I finally got my ECM back from PCM Calibrators after 5 months of back and forth with them. I was hoping to put it in and go. The OS is different than what I need and it is in a crank-no start cycle now. I tried to re-flash to a different OS, but that option is grayed out. Does this mean something was changed inside that makes my ECM no longer connected to my license? Am I going to have to buy another license? I have already spent $400 on this $65 unlock, and its really going to tick me off if I have spend $125 more on it. If I had a hammer I'd beat this thing into a worthless lump of aluminum!!! Oh, it already is!