Apple has released MacBook Air EFI Firmware Update 2.7 for mid 2013 models of the MacBook Air. MacBook Air EFI Firmware Update 2.7 This update is recommended for MacBook Air (mid 2013) models. This update addresses an issue which may cause a black screen to appear when installing Windows 7 or Windows 8 using Boot Camp Assistant if both an external optical drive and USB thumb … [Read more...] about Apple Releases MacBook Air EFI Firmware Update 2.7