You got a tethered or untethered JB?
If you dont have SHSh's saved for the firmware you want to restore/update to you wont be able to update to anything but the latest firmware thats out right now. 4.0
You got a tethered or untethered JB?
If you dont have SHSh's saved for the firmware you want to restore/update to you wont be able to update to anything but the latest firmware thats out right now. 4.0
He'd have to JB it first on the stock 3.0.1 that he's in.
Then he can update to custom 4.0 IPSW created with pwnage.
Maybe JB it first with blackrain and then go thru the pwnage 4.0 IPSW.