I have a question: I recently purchased a MacPro 5,1 from a third party, however, I realized upon receipt that it is really an upgraded 4,1 with the firmware update. It has a 6-core 3.49 Westmere in it. I am writing because I want to know (before diving into it), if I reinstall OSX (for a clean install on a new SSD), what issues might I run into: 1) Is the firmware update built into the boot drive/OSX install or? If I replace the drive with existing boot drive a new SSD, will that effect the firmware upgradE? 2) If reinstalling the firmware update on the new SSD is needed, I have read that OSX won't boot into a 4,1 system on an un-supported CPU. Will I be able to get far enough into the OSX boot process to upgrade the firmware if I have a 6-core CPU? 3) Would it be better to do a system clone to the new SSD to get it working easily? any thoughts would be great.