MacBook Pro Retina EFI Update v1.1 Posted 12/20/2012 at 8:31 UTC in Mac by gnye@amdesign.net | Permalink | Tweet MacBook Pro Retina EFI Update v1.1 is recommended for all 13-inch MacBook Pro with Retina display (late 2012) models. This update improves sleep performance, enhances Thunderbolt router support, fixes an HDMI display issue, and improves compatibility when using the 5GHz band in Wi-Fi.