You should also use Garmin's Mapupdater progrom and not Garmin Express or Garmin Lifetime Updater to manage the map update as it will be much easier to update and with less problems. --Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Drive...
It shows the user clearing all user data. Are you saying that you tried it and it doesn't clear the lock data? I don't want to try it because I'd then have to drive to my security location to reset, if it does work. The video is only showing how to reset everything to factory...