Panasonic S60 Input Commands

Discrete input commands work great over IR but not over IP with my 2013 Panasonic S60 Plasma TV.

The TV is running the latest firmware version 2.211.

I am also unable to select the Antenna/Cable input whereas every other input command react properly.

Anybody else having problems configuring a Panasonic S60 TV ? Could the S60 use a slightly different command set than the rest of the 2013 higher-end Plasma line-up ?