I recently acquired an 830, having used an 800 for a number of years. Having thought I'd started recording a ride, for some inexplicable reason I ignored the great big pause sign on the screen until I was a third of the way round. My recorded activity is therefore incomplete. A long shot, but is there any way of recovering the data I did not record - the device continued to pick up the route that I had programmed/point me round the course?