I have the origianl conax card for St1 ku Conax card and can view with my decoder (Magix firmware ver 2.3.9) but after 20-30 minutes, it will stop and screen turn blank black and i had to switch off and on again the decoder to continue, but same happen again . Is it due to the Firmware version( too old ) or the CAM ?? (The cam is meant for Ir2 and V2 as inform by the seller). Can Any expert to offer help, thanks in advance.;)