Not sure if it will be possible even if you find a disk... from memory, there is a key that needs to be generated through Land Rover Australia - In-car GPS Upgrades for Australia and New Zealand - powered by TomTom® maps when you place the order. I did a summary of the update process a couple of years ago.
Bummer that the product is not available. I find though that even the v22 is losing usefulness, and most often just use Sygic on my phone. (I do not use tom tom because they seem to want an ongoing subscription these days)
Bookmarks