Garmin Nuvi 255W

munruss

Golden Member
May 4, 2001
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Hey everyone. I have a Garmin Nuvi 255W. I have the 2014 maps file gmapprom.img. The file is too large for internal storage. So, I installed an external SSD card. The file fits fine on there, but how do I point the GPS to load the maps from the external storage?

Thank you.