The radars (speedcam for the "gringos" ) normally are separated from the maps: For good reason: they are updated several times during the month ... so it is much easier to update them if they are as POI's ...
I have exactly the same model of GPS (NUVI 255WT); and use the file below:
[Only registered and activated users can see links. ]
Just download and unzip ... place the file poi.gpi in POI folder on your NUVI.
It covers the whole of Brazil and were reviewed in this month of December.
To check if they were installed ;disconnect the unit from the PC ... and go into the NUVI menu (portuguese menu):
Para Onde > Extras > POIs Pessoais
And here you can see the categories ... just to check ... For radar warnings are already working.
Optional (only for NUVI 255WT)
If you want you can also do an update in text files and audio ... With corrections made and that Garmin is not available yet.
These are files that I'm currently using on my NUVI 255WT
TEXT
Download and unzip, and place the file Portuguese.gtt in the folder TEXT (Garmin\Text) in internal memory.
Replacing the old files;
[Only registered and activated users can see links. ]
Voice
Download and unzip, and place both files Portugues_Brazilian_.vpm and Portuguese_Brazilian_Raquel.vpm in the folder Voice(Garmin\Voice) in internal memory.
Replacing the old files;
[Only registered and activated users can see links. ]
So your NUVI 255W is fully updated.
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