Software updating device, software updating method, and software updating program

A software update method for a vehicle that includes a controller, a vehicle-mounted equipment, and a chargeable onboard battery, the software update method comprising:

• acquiring a second software to be used for updating a first software that operates the vehicle-mounted equipment;
• determining whether the chargeable onboard battery is being charged;
• upon determining that the chargeable onboard battery is not being charged, executing a software update that includes using electric power supplied to the controller from the chargeable onboard battery to overwrite the first software with the second software;
• prohibiting charging of the chargeable onboard battery during the software update process;
• and
• prohibiting the execution of the software update process upon determining that the chargeable onboard battery is being charged.

A computer-readable medium comprising:

• a non-transitory tangible medium on which is stored a computer-executable software update program for implementing a software update process for updating a first software that operates a vehicle-mounted equipment of a vehicle,
• the software update program being configured to cause a controller to acquire a second software to be used for updating the first software;
• determine whether a chargeable onboard battery of the vehicle is being charged;
• execute the software update process upon determining that the chargeable onboard battery is not being charged, the software update process including using electric power supplied to the controller from the chargeable onboard battery to overwrite the first software with the second software;
• and
• prohibit charging of the chargeable onboard battery during the software update process;
• and
• prohibit the execution of the software update process upon determining that the chargeable onboard battery is being charged.