I'm thinking it has something to do with my usb port. I hadn't used it for like 5 months then updated it for the pre heat function about a week later it started acting weird with the charging idications. Now it will connect to the update program when it chooses to. If I plug it in and out enough it will stop the indications for about 20 mins then resume to flashing. It still fires but it drains my battery a bit more than usual