Skip to content
Thoughtful, detailed coverage of everything Apple for 28 years
and the TidBITS Content Network for Apple professionals
2 comments

27-inch iMac Graphics Firmware Update 1.0

Apple has released a much-needed firmware update for the 27-inch iMac that aims to address that model’s widespread display problems. The update is for the ATI Radeon HD 4670 and 4850 graphics cards, and corrects issues causing “image corruption or display flickering.” Those issues have been widely discussed in Apple’s Support Discussion forums (see “New iMac Screens Cracking and Flickering,” 10 December 2009) in conjunction with instances of shipped iMacs arriving with cracked screens – still no word on that latter problem. Finally, take heed of this important warning in Apple’s release notes, “Do not disturb or shut off the power on your iMac during this update. Loss of power could result in your iMac failing to start up.” The update is available via Software Update and the Apple Support Downloads page. (Free, 683 KB)

Subscribe today so you don’t miss any TidBITS articles!

Every week you’ll get tech tips, in-depth reviews, and insightful news analysis for discerning Apple users. For 28 years, we’ve published professional, member-supported tech journalism that makes you smarter.

Registration confirmation will be emailed to you.

Comments About 27-inch iMac Graphics Firmware Update 1.0