Apple has issued a small firmware update to resolve graphics glitches on 2011 iMacs running Mac OS X 10.6.7. These issues manifest themselves as a white screen during startup, causing your computer to become unresponsive, or vertical lines on the screen while in use. From the release notes:

This firmware update fixes an issue that in rare cases may cause an iMac to hang during startup or waking from sleep. Do not shut off the power on your iMac during this update. Loss of power could result in your iMac failing to start up.

You can either grab the standalone iMac Graphic FW Update 2.0 (a 700KB download) if your mid-2011 iMac exhibits the aforementioned issues or choose Software Update from the Apple menu and follow the onscreen instructions.


FTC: We use income earning auto affiliate links. More.

Check out 9to5Mac on YouTube for more Apple news:

You’re reading 9to5Mac — experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel

About the Author