In case you were left unsure what a "non-serviceable state" meant when Microsoft warned users to avoid the ChevronWP7 updater, we now have further details. The company is in the process of rolling out a Windows Phone update charmingly called 7392, a post-NoDo improvement that does nothing other than fix some bogus security certificates on handsets. With no user-facing changes it's not really something users would probably be pining for -- except that many are now being told they can't get it, and of course we
