I'm trying to install this EFI Update. Which is for :
Mac OS X 10.6.8 / OS X Lion 10.7 and later
And I'm running on 10.9.3 but the update installer throw an alert :
The update is not supported by your system.
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According to Apple you should use following EFI versions.
MacBook Pro (13-inch, Early 2011) MacBookPro8,1 MBP81.0047.B27 (EFI 2.7) 1.68f99 (SMC 1.6) MacBook Pro (15-inch, Early 2011) MacBookPro8,2 MBP81.0047.B27 (EFI 2.7) 1.69f4 (SMC 1.7)