I had a 1.1.1 unlocked phone which I wanted to upgrade to 1.1.2 I followed the following steps:

Upgrading to 1.1.2
On a 1.1.1 phone, open Installer and install OktoPrep located in the Tweaks 1.1.1 category.
Download the 1.1.2 firmware file from Apple: iPhone1,1_1.1.2_3B48b_Restore.ipsw (right click link and save target)
Connect your phone to your computer and open iTunes on the "summary" page.
Hold down the SHIFT key (Windows) or Option/ALT-key (Mac) on your keyboard while clicking on the Upgrade button (not the restore button!). A file browsing dialog should appear, and you must select the firmware file you downloaded in the previous step.

Instead of upgrading to 1.1.2 I restored to 1.1.2 and now my phone is locked. I tried restoring to 1.1.1 again and running anysim but it didnt work. What should I do. Should I virginize 1.1.1 and start again or do I have the 1.1.2 bootloader now?