Update control apparatus, the update control program, and the update control method

Update control unit (10) includes an acquisition unit (13) and the classification unit (14) and the update processing unit (15). Acquisition unit (13) includes an acquisition unit for acquiring a component information indicating the respective components of the plurality of devices (12). Classification unit (14) calculates the similarity of each component element information obtaining unit the plurality of devices obtained by (13) (12), based on the calculated similarity, the plurality of devices (12) the classified into one or a plurality of apparatus groups. Update processor (15), to the classification unit (14) by a device which is classified into the same apparatus group (12), executes processes for updating the system by applying the method for updating the common program.