I have a jailbroken ATV2 ( not via seasonpass). It is running 4.2.1 and so I tethered booted it. I can ssh to it and so on. I would like to to install ATVFlash beta 2 but I am unclear as to whether or not it will require a complete restart of the ATV2 and hence that whole tether boot thing again. Or just it just require a restart of the GUI?