Just wondering if anyone has had problems with downgrading their iPhone 3GS baseband from the iPad 6.15.00 to 5.13.04? This is for the old bootrom owners that had to do the iPad baseband to jailbreak and unlock to use iOS 5. Now that my iPhone is unlocked by AT&T I no longer need to jailbreak. However ever since I used the iPad baseband my battery life has been horrible. Since it is now possible to downgrade the baseband. I was wondering if anyone has taken the plunge. My concerns are even worse battery life or loss of functiionality. I forget what my original baseband was. I do know it wasn't 5.13.04 which seems to be the only option. Thus my concerns. Also given how much trouble every jailbreak has been. I just want to get one last hack out of the way so I can just get my battery life back and get iOS updates from Apple.