So. Last Saturday my 32GB 3GS was replaced and I LOVE having a new iPhone However, it came with the 3.1.3 firmware. I know the Spirit Jailbreak came out, but I don't have a ton of knowledge on this. I've read it can't unlock though. My old iPhone WAS jailbroken/ unlocked and running T-mobile before I restored and took it in. Long story short, can I somehow downgrade my 3.1.3 iPhone to then get it back to 3.1.2 so I can Jailbreak and unlock it so I can FINALLY use it as a phone again? Hope I can get someone's help with this. THANK YOU ALL!