A:Answer If 60hz is native to your TV then there is no increasing/decreasing that refresh rate.
Also, fellow gamer, the jump to 120hz is all but unrecognizable by the human eye. I spent big money (in my eyes) to make that jump, only to be disappointed. Don’t chase it.
I have 2 of these HDMI. The 120hz marketing is just saying what it is capable of.