Provided is an electronic device that includes an update-processing unit that updates a control program for the device based on an update program that is recorded on a recording medium. The electronic device includes a USB interface and an update-control unit. Devices can be connected to the USB interface. The update-control unit determines whether or not a device is connected to the USB interface when the power is turned ON, and when a device is connected, waits when it is not possible to immediately determine whether or not that devices is the recording medium.