I activated my iPhone using Independence and an older ATT SIM card. I am still using ATT service. If I've only activated through independence and not jailbroken, or hacked my phone in any other way, do I still need to worry about my phone getting bricked by firmware updates? I really want to upgrade to the new 1.1.3, but I need to make sure nothing would go wrong. I only use the false activation to keep my old plan on ATT. If someone could answer my question, it would be greatly appreciated. Thanks.