Device and method for upgrading UI and firmware programs of automobile instrument

The invention discloses a device and a method for upgrading the UI and firmware programs of an automobile instrument. The device comprises a vehicle-mounted navigation unit, a wireless terminal connected with the vehicle-mounted navigation unit, an automobile instrument unit, a vehicle-mounted panel unit capable of being directly connected with external equipment, and a switching unit controlled by the vehicle-mounted navigation unit or a control inspection unit in the automobile instrument unit, the switching unit comprises a channel switching module, and the channel switching module is controlled by the control inspection unit to connect or disconnect the communication relationship between the vehicle-mounted navigation unit, the automobile instrument unit and the vehicle-mounted panel unit; the data communication module is used for receiving the data file sent by the vehicle-mounted panel unit or the vehicle-mounted navigation unit and forwarding the data file to the automobile instrument unit or the vehic