Just received a 2009 Mac Pro with 10.10.5 Yosemite installed. Whenever I try running the firmware update tool I get the 5570 error message. What should I do? Update: had the firmware update disk image named wrong. I download both version 1 and 1.5. Version 1.5 got renamed with -2.dmg. Now running with 3.46 ghz quad core and 16gb of 1333 MHz RAM operating at 1066 MHz for some reason.