Disclosed are a method system, and device of updating local software. The method comprises: broadcasting a broadcast message for updating local software to multiple client ends; determining whether a response message about existence of the update software is received, updating local software through the client end sending out the response message, or through a remote server if no response message is received. Accordingly, restriction on transmission speed by OTA server in software update process and congestion in data transmission process can be avoided, thus improving downloading speed and facilitate a simultaneous update of software for a mass of devices.