Hello everyone, I have an iPhone 3Gs with an old bootrom. It is updated to the latest firmware 4.2.1. Recently the volume button fell off so I might take it to a Genius bar. It is still under Applecare warranty. From what I read Apple might exchange the phone for me. If that happens, will I regret getting a replacement phone with a new bootrom? I am not currently jailbroken and will not need a jailbreak soon. I only need to unlock the phone when I am out of the country during summer. What is your advice? Thanks!