The MacBook Air EFI Firmware Update 2.6 is recommended for MacBook Air (mid 2012) models.
This update fixes a color issue with HDMI displays connected to MacBook Air, resolves an issue with Windows which can prevent MacBook Air from booting properly, and also resolves an issue where unplugging a Thunderbolt device may cause the system to freeze when waking from standby.
The MacBook Air EFI Firmware Update will update the EFI firmware on your computer.
After update EFI ROM will be: MBA51.00EF.B02
OS X 10.8.2
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