I have a day one 3GS with the 359.3 bootrom (old?). It was running a 3.1.2 until the GM came out. The phone was jailbroken with 3.1.2. The phone has never had 3.1.3 or has been used with Spirit. My question is how do I jailbreak 4.0? Do I downgrade to 3.1.2 and jailbreak straight to 4.0? Do I downgrade to 3.1.2 and jailbreak that, THEN go to 4.0? Do I jailbreak just create a custom IPSW file with Pwnage tool for 4.0 and go ahead in recovery mode? Thanks in advance!