How can I turn off verification in TWRP - I see many descriptions that say turn it off in settings, but there's no way to do that that I can see. If I boot into "recovery" mode the touch screen does not work and the up-down buttons do not provide a "settings" option. Also, I have installed the "Official TWRP App" as a regular application, but it also does not have any settings like that. I suppose it's possible that I need to be rooted to have those settings, but that's what I'm trying to do - install SuperSU -- which fails because the install fails the verification test. Any advice?