I have an iPhone 3GS running 4.1 that has never been jailbroken. I need to have a different, louder email alert and I was wondering if there is any way of changing it without jailbreaking, or if I have to jailbreak then how do I do it? I have searched for ages to figure out how to jailbreak my spec but as far as I can see it is not possible. Any help would be appreciated.