Cool looks like a really hot car.
AFAIK Toyota factory fitted GPS units are locked to Toyota versions of maps & software.
Of course I maybe wrong, someone always finds a way around these things eventually.
From what I've read, your in deep water. Lots of luck.
These links will give the run down of what has been tried.
Searching for Toyota on this forum brings up many results; if you feel like reading more:Search Toyota on the GPS forum.
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