I am sorry for sounding like a noob but I am just really worried that I will brick my GPS. I have a Garmin nuvi 255w and want to update it to newer maps (it has maps 2010.10 right now) but I do not want to have to keep an SD card in it if I can avoid it. I would be fine installing via SD card if that is needed but would prefer to not need to keep the SD card in the GPS.
Which files should I download to do this the easiest way, and how would I go about doing it? Thanks very much in advance for your help.