I'm considering using the PwnageTool on my iPod touch to load the 2.0 beta, so I can get it onto my College's 802.1x network. However I am very hesitant, as it seems to irrevocably change something in the firmware. If I hit iPWNR in the app and it loades whatever custom firmware it needs, and then the 2.0 beta ipsw, and say I don't like it, can I simple go into iTunes, do a 1.1.4 restore and have it EXACTLY as it was before (no changes at all the the firmware)?