I'm newbie for tablets. Got my N810 today

I installed the sliderotate, and it installed perfectly.
But then I try to run "./install-xrandr-kernel" and it says "/bin/sh: ./install-xrandr-kernell: not found"

Do I need to download the package somewhere?

EDIT:

Ok. I found the problem. I haven't flashed the kernel

Is there a way to flash it with Windows. I don't have a Linux computer