Change UE48H6400aw Tuner

[keglevich2]

Hey all,

I'm own UE48H6400aw.
From searching the internet I found that this model should support DVB-T tuner, but when I try to select input method from the Samsung menu I have only Analog signal method.
I have already changed the Local_set to UA_ISL.

Can you confirm that my model should support DVB-T?
Is it safe to change the Tuner method on the "secret menu", after I have already changed the local set?

Thanks