Hi:
Just your run of the clueless nube looking for some serious help. I looked for a similar threads but did not see one. I'm a volunteer Firefighter @ my local company. I was charged with adding gps units to our Tanker and Rescue units. So being the good little boy I purchased two refurbished TomTom 540xxl's of off Amazon (30 day warranty)
All was well until I tried to update the maps months later, ...