These are the instructions I am following
http://www.iclarified.com/entry/index.php?enid=5432
It says 3.1.4 at the top to they must be right.
Everything is going according to the instrctions until the "connect device t USB" bit.
What is the payload that it is supposed to be downloading to the phone?
When nothing happened, I put the iphone in DFU mode and ran iTunes. iTunes came up with the usual message about recognising an iPhone in recovery mode.
I tried to recover using the new ISPW file but it said it could not be restored. I do not remember the exact message.
I am now trying to restore the iPhone using the official 3.1.2 now. I get as far as the iPhone showing the plug and iTunes logo and I now get the message "The iPhone could not be restored. An unknown error occurred (1611)."
I have tried this twice now and it's the same.