A device management system includes an automatic updater that automatically generates an automatic F/W update task in accordance with an automatic F/W update plan which is a setting for automatically generating the automatic F/W update task as a task for updating firmware of an image forming apparatus. The automatic F/W update plan includes specifying of firmware for update and a mode in which the update is fully executed on all electronic apparatuses of a target of the software update. The automatic updater automatically generates the automatic F/W update task in accordance with the automatic F/W update plan at a specific timing in a repeat manner.