Patent ID: 7991390

Claim:
A program updating method of a wireless communication terminal that downloads a binary file from a host computer, comprising: determining, if the wireless communication terminal is booted, whether the wireless communication terminal is in a binary file download mode; determining, if the wireless communication terminal is in the binary file download mode, whether the wireless communication terminal has been rebooted by generation of an undesired event; setting, if the wireless communication terminal has been rebooted by generation of the undesired event, a start position for downloading of the binary file according to the number of occurrences of the undesired event; and storing the downloaded binary file according to the number of occurrences of the undesired event, wherein setting the start position for downloading comprises: determining whether the number of interruptions of downloading is greater than a critical value; and issuing an error message and restoring an existing binary file, if the number of downloading interruptions is greater than the critical value and erasing the binary file downloaded up to the point of interruption of the downloading.