I bought 1.1.2 OTB, phone and than I upgraded to 1.1.3 via Itunes, now when I downgrade to 1.1.1 -- jailbreak and run oktoprep and restore to 1.1.2 via holding shift key from Itunes and run windows.bat and hit jailbreak it just says I need to install oktoprep on my phone on 1.1.1 firmware.

I did install OKTOprep on my 1.1.1 jailbroken iphone. and than I restore to 1.1.2 but nothing is happening, I am able to upgrade the phone from 1.1.1 to 1.1.3 all fully jailbroken but then after restarting the phone it stuck at restore mode and says connect to Itunes, any help.