Difficulty downgrading from 4.0

[chainprayer]

With my developer account I have access to the 4.0 OS which I installed 2 days ago. After seeing what it has to offer I decided to switch back to 3.1.3 through a restore. I held alt, clicked restore, and found the 3.1.3 package. After running for about 5 minutes I get this error...

The iPhone "iPhone" could not be restored. An unknown error occurred (1015).

It then continues to say that my phone is in recovery mode. My phone now has the connect to iTunes button.

Any ideas on how I can bring my phone back to life? I have the most recent version of iTunes installed.

Thank you!

 

[aristobrat]

I thought that 4.0 updated the baseband so you couldn't downgrade?

 

[chainprayer]

Is this true? Am I stuck with 4.0?

 

[aristobrat]

Maybe not? http://bit.ly/ceDziq

 

[chainprayer]

thank you so much aristobrat! got my phone back up in minutes

 

[aristobrat]

Cool beans, glad to know it can be done!