Enteting bootloader mode by software(ADuC7124)

Hello,

Is it possible to put in the boot mode by software after reset? We know that The device put in bootloader mode after bm pin set Low to reset the device. But we couldn't reach the hardware. That`s why we need to use the software. We delete all code of the flash and reset the device. The device didn't go to bootloader mode. Is there any way to put in boot mode by software?

Thanks in advance