VEHICLE CONTROL DEVICE AND PROGRAM UPDATE SYSTEM

The present invention provides a vehicle control device and a program update system capable of effectively suppressing erroneous execution and update of a plurality of control programs stored in a nonvolatile memory. A vehicle control device according to the present invention has a flash ROM and an operation unit. In addition, the flash ROM has a first area and a second area which store a control program executable by the operation unit and a plurality of management data areas which store management data including current program area information representing one storage area of the first area and the second area as a storage area storing a current control program to be executed by the operation unit.