Remapping the menu button?

[The Rotten]

I'm using Remote Play to play games on my TV with an Xbox One gamepad. But the problem is that in Big Picture mode the menu button is assigned to the Guide button and when I press it, my Android TV Box quits to the main screen. I contacted support, but they told me I can't remap the Guide button. Is there any way I can reassign the menu to other button or even combination of buttons?

[tintingaroo]

Not so great but should work: keep pressing B (i.e. Back). It'll eventually end up opening Menu.

Does the TV box quit to main screen when you combo Guide with another button (e.g. Guide + A, or other way A + Guide)? If it doesn't then there should be another way to get Menu opened.