Software upgrade problem on dishtv kaon stb

kuldipgnr

I am having dishtv connection with kaon stb ksc100mco in that stb[i. e old sw yellow colour] i was able to add transponders both c-band and ku-band. But after sw upgrade [i. e blue]i am not able to add tps and c-band tps. I heard that it is possible to change sw so i seached on the net and got the sw v. 3. 0 ,sw loaders kup230,kup300,kup3. 1, bootloaders etc. In my laptop there is no rs232 port only usb so that i got usb to rs232 serial cable and connected pc to stb with null modem cable[2-3,3-2,5-5]switch off stb open the loader select port select file switch on stb but not able to change sw when i switch on stb the following message displayed on loader [com port off enter key to reconnect] but term log is comming from stb. I dont know what to do i am in a remote area so dear friends please help me how to upgrade my stb by pc? if only jtag there no pins on the board help me please

dspdsp

you will have to downgrade by means of STB to STB transfer. First need to find STB which is not updated and then connect it with your STB and downgrade.

kuldipgnr

Thanks very much for the quick reply dear dspdsp.That means upgrade cannot be done by pc?why?and searching an non-updated stb its a very difficult job for me i am in a remote area so please help me a alternate solution by pc please

dspdsp

Upgrade can be done using PC, provided
1. JTAG pins are known
2. Proper programmer is available
3. Image file ( binary ROM file ) of the older firmware is available

I am not sure whether anyone has done downgrade with JTAG and older ROM file.

kuldipgnr

thanks for your reply dear dspdsp. without changing the sw can we add c-band frequencies with the help of channel editor,set edit,cfg kaon utility programmes?is it possible?waiting for your kind reply thank you

dspdsp

I don't know about Kaon receiver, but for zenega it is possible to edit (not add ) just home tp.
Search through the forum to find the answer, someone must have done it for Kaon.