Apple | Apple MacBook Air EFI Firmware Update 2.0
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Author:
Apple, Inc.
Date: 12/09/2010 05:57 AM Size: 2.4Mb License: Update Requires: OS X 10.6 Downloaded: 4848 times 
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This update resolves a rare issue where MacBook Air boots or wakes to a black screen or becomes unresponsive. This update is recommended for all 11-inch and 13-inch MacBook Air (late 2010) 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.
Boot ROM or SMC Version Information: After this update has successfully completed, your Boot ROM Version will be: MBA31.88Z.0061.B01.1011181342
The ROM itself is: 0061.01
System Requirements
Mac OS X 10.6.5