I have unlocked 2.2.1 with quickpwn, but having a problem with my touch screen (upper row partially working), I cannot install openssh with cydia (cannot press the install button!) in order to add the touch sensitivity option.

Is there a workaround for this? Can I create a custom firmware including openssh with 2.2.1 or do I have to downgrade to 2.0.X so that I can use winpwn to do that? Is it safe to downgrade?

Thank you.