US Patent 9430225 Software update service method and apparatus for mobile terminal

A software update method and apparatus for a mobile terminal is provided. A delta generating server determines a plurality of available update versions for a currently installed version of a target software of the mobile terminal and transmits available update version information indicating available update versions to the mobile terminal. The mobile terminal receives the available update version information from the delta generating server and displays the available update version information. When one of the update versions is selected, a delta file for updating the target software to the selected version is generated by the delta generating server and is downloaded to the mobile terminal.