Today, Apple released a new EFI Firmware Update (version 2.1) for the MacBook Air. The 3.99 MB update enables support for the yet unavailable new Thunderbolt Display.
In addition, the update addresses a few issues on the latest MacBook Air models. The fixes include enhanced stability for Lion Recovery over the Internet and improvements for Thunderbolt-related issues.
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.
For more information about Lion Recovery, please visit http://www.apple.com/macosx/recovery/.
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.
Apple notes that “After this update has successfully completed, your Boot ROM Version will be: MBA41.88Z.0077.B08.1109011050.”
The new 27 inch display is the first to include Thunderbolt cabling, which it uses to provide a single signal cable that supports video, audio for its built in speakers, and a digital interconnect for the display’s three USB 2.0 ports, one FireWire 800 port, one Gigabit Ethernet port and a Thunderbolt port for connecting up to five additional Thunderbolt devices.
Apple announced the new Thunderbolt Display back in July with a shipping date of “within 60 days”. Currently, Apple’s order page for the $999 display is showing a 2-3 week estimate for new orders.
[source for quote: Apple]