Ran this software, http://dosdude1.com/files/macstuff/Mac Pro 2006-2007 Firmware Tool.zip That worked in this video regarding quad core Zeon installation in a 1,1 machine, And my machine still is registering as a 1,1 machine, even after a secondary reboot. I followed the instructions. Run the software, reboot, hold the power button until the flash halts, beep, bong, reboot, done. But it doesn't seem to have worked. I'll be upgrading soon, to the same processors, and I'd like to get this out of the way. Anything I did wrong, or perhaps a better version? I'm doing my research as I type this, but some personal input is always appreciated!