This thread is 4 months in the making (because I am exceptionally lazy) but the project is finally complete.   Long story short I have a 2010 Octavia Elegance and I wanted to upgrade the standard Bolero headunit to something with bluetooth and DAB. I also wanted to have navigation if possible but this wasn't an absolute requirement. I also wanted to keep the CANBUS functionality of the OEM headunit, mainly the HVAC and parking sensor display.   After discovering with absolute