use seas0npass on 4.0 to jailbreakwith 4.0 custom restore.ipsw ?

I have a 4.0 apple tv and no matter what I do I cannot get it to restore any custom.ipsw for 4.0

Can I use seas0npass but point it to my custom.ipsw for the file ? so I have an untethered jailbreak ?

 

Thanks