ON-BOARD UPDATE SYSTEM, ON-BOARD UPDATE APPARATUS, ON-BOARD DEVICE, AND UPDATE METHOD

摘要

Provided are an on-board update system, an on-board update apparatus, an on-board device, and an update method, updates the on-board device without limiting the use of the vehicle for the convenience of the user. An on-board update system for updating a program or data stored in a storage unit of an on-board device transmits an update program or data stored in an update storage unit to the on-board device, and interrupts the transmission of the update program or data to the on-board device depending on the circumstances around a vehicle. The on-board device includes, in its storage unit, a first storage region in which a pre-update program or data is stored and a second storage region configured to store an update program or data. The on-board device restores the execution of the pre-update program or data if the transmission of the update program or data is interrupted.