Apple has released an update to the EFI firmware on their new line of MacBook Airs (mid 2011). The update includes some fixes for issues using the Thunderbolt display. It also fixes some performance issues users experienced when using Thunderbolt with Target Disk Mode.
If you’ve had these problems, go download the update in Software Update or on Apple’s site here.
Full changes after the break.
This update includes fixes that enhance the stability of Lion Recovery from an Internet connection, and resolve issues with Apple Thunderbolt Display compatibility and Thunderbolt Target Disk Mode performance on MacBook Air (mid 2011) models.
The MacBook Air EFI Update will update the EFI firmware on your notebook computer. Your computer’s power cord must be connected and plugged into a working power source. When your MacBookAir restarts, a gray screen will appear with a status bar to indicate the progress of the update. It will take several minutes for the update to complete. Do not disturb or shut off the power on your MacBookAir during this update.