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Mavericks just bricked my Macbook Pro!




Bought a good used MBP mid 2010, MC374LL/A, and performed a Mavericks upgrade.  Installation went well and finished sucessfully.  This is the second install of this type I've done with this Mavericks download, so I know its good.  There was one update for iBooks and I let that finish then turned off the machine. 
 
Later when re-starting, I get 9 beeps - 3 short, 3 long, 3 short which is the code for firmware corruption.  I've made a firmware restoration cd following instructions at http://support.apple.com/kb/HT2213 but I can't get it to work. 
 
What should I do?


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