For the GPS, start the HTC GPS Tool, then click Open. This starts the gps. The default is Comm 4, 57600 baud. You can then go into menu, satellite view and you will see green when it locks the satellites. This can take a while unless you have a good view of the sky. Once it locks, its not so picky.
I only used this in Google Maps. Go to Menu, settings, gps settings. Change to manual, comm 4, 57600 baud.
Also, I see other people in the thread loading the 1.3 radio. I didn't have to do that with any ROM. They just worked. I checked my radio version and its 1.27.