I recently bought a second hand TomTom Go 50 it was demonstrated in store and was working perfectly, It had first been purchased in Sept 2014, I bought it Aug 2015 all was great it performed well and I was really pleased with it, however I noticed it had never had the software or the maps and cameras updated ever, so I downloaded My Drive from the TomTom website to update software ect. After the update had completed the device said NO MAPS FOUND. I tried a factory reset to no avail so I called the help centre who took remote control of my laptop but could not restore my maps and advised me to send the device free of charge to the repairs dept.which I did, they acknowledged receipt of the satnav wed 10.09am and said they were going to look at the defective Item at 2.00pm they informed me the defective Item had been repaired and serviced and the cost was 109 euros and if I did not pay within 14 days the item would be returned as they had received it with no maps.
Looking online this has been a ongoing problem since about 2011 and TomTom have done nothing to rectify the software problem.