dsi123 firmware upgrade help please
 

I have a dsi 123 firmware 1.1b31c and i would like to upgrade the firmware to open ci module for a aston 105 cam for astra,I need some help on the connections for using a jtag the jtag i have is jtag - TE which uses a separate supply 6-12 volts is this ok for changing the firmware if so is 1.28 firmware ok to use? i have read through all the info on this site now but I still am not sure were to connect on the main board please can someone help me out,sorry about the writting in english but my spanish is not good enough to write in this forum.