A wireless communication terminal and program updating method are provided. The method downloads a binary file from a host computer to update a program. The method includes determining, if the wireless communication terminal is booted, whether the wireless communication terminal is in a binary file download mode or if the wireless communication terminal has been rebooted by generation of an undesired event; and if so, setting a start position for downloading the binary file according to the number of occurrences of the undesired event. Thereafter, even when downloading is interrupted by an undesired event, downloading is performed from a position at which it was interrupted, not from the start position of the file, so that the time required for downloading the file can be reduced.