
For Apple 27-Inch iMacs with intermittent screen flickering display problems, Apple released a new firmware fix to correct the issue yesterday. The 27-inch iMac Display Firmware Update 1.0 will update the display firmware on your iMac.
Apple released a graphic update to fix he issue in early December but with little success. The new 27-inch iMac Display Firmware Update 1.0 is said to directly address the iMac Display itself thus fixing the problem permanently.
Download The 27-inch iMac Display Firmware Update 1.0 from Apple if you are having flickering problems on your new 27-Inch imac.