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When you unboxed the unit, the quick start guide would have had you set up Garmin Express on your computer. This is where you go to update maps. I hope this helps
Sorry, there was a problem. Please try again later.The Garmin Express application is used to update maps and device software on the Nüvi 57lm. Please see the Garmin Support Center for information about installing Garmin Express to your computer: http://bit.ly/2k4hUnQ Thanks, James
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