OTA MASTER, UPDATE CONTROL METHOD, AND NON-TRANSITORY STORAGE MEDIUM

An OTA master configured to update one or more software on in-vehicle device includes one or more processors. The OTA master is configured to connect to an in-vehicle network including the in-vehicle device and communicate with an OTA center over a network. The one or more processors are configured to, out of software groups each composed of a combination of the software of the in-vehicle device, acquire configuration information on the software group in which a change has occurred in a configuration of the combination of the software. The one or more processors are configured to send the acquired configuration information to the OTA center.