Activation 1.1.2, For Windows
Step 1: To activate iPhone 1.1.2, you need an iPhone that has been downgraded to firmware 1.0.2 or 1.1.1.
Step 2: Open the Installer and install OktoPrep (section Tweaks 1.1.1).
Step 3: Open iTunes and click update (do not press restore!) Firmware phone to 1.1.2.
Step 4: Now install iPHUC and Java Runtime Environment (JRE) v1.6 (update 3).
Step 5: After you have installed the downloaded packages, then download and install Jailbreak 1.1.2. Next, run the Windows.bat file and check the Install SSH box and click on Jailbreak. The process will take some time.
Step 6: Next in the Installer, section Tweaks 1.1.2 and install iWorld. We exit, launch iWorld and select your country.
Step 7: The phone is activated.