Could this be a hardware issue? I did the IPSW thing as outlined above. iTunes begins to go through the process and then I'm given: "The iPhone "iPhone" could not be restored. This device isn't eligible for the requested build." Is it possible I hosed up my hardware somehow during my battery...

I replaced the battery in my phone today (very carefully). When I rebooted the phone it told me to plug it into iTunes. I immediatley noticed there was no serial number. When I click on Restore iPhone it goes through some of the motions but cannot restore it for various reasons (I've gotten...