Cannot downgrade ipod touch 4 from 6.0.1 to 5.1.1.

Hi, I have a ipod touch 4 with firmware 6.0.1 I am trying to downgrade to 5.1.1 I have redsn0w_win_0.9.15b3 and both firmwares downloaded. I am following "How to Downgrade Your iPod Touch 4G From iOS 6.x to iOS 5.x (Windows)". After step 13, when it says "waiting for your device", my ipod touch have apple logo and a status bar. it stays there for about 10 seconds and then redsnow gives me error "Service wouldn't start". There is no error code. I have tried to add the following to my hosts file, but still same thing: 74.208.10.249 gs.apple.com One more thing, I just bought it, so I am not sure if 5.1.1 blobs are saved on Cydia, so I selected "use remote blobs for restore" and then it downloaded something and ramdisk etc without any errors. Any help will be appreciated. Thanks Abdul