| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a phenomenon in which update of unnecessary firmware is performed after updating and restarting firmware in response to a start instruction of manual rewriting, while maintaining the convenience that the firmware is updated automatically. <P>SOLUTION: Existence of firmware for automatic update and firmware for manual update in a portable storage medium M is discriminated, and the start instruction of manual rewriting from the outside is switched to be valid or invalid based on the discrimination result of existence of the firmware for automatic update by discriminating means 4. <P>COPYRIGHT: (C)2008,JPO&INPIT |
