The present invention relates to forcibly downloading a program in a mobile communications terminal. Preferably, a memory of the terminal is divided into a boot binary region and a main binary region. A boot program and a main program of a binary program are then downloaded to the boot binary region and the main binary region, respectively. Whether the downloading of the binary program is successful or not is then recorded in a particular address of the memory. After, it is determined whether to enter a forcible download mode by checking a value of the particular address.