How to Debug a First Beta Unit

In the first hundred or first thousand units out if they report back to a cloud server I have had them aggregate why they reset and then chase down the boot causes. In fact there was one in the early days of Fitbit where I actually called the person and said okay at three o'clock your Fitbit did some weird reboot and I don't understand. So do you know what happened and the answer was really surprising that was when the Fitbit went into the dryer. Covered by warranty right just RMA the unit out next time. Yeah this has been good stuff we're talking a lot about sort of the manufacturing side of pieces or even the opposite of things. How does that