Kinda confused (as always). I'm stuck on 7.1 and thought I didn't have Sentry Mode until I get the 16.x update. I don't see where to select it in the menu. I have a USB and pulled thinking I could see Dashcam. However it seems the clips are in a row and have all the time I'm parked and driving too. Looks like it is recording all the time on 7.1? I thought you even had to select Sentry Mode every time you got out of the car and was first available on 12.x (or something higher than 7.1). And that it only recored all the time on 16.x.
I thought the dash cam recorded constantly, but overwrote anything older than an hour. The exception is any clips you manually save by touching the icon, or any clips saved by sentry mode go into a SavedClips subfolder and are never deleted/overwritten.