Start at about 11 minutes in and it will explain why there is an issue. This will mostly be limited to hardware devices that are stand alone. So the old TomTom's and Garmin GPS devices that have not have updates for a few years. The failure could be limited to just inaccurate dates and times displayed on the device to total device failure. There is no way to know for sure but if you have one and plan to take a trip and want to use it after the 6th I would suggest testing it out before heading out.