There is a new FW update for the 730N. I just had mine updated at the dealership and it solved a few of the problems I was having and added a feature or two.
My radio was delivered with 2.116 and was updated to 2.120. If you need to give the dealership a reason, just tell them that the NAV system keeps forgetting where "Home" is. This is one of the issues that was fixed with this update.