I apologize in advance if this is the wrong forum, but I was told this would be the best place to get help. Recently my friend dropped his iphone in the ocean, and when he bought a new one he gave me this one and said I could have it if I fixed it. I opened it up, cleaned the corrosion off the inside, and bought a new battery and it works fine! I tried to factory reset it via my PC, and the phone is telling me it can't continue without a Sim card, which I do not have. I read that I could use Redsn0w to get past this, but I'm having trouble finding a guide or process that is useful. Is it possible to setup the phone without a Sim card? I don't even want to make calls on it I just want to use wifi for apps and put some music on it.