On my new 46PFL7007H/12 I want to enable JointSpace in order to use the TV Remote app.
The instructions tells to enter the code '5646877223' when watching TV channels.
But I have no TV signal as I use a set-topbox (fed from glass fiber) entering the TV set via HDMI.

How to enable JointSpace in this case?
Why is there no menu option ???

Please help