Hi I have a spirit jailbroken iPhone 3GS running 3.1.3, but I believe that I have the old bootrom. my serial number says my iPhone was made in week 25. I've seen the instructions for the 3Gs with the old bootrom: However, since I have the Spirit jailbreak, i'm not sure what to do. Shoudl I restore to the standard 3.1.3 firmward to lose the Spirit Jailbreak? And then use pwnage to jailbreak 3.1.3? Can I do this with PwnageTool 4.0 or do I need a different versions? Then can I use PwnageTool 4.0 to make the IPSW file for firmware 4.0? I'm not entirely sure if I'm thinking about this properly or if I can even do it since I've used Spirit. Anyone have any tips or help for me. Any info or help would be greatly appreciated. Thanks!