A method for configuring a re-configurable radio terminal through a communication network operating according to a communication system, wherein the radio terminal is configured for exchanging information with at least one node of the communication network by using the communicating system. The method is characterized by the steps of associating with the one node of the communication network a server entity configured for using a protocol layer of the communication system and including a set of operating software modules for configuring the radio terminal with at least one set of elements of protocol stack suitable to reconfigure the radio terminal; associating with the radio terminal a client entity configured for using a respective protocol layer corresponding to the protocol layer of the server entity, establishing an over-the-air connection between the radio terminal and the server entity by using the protocol layer, and downloading at least one module of the set of operating software modules from the server to the radio terminal configuring at least in part the radio terminal.