Despite the change of car to one that doesn't have built in Sat Nav and hence the loss of head unit that homed Primo 2.0 I have purchased a Wayteq x960BT 5" windscreen mounted (urghhhh) portable unit. Copied over my backup of Primo from the old device, deleted the SAVE folder (after I couldn't get a GPS fix), changed the file path to the EXE file in SYS.TXT and bobs yer uncle Primo sprang into life. Really impressed with the speed of loadup and that it does everything my previous one did.
Only issue I had was getting the TMC module I bought with it to work. But reading through the threads on here finally got that up and running. So for £80 GBP I have a device that in my opinion is far superior to anything Tomtom have (well at least until you spend big bucks).