If someone bricked their phone by attempting an unlock, it seems that they might try to upgrade to 2.0, then when it stayed bricked, they'd claim it was due to the update. I haven't updated mine yet, so I can't give any first-hand info. Hope it goes smooth.

Well, readers would only either have problems or not with their iPhones or not. Thank you for pointing out the only two available options.

I have an original iPhone that is no longer working after attempting to install the 2.0 upgrade. It has never been unlocked or had any non-Apple software installed on it. Now all it shows is the diagram to connect it to the computer, but when I do, I get an error message from iTunes. I can not restore it to the previous firmware version because the tabs which usually appear on the iPhone screen in iTunes do not appear, just a white screen with the word "iPhone" in gray. The phone says "no service" and no bars appear. No outgoing calls can be placed. Incomming calls go directly to voicemail. I assume this is what people mean by "bricked."

You can unbrick you iphone. The process is not straightforward and involves downgrading iTunes and manually installing the older software by putting the device into DFU mode.

downgrading will not fix anything. the problem is Apples servers are so severely hit right now that the iTunes software cannot connect with the activation service to unlock your phone. so after the install of 2.0 was complete it needs to talk to Apple to reactivate the phone which isn't happening. any software change will do that so downgrading will cause the same problem. we just need to wait until the volume drops and the servers are available. I wish Apple had thought about this and released the 2.0 software either yesterday or tomorrow so people upgrading and new purhcases would not clash with each other. imaging the original 5-7 million owners plus thousands of new owners around the world hitting the same set of servers at the same time. its basically caused a denial of service attack.

I'm the guy who posted the "It IS bricked" message, and the phone is now functioning. The phone eventually completed a connection to itunes and finished the installation. Everything that should be there is, and calls work as they did before. Just figured I'd advise anyone reading. Yea.

still no 2.0 here ... itunes tells me 1.1.4 is the latest. :(

I have an existing unlocked Iphone (ziphone was used to unlock it) - anyone know if I can safely upgrade to 2.0 or if it will kill the phone? Any advice please!