Apple releases firmware updates for late 2012 Macs
Apple has released a couple of firmware updates which offer improved sleep performance and greater Thunderbolt and 5GHz Wi-Fi network compatibility for the late 2012 iMac and 13-inch MacBook Pro with Retina display, plus a fix for a HDMI display issue on the MacBook. A third update, for all late 2012 Mac models, also offers greater compatibility when using 5GHz Wi-Fi.
Release notes:
About iMac EFI Update 2.0
This update is recommended for all iMac (late 2012) models. This update contains general performance fixes pertaining to sleep and Thunderbolt, and improves compatibility when using the 5GHz band in Wi-Fi.
About MacBook Pro Retina EFI Update v1.1
This update 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.
About Mac Wi-Fi Update 1.0
This update is recommended for all late 2012 Mac systems. This update improves compatibility when using the 5GHz band in Wi-Fi.
The updates should appear in the Mac App Store on compatible machines, but you can also download them from Apple’s support website.
