Having a M4 SSD 256Gb with the older firmware I have problems that maybe once a week the computer freezes. My Macbook Pro early 2008 with the latest OS X Mountain Lion don't have a working optical drive, so I can not follow the instructions creating a CD to startup and run the firmware update. I have an external harddrive with the system working that I can startup the computer from. So now I wonder if and how I can start from the external disk, and run the upgrade from there?
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