Apple | Apple MacBook Pro EFI Update 2.3
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Author:
Apple, Inc.
Date: 10/27/2011 03:41 AM Size: 4.2Mb License: Update Requires: OS X 10.6/10.7 Downloaded: 7979 times 
TIP:
MacKeeper app delivers a secure and private internet experience, while helping your Mac run like new.
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This update includes improvements delivered in MacBook Pro EFI Firmware Update 2.2 that enables Lion Internet Recovery from an Internet connection, resolves issues with Apple Thunderbolt Display compatibility and Thunderbolt Target Disk Mode performance on MacBook Pro (early 2011) models.
The MacBook Pro 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 MacBook Pro 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 MacBook Pro during this update.
Boot ROM or SMC Version Information: After MacBook Pro update has successfully completed, your Boot ROM Version will be MBP81.88Z.0047.B24.1110141131
System Requirements
Mac OS X 10.6.8
OS X Lion 10.7 and later