Originally Posted by xsdbs
were you able to get this issue taken care of? I just saw a member of a Ram forum, trying to do the same thing as you and is also having this same problem. I was just talking to a friend who has an Chrysler Eng contact about this swap. He said he'd check with him to see if this is possible or not. It does seem quite strange that you can go from any other radio to the 730N but not from the 730N to any other radio.
Good news, it works now! The tech did what I understood he should do, thanks to your, and others, help. He removed the RHR from the network and added the RHB and RSP. At first it seemed to not take but after a few minutes the Uconnect came on and so far works as expected. The tech said the first dealer changed the configuration but did not enable the Uconnect module. The answer is, yes you can "downgrade" from the RHR (730N) to the RHB (430N). I suspect this means you can replace any of the systems with another one as long as the part was an option.
The next concern I have is, can the original microphone be made to work with the new Uconnect module so I don't have to have the add-on microphone?
I don't care for the new color scheme either on the Garmin interface. I have a hard time seeing any or the daylight options. I can see the night time versions fine but that means changing the brightness in the dark because it is too bright. Can I change the software back to the latest version that has the familiar Garmin color scheme? If I can, what version number would that be?
Thanks to all of you for all the help.