| 摘要 |
<p>A method of simultaneously upgrading control files in mobile devices ( 5 ) and remote devices ( 45 ) utlising Cell Broadcast messages. A control file is divided into a number of packets which are sent in the user data sections ( 18, 20 ) of a sequence of Cell Broadcasts messages. The mobile data ( 5 ) or remote device ( 45 ) reassembles the packets ( 18, 20 ) and loads the control file if it passes error-checking tests. The control file may be operating software, operational parameters, control commands or SIM card files. The remote device may be a monitoring device, a consumer appliances, a vending machine etc. The method provides simultaneous "Flash upgrades" to multiple mobile devices in a transparent manner with minimal network overhead. A system for effecting the method and a remotely updatable device are also disclosed.</p> |
