate the progress of the update. Do not disturb or shut off the power on your iMac during this update.


27" iMac.

Similar Software

Open Comparison
Suggest Other Similar Software
Get these apps for
Leave a Review

27-inch iMac EFI FW Update User Discussion

To leave a comment, you need to be logged in.
Sort by: Time | Smiles
27-inch iMac EFI FW Update needs a rating. Be the first to rate this app and get the discussion started!
5 1


Current Version (1.x)


Downloads 797
Version Downloads 796
Type Utilities / System
License Updater
Date 14 Apr 2010
Platform Intel 64 / OS X / Intel 32
Price Free
download install download install purchase purchase
Save 91% The Fall Bundle 11 Awesome Apps • 1 Low Price