Apple released a 3.99 MB firmware update for the mid 2011 Macbook Air models yesterday that addresses the stability of Lion Recovery from an Internet connection, resolves issues with Apple Thunderbolt display and Target Disk Mode performance.
The Apple support document states “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.
After this update has successfully completed, your Boot ROM Version will be: MBA41.88Z.0077.B08.1109011050 .”
For more information on Lion disk recovery or using the Lion Disk Recovery disk assistant, see our story here.