OK.
What satellites are you trying to get?

Here are some possibilities:
Improper connection between the receiver and the tv
Tv set to wrong channel.
Improper setting in the receiver.
Defective cables connecting receiver to tv
Defective receiver.

About all we can suggest for you to do is to reload the firmware. You have checked everything else and cannot find any other problems.

I do need to know what satellites you are trying to get! EB