Thats some fine work wojpen

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To others:
I dont think its patched for Australia ..
Should be world wide ...

Originally had German maps / audio / etc .
Just be careful with what you remove when replacing files ..

+ dont forget to tweak that SYS file ..

Technically the SYS file might work with nothing more than

[gps]
port="auto"
baud="auto"

As everything should go to the devices default settings