Patent ID: 7373106

Claim:
A method of updating operation system software in a mobile terminal device by transmitting update data from a base station to the mobile terminal device comprising the steps of: dividing the update data into a plurality of data sets by the base station; transmitting the plurality of data sets by the base station with sequential pointers for each of the data sets to the mobile terminal device; receiving the data sets with the sequential pointers by the mobile terminal device; storing normal operation system software in a first storage area of the mobile terminal device; storing the received data sets by the mobile terminal device in a third storage area of the mobile terminal device separate from the first storage area; if a transmission of update data from the base station to the mobile terminal device is interrupted, then after verifying that the mobile terminal device is connected to the base station, confirming a next pointer for a remaining data set to be received and transmitting a data request with the next pointer by the mobile terminal device to the base station to re-start transmission of data sets beginning with the remaining data set; after all data sets are received by the mobile terminal device, automatically performing an operation test on the update data to verify operation of updated operation system software; and writing update data from the third storage area to the first storage area and resuming normal operation by the mobile terminal device.