Greetings to every one in the house.i am a fan from Cameroon and am new in the house. there is a big problem that we have here in Cameroon with this clone strong 4669x11. these receiver just started upgrading when we instal it on the benport side. after the decoder finish upgrading, it will no longer display again on Tv and only dot dot display on the decoder. please is any one in the house know the solution to this thread?