Speak to Jaycar if any one has them they will know. I tried looking at their electronic catalogue, but too many choices to sift through whereas a person to person question may get a better answer. www.jaycar.com.au/search
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
1) Are you looking for different software than the OEM supplied 'genuine' Toyota GPS system?
2) Or are you looking for current maps to replace older, outdated ones?
If #1 then sorry, its a closed Toyota system. They will NOT sell any update software alone, it is included with the map updates (usually hidden from users) and happens automatically - you can't prevent it!
If #2 then you can have a dealer swap your system's micro SD card to one with newer maps -eg PZQ060-00554 SD Card (costs $$$$). This will include firmware and map updates, and contains an authorization code based on your screen hardware ID and VIN that the dealer will add. OR you can update an existing card online for a fee (cheaper than a dealer update).
The update online option is the best choice as it also backs up your existing SD card data remotely in case the card gets damaged, full, or lost, etc.
bye.
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Bruce & Judy pulling a 3T 23.5' Traveller Prodigy behind a Diesel Range Rover