Hi, I have a Nuvi 50 LM which is about 1 year old. I have been trying to update the USA map installed but the only options I can get are to pay for a single map update or to pay for lifetime maps, which I should already have. I have unit ID numbers and serial numbers at hand if these are needed. This is the info from the order/collection paperwork.
Garmin Refurbished nuvi 50LM 5" GPS w/ United States Map Coverage and Lifetime Map Updates
Any help gratefully received.