Abstract: A software update device is configured to update software for an in-vehicle control device mounted in a vehicle. The software update device includes an information acquisition unit, an output unit, an execution unit, a communication status acquisition unit, a correction unit, and a notification unit. The information acquisition unit is configured to acquire, from a server provided outside the vehicle, update process information related to an update of the software. The output unit is configured to output consent request information for asking a user whether to consent to the update of the software. The execution unit is configured to execute an update process for the software according to response information that is a response to the consent request information from the user. The calculation unit is configured to calculate an estimate time required for the update.

Abstract: A software updating device includes a controller and a storage device. The software updating device uses software update data of a vehicle for updating the software. The storage device stores a common package including at least the update data, and an identification package including common package identification information assigned to the common package and vehicle identification information that is associated with the common package identification information and that identifies the vehicle. The controller transmits, to a target vehicle subject to software update, the identification package including the vehicle identification information associated with the target vehicle, and transmits, to the target vehicle in accordance with a request from the target vehicle, the common package to which is assigned the common package identification information included in the identification package.