Jailbreak 1.1.2

PC- Jailbreak 1.1.2 Guide

There is a really nice step-by-step guide over at iClarified. This involves downgrading to 1.1.1.

Jailbreak 1.1.2 from Conceited Software:

Visit Conceited Software’s website and download the zipped file. Make sure to read and follow the instructions explained in the README.txt file. This basically downgrades to 1.1.1, jailbreaks, & prepares for upgrade to 1.1.2.