A multifunctional device extracts identification information items from received device-cloning file data items and determines whether a data restoration process is a backup process or a cloning process based on whether or not a serial number in the identification information items is identical with a serial number in a multifunctional device having received the device-cloning file data items. In the backup process, specific information items and general information items are restored. In the cloning process, only general information items are restored.