Since delivery, my Gravity DE has had a system clock that's four minutes fast. This is a nuisance, and I would like it fixed, but I can't figure out how to do it. I have tried tapping the time display at the top edge of the main screen, because all the other icons up there (bluetooth, wifi, etc.) generate submenus, but not the time. Nothing in the settings menu seems to help either, with Auto Time Zone either off or on. Am I doomed to drive forever stranded four minutes into the future?