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I cannot seem to find the answers after looking, so here goes plan on getting a 400 c cheap

and need some answers.

1. whats the latest firmware for the unit?.

2. largest microsd card it will take? plan on loading topo on it and removing the

coastal data and replacing it with topo data.


Thanks Tons


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1st thing to do as soon as you get it is to back up EVERYTHING on it to your PC. In the event something gets deleted you can easily copy and paste files from your PC to the GPS to get it back to it's original condition without having to possibly send the unit off to Garmin.


There is no need to remove the Blue Chart maps from the unit, unless you just don't want them on it. There is some memory room left on the unit itself and you will have the memory card where you can put any new topo maps, POIs, or .jpgs that you want to add.

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