Disclosed is a system including at least one network interface; at least one processor operatively connected to the at least one network interface; and at least one memory configured to store a plurality of versions of software updates for a group of mobile devices and operatively connected to the at least one processor, wherein the at least one memory stores instructions causing the at least one processor, when executed, to receive a request for providing a list of software updates from an external server through the at least one network interface, to generate the list of the software updates, the list including information on a plurality of versions of the software updates, to provide the list to the external server through the at least one network interface, to receive a request for providing a selected version of the software update from one of the mobile devices through the at least one network interface, and to provide the selected version of the software update to the one of the mobile devices through the at least one network interface, the selected version not being the latest version. Other embodiments are possible.