Replacing the Base Map on my Go620

JLoch Registered Users Posts: 3
Novice Seeker
I am having a lot of trouble doing something I thought would be relatively easy!
I own 620 European model which has a European Base Map installed on it but I am now in Australia, so I'm looking to purchase the Australian Base Map so I can use my 620 while I'm here. I thought I had done just that but after 24hrs (of my life) for some reason the purchase has "Failed" see attachment, which was a Base Map of the rest of the world
But I since noticed that you have an Australia only Base Map which is exactly what I need, could please tell me how I do that?