Communication terminal software updating method, communication terminal, and software updating method

摘要

The method of the present invention is an update method of a software which is stored in a rewritable non-volatile memory of a communication terminal and is directly executed. The method comprises: an update file transfer step in which an update software is transferred to the communication terminal from a software management server for managing the update software which is to be stored in the rewritable non-volatile memory as an update file, and the update file is stored in a rewritable volatile memory of the communication terminal; and an update software rewriting step in which the software, which is stored in the rewritable non-volatile memory and is directly executed, is rewritten with the update software stored in the rewritable volatile memory as the update file after the update file transfer step.