Apple on Monday released its second firmware update in three months to resolve screen issues with its 27-inch iMac computer. This latest update is aimed at issues that “may cause intermittent display flickering,” according to Apple’s Web site. Some 27-inch iMacs have been plagued by problems since the model was launched in October 2009, and it’s been reported that Apple has temporarily stopped production of the computer. Installing Apple’s 27-inch iMac Display Firmware Update 1.0 requires the user to quit all open applications, then download the update.
