Check this out!
I just changed the url from sph-da100 to sph-da110 and it worked!, I think the release is near! http://www.pioneer.eu/eur/products/25/299/35829/SPH-DA110/page.html
My Navfree (Sweden) doesn't work either. I have AR2 European FW 8.17 Iphone 4. It's only black on my Headunit. I think there is a problem with the navfree app...