As far as I can tell no Canadian dealer knows what to do about upgrading a 98 GS nav system.
They did not supply the NAv systems, in Canada until 2001 I believe.
That is when it went from a HardDisc to A DVD..
The Lexus Canada tech support seemed to think the 98 GS came with a CD system.
I'm pretty sure its a hard disc solution.
Anyway if there is anyone out there with upto date software on a 98/99 GS or LS, please check to see if you can get Ottawa or Toronto on you screen. Or do the maps end at the US-Canadian border .
I would be very greatful for any results.
regards,
Matthew