Hello there the stuff written on top is for 2011 and 2012 models. Basically pre 2012 models.
As they don’t have WOL you would have to wake your TV via connected device like Bluray player that supports LAN (for WOL.)
You then wake the Bluray player that in turns wakes the TV through Simlink.
Then you can use the above work around to chance channels turn volume up and down or turn it off.
I posted more key commands here