So, After seeing the video that the guys from Tek Syndicate uploaded, and seeing a 4,1 for $50 on craigslist, I decided to try to take this project on. I downloaded the Firmware update tool (supposedly all you need) and installed OSX 10.10 on an external drive (since apparently there have been issues running this utility on OSX 10.11). When I try to run the Tool, I am getting an error message that says "This Program Requires Internet Access. Please Connect your Mac Pro to the Internet and Try Again". I am connected via ethernet, so I am not quite sure what could be the issue. I have researched through the various Mac forums, but I have yet to run across a fix for this issue (or anyone with this issue for that matter). Anyone have a fix for this? First Time posting on here, so I apologize if this is an issue that has been resolved already. Thanks in advance.