For anyone trying to use 9.205 on Rider v2...I spent a day reading/testing/blablabla....And finally
What you need is the DSA 9.20.5 Navcore from here:
http://www.navitotal.com/forums/showthread.php?2194-DSA-NavcoreJust add your maps, voices, speedcams and run AutoActivate from card to patch all of those (if not patched already). Do reset the TomTom via reset hole (hold it for 15s) and everything will work including BT Headset!
I tried to create 600km route and it was calculated/loaded without a problem and still 3Mb free memory....