Hey guys, I have searched the hole internet and I think you are the rescue...
I'm from germany and me and my wife we bought us in 2008 the Avic HD3 - Z2 is the US version.
After years we thougt in december that we need an map-update...so i found a drive at eBay that has the maps from 2010 and a puts the Software from HD3 to HD3 II (Z3)
Delivered from California it reached me one month later...i replaced the drive, the Unit made some updates and everything was fine...until today.
When the Unit starts it only shows Starting up Pioneer and after 5mins I think you can see the Navgate picture b