I just wanted to confirm, that the Desire Z works with the Skoda Premium Bluetooth and the Bolero radio.
I still have software version 1.34.405.5 as it this particular software version that you need to root your phone.
I also get the SDP fix failed message, but it doesn't seem to bother neither the phone nor the car unit.
The address book also works fine, but I currently don't have any pictures in it, so I can't tell the results with contact pictures yet.
As stated by the admin, the Desire Z does not leave the rSAP mode and needs a reboot to get back to normal operation. Thats OK for me now, since I didn't have rSAP with any newer phone by now, and this is a major improvement, despited the reboot after leaving the car.
I would gladly help try testing on the Desire Z, so maybe this problem can be sorted out in the near future.
Thanks a lot for this great piece of software