I installed iOS5 on my iPad 1 and got Cydia working fine. But after installing one app in Cydia, it hung on the reboot. I decided I would just roll back to 4.3.3 and use jailbreakme.com. I thought if you had a tethered JB, if you had to reboot it would work just not the JB stuff. Is that the case? Or do you have to have a PC around to hook it up to to boot?