i have a 1.1.2 firmware iphone that i downgraded to 1.1.1 and jailbroke. i downloaded appsnapp from jailbreakme.com, then i went and tried to install BSD Subsystem and Oktoprep, so that i could upgrade back to 1.1.2, but neither of those apps instaled, i cant get any apps to install. can somebody please help me?