This jailbreak is pretty simple as well. I AM MISSING A FILE BECAUSE I CANT FIND ANYWHERE TO DOWNLOAD IT. iF ANYONE HAS THE JAILBREAK.BAT FILE FOR JAILBREAKING 1.1.2, COULD THEY PLEASE SEND IT TO ME OR UPLOAD IT.
Firstly what you need to do is jailbreak 1.1.1 (see my guide here).
Then install something called OktoPrep from Installer on your iPod Touch/ iPhone and then press the home button for the iPod Touch/ iPhone to soft-reset.
Then plug it into iTunes and shift+click update and navigate to a 1.1.2 firmware that you have downloaded (download here). Let it install.
After that, download the jailbreak.bat file (missing at the moment) and click Jailbreak. Let it do its thing (takes around 10 mins). Eventually it should say “Done, Reboot your Device”, it should automatically reboot.
You know have a jailbroken 1.1.2 iPod Touch/ iPhone.