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Sorry for the delay and thank you for your patience. My name is Michael. I will be helping you with your question today.
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Where did you purchase it and what country are you trying to use? Models are specific to regions and will only work in the region where purchased.
Assuming you are I the US for example, a TomTom 6000 EU would not work since it is for Europe.
And you are in the US? If so, that is the wrong model. You need the US model.