a)Prepare a twisted RS232C cable(pin-2 to pin-3,pin-3 to pin-2,pin-5 to pin-5). b)Connect the master receiver and slave receiver with twisted RS-232C cable. c)Turn on the master receiver and when its fully started, press "POWER" key to enter standby mode. d)Turn on the slave receiver to begin update. e)The LED of the master receiver will display "H" and blink it. f)Input the the password (Only the first time): 111 : Update software+ Softcam + BMP. 222 : Update Database 333 : S/W and database 444 : copy whole flash except Boot Loader g)During the updating,the LED will display "Rxxx"(Receive the data to the SDRAM),"-ES-"(Erase the flash),then "Pxxx"(Put the date to the flash),at last it will display "-End" h)Tune off the slave receiver,disconnect RS-232C cable and restart it i)If you want to update another receiver,replace it with another slave receiver and turn on the receiver,it will start without inputting password.