Well, had the supposed "fix" today.
Dealer confirmed installs went OK with no errors. The result was as follows
Nav update1 13dec13.jpg
However, I ran a small test to confirm whether I could notice any changes.
I ran a trip, from Sydney to Tuncurry.
The image below shows with a red line what the Jeep system routed, when selecting the "shortest route"
The green line shows the actual shortest, and most logical route.
From what I can see, the upgrade has made no positive impact in the way the system is performing, it still wants to add a further 10's of klms on the trip.
I truly doubt if Jeep Aust have the mentality to objectively look at the issue and come up with a viable solution. A $150 device will easily out perform the $,000's of system that Jeep have come up with.