I followed
This tutorial for downgrading and jailbreaking my iTouch. I'm currently on 1.1.1 and jailbroken. I want to update to 1.1.2 and jailbreak, but to do that I need to install OktoPrep, but it doesn't appear on Installer's list of apps.
I have the newest version of Installer too.
And how do I get to disk mode(access and write files to my iPod manually)?