Nice little note at MSMobiles that TomTom 5 has now been updated.
It's not too straight forward in that you must remove the card and update it from a Reader somewhere - but at least they have tried to be very explicit about the Fact that this WIL NOT WORK from ActiveSync, etc.....
I've just got a secondary 256Mb MiniSD cardyesterday so now I can roll back the WM5 to 2003SE, back this up to the new miniSD, roll forward again to the WM5 (but now having a secure back up plan....;-) and then reformat the 512 and copy back TomTom, and upgrade to 5.2.
I don't know if I'll have a chance to do all that tonight (Went to Arsenal vs. Reading last night, and it's getting pretty cold in London these nights) but we'll see how much can be done?
Here's the direct link to TomTom 5.2