Hi, I am new to the forums and a new TomTom Start 50m owner.1st gps I have ever had. I did all the updates and back-ups.Well lo and behold I had a HDD problem with my computer and lost the original back-up. I have since did another and now I keep a copy on a thumb drive for safe keeping. My 50m is working great Just thought I'd share the idea about backing up your back-up.