Um I tried all the techniques on the first 2 pages of Google before I even posted this's this isn't my first time posting here but I did try all the google suggestions. The second part of your post I don't even understand? Anyone here with a real suggestion? I have tried pm'ing the guy I bought it from inbox is full. I read somewhere a kenwood authorized dealer can reset it that's probably what I will have to do.
The only default code for the Kenwood receivers is "KCAR" (5227), then press track forward button when done. If this does not work, then the unit needs to be sent to Kenwood with proof of purchase for them to unlock it.