MacBook EFI Firmware Update--Version 1.2

Dear Guys, the computer simply hangs there when it is running the installation of this MACBOOK EFI FIRMWARE UPDATE--VERSION 1.2
This problem has persisted for the past 2 weeks or so since this Version 1.2 came about. Any idea?
THANKS.

Jimmy Chiu wrote:
It is during the second stage: Running the Installer.
Down the update manually from here:
http://www.apple.com/downloads/macosx/apple/firmware_hardware/
Be very very sure to select the correct one.
Install this one and see if it works. Usually this is a better way anyway.

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