VEHICLE-MOUNTED UPDATE DEVICE, UPDATE PROCESSING PROGRAM, PROGRAM UPDATE METHOD, AND VEHICLE-MOUNTED UPDATE SYSTEM

摘要

A vehicle-mounted update device for acquiring the update program transmitted from an external server outside of a vehicle and performing processing for updating the program of a vehicle-mounted ECU mounted in the vehicle, the vehicle-mounted update device comprising a control unit that controls the transmission of the update program to the vehicle-mounted ECU. When resuming the transmission after the transmission is interrupted, the control unit determines that the vehicle-mounted ECU has been replaced while the transmission is interrupted if the identification information of the vehicle-mounted ECU is different from the identification information before the transmission was interrupted, and executes predetermined processing.