Apple has released EFI Firmware updates for the MacBook Pro, MacBook Air, Mac Mini, and iMac.
MacBook Pro EFI Firmware Update 2.7
This update fixes several issues to improve the stability of MacBook Pro (Early 2011) and MacBook Pro (Late 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
MacBook Air EFI Firmware Update 2.4
This update fixes several issues to improve the stability of MacBook Air (Mid 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
Mac mini EFI Firmware Update 1.6
This update fixes several issues to improve the stability of Mac mini (Mid 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
iMac EFI Firmware Update 1.9
This update fixes several issues to improve the stability of iMac (Early 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
You can get the updates by selecting Software Update from the Apple menu at the top left of your screen or by click here.
MacBook Pro EFI Firmware Update 2.7
This update fixes several issues to improve the stability of MacBook Pro (Early 2011) and MacBook Pro (Late 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
MacBook Air EFI Firmware Update 2.4
This update fixes several issues to improve the stability of MacBook Air (Mid 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
Mac mini EFI Firmware Update 1.6
This update fixes several issues to improve the stability of Mac mini (Mid 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
iMac EFI Firmware Update 1.9
This update fixes several issues to improve the stability of iMac (Early 2011) computers and is recommended for all users.
This update improves the reliability of booting from the network, addresses an issue that can prevent HDCP authentication after a reboot, and resolves an issue with boot device selection when a USB storage device is hot-plugged.
You can get the updates by selecting Software Update from the Apple menu at the top left of your screen or by click here.