Tutoriel N° 15f
Macbook Pro EFI Firmware Update 2.2
http://support.apple.com/kb/DL1450
About Macbook Pro EFI Firmware Update 2.2
This update enables Lion Recovery from an Internet connection and includes fixes that resolve issues with Apple Thunderbolt Display compatibility and Thunderbolt Target Disk Mode performance on MacBook Pro (early 2011) models.
For more information about Lion Recovery, please visit http://www.apple.com/macosx/recovery/.
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 this update has successfully completed, your Boot ROM Version will be: MBP81.88Z.0047.B1E.1109091244
