Apple has released a software update at the weekend, the cure to the freezing issues on the iMacs, which were released this year, especially those who came with an ATI Radeon HD 4850 graphics chipset. IMac EFI Firmware Update 1 / 4 load 1.7 MB processed disk lock-up, which is coincidentally what the user restarted the iMac systems once again that while they, on Mac OS X or Windows with Boot Camp. In addition, this update also removes the problems that arise that prevent the awakening pleasant and well in the use of boot camp – as long as you’re using Mac OS X 10.5.6 or later.