After any security update (EFI), my macbook reboot constantly and start OS without installing the Update. i dont know what i have to do

Hello people. i need some help. i bought my macbook pro the last april 2012. i tried to update everytime i can, but always i have problems: the installer start normally, but the problems start when my system tell me i have to reboot. i press "reboot" and after that my mac reboot 3, 4 o 5 times, and the grey bar doesn't change or move or anything and OS after the 5 times of reboot, start normally, but without installing the update.
sorry for my english. its not my native language.
greetings.

ok....try this.....this is the long version.........
open disk utility and verify and repair your disk permissions......once the errors are repaired, shutdown your macbook and do a PRAM reset....
once you're up and running, turn bluetooth off and make sure your macbook is plugged in your AC outlet...
try updating your efi again.....
not quite sure what those sounds you're hearing are...

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After any security update (EFI), my macbook reboot constantly and start OS without installing the Update. i dont know what i have to do

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