Faiure to downgrade from 3.1.3 to 3.1.2
I have been told that you cant jailbreak 3.1.3, so i have been attempting to downgrade to 3.1.2 using a JPSW file i got from the blackrain download site.
I am running windows 7 with iTunes version 9.1.1, i have an iPhone 3g, currently running 3.1.3.
When i try to restore my iPhone back to 3.1.2 it goes through most of the steps, but i get the error message 1015 when it should have completed. The phone is then stuck on the 'connect to iTunes' screen. I have tried several Google suggestions like proper MDU mode before restore etc, but nothing seems to be working, any suggestions?