freeview or freesat?
If freeview, plug normal roof ariel into the back of the box, rf in.
Press Menu and select Setup -> Searvice Searching -> tuner configuration -> tuner b and then change Tuner Type to DBV-T2 and press the green button to save.
Now press the exit button once and then select Autobouquets -> providers and enable the freeview and set the relevant options and then press the green button to save
Now run a scan