I had a look at the MicroSD on my phone and indeed there was an Australia folder.
Seems the GPS unit was looking for software called NaviOne and not the iGo software that comes with the MicroSD card.
Somehow we went into Navigation then possibly "set up" which brought us to a dialog box to find our way through the folders on the MicroSD.
Navigated down Australia/igo/ then some other directory and i think we selected the igo.exe file - the unit restarted and navigation worked a treat. Anyway sorry that the memory is a bit fuzzy, we were not really paying too much attention just fumbling and chatting away.
