iMac (27-inch, Late 2009): Display flickers and the 27-inch iMac Graphics Firmware Update 1.0

February 2, 2010 Posted By: Leave a comment
The 27-inch iMac Graphics Firmware Update applies to the graphics firmware on ATI Radeon HD 4670 and 4850 graphics cards to address issues that may cause image corruption or the display to flicker.
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