Greetings. I recently purchased a 2005 Skoda Octavia with a built in navigation system. Upon leaving the dealer, the navigation was locked by code, but this seemed to be a problem that would be easily solved. NOT. I removed the radio, and found that it appears to have a non-factory system as the serial number begins with a VW rather than SK. In any case, the dealer has not been able to unlock the system even after a software update and calls to the maker of the radio. Wondering if any of you have a magic calculator to unlock this beast. Thanks!