Hi. I'm new here, Planning to buy X930BT, have x910BT now.
Just a clue. When I've hacked x910Bt I was able to install third party navi software, using testmode 2.3 and launcher, found on Russian site 4pda.ru. However all navi application run (Navitel, Autosputnik, etc.), I couldn't manage to free GPS (Com 7) port. I've tried three or four versions or Port Splitter with no positive result.
After searches I found a solution which I haven't tried, but it was claimed that it should work: The guy with nickname Porutchik suggested to reflash WinCe image with older one from F900BT, don't remember