Hi!
The question is, how you would then upgrade the device, even if you
had access through ssh?
That would be the smallest problem, maybe writing/compiling a little
http/ftp/zmodem/whatever-server...? :)
The only real problem is this not beeing able to get acces, the rest
would be simple.
For the hacker's delight I would give a try to find the private ssh
key in the Windows TomTom Software. Maybe they were lazy enough to
put it in plaintext somewhere.
Maybe I'm wrong but I don't think so.
As far as I can see they don't use ssh for anything at all, not even
for upgrading (they seem to do that via port 80 and xml via http, using
signed packages).
I think they implemented that ssh-stuff for things like debugging or to
give their support a possibility to fix a device remote or such.
Don't know for sure.
Best Regards
Joghurt