If I remove some (more) of the Voices, etc., should the 1. Which files actually get updated when you do a map update? I’m presuming folders such as Voice, Text, etc. For example Full Coverage of North America is 2.1GB using Garmin Map Updater and yet the 49 states takes up 2.51GB per Garmin Express. Using Garmin Map Updater, all the regions had smaller file sizes compared to using Garmin Express. I also tried the Garmin Map Updater and it said to install an SD card of at least 1.6GB. Will the new larger map file go onto the SD card or not? Please be aware that the map update will take place only on the internal memory of the unit, so an SD card will unfortunately not create the additional space the device will need.” “If your unit does not have enough space you will need to remove some extra files from the unit's memory. If the new map won’t fit in the nuvi’s memory then how will the 2.51 GB update fit on a 2GB SD card? Garmin Express updates the maps, but only to my Mac. Can't for the life of me figure out how to now get the maps from my Mac onto the SD card. Wanted to add Europe, so installed a new 8GB SD card, purchased the CN Europe NT DVD, installed it onto my Mac, unlocked it successfully to my nuvi. I thought when an SD card is used the whole map was downloaded to it. I have a nuvi 255w, preloaded with North America maps. Now I tried to update using Garmin Express & it said the 49 states map version 2016.20 needed 2.51GB and therefore would not fit & I needed a microSD of at least 2GB or to choose a region. I looked at the different regions & when I went back to update there was an option for the lower 49 states & the file size was 1.6GB and this worked. At that time initially it came up with US & Canada & the file size was 2GB. Last year I updated my nuvi 1350 to map version 2015.20, 49 USA states.
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