Well... was an issue with the tool

Mike did a registry reset and forced my original back into the truck... it took the tune without anything needing to be unplugged!

now to play around!

I had to get help from phone support getting my i-1000 to update a month ago as it wouldn't download... that worked and i was able to connect to my 2007.5 silverado w/5.3L. i installed the 87 tune and disabled DOD. right on! now i figure i'd hook up and play with some of the shift settings to firm ...