Two days ago I purchased a black 32gb 3gs iPhone, MC model that the owner told me was jailbroken, unlocked, and on version 3.1.2. I met him to purchase the iphone but when he showed me the iphone, it was stuck at the apple logo and had been stuck for an hour. He told me that he had reset all content and settings from the iphone settings menu. Apparently because the phone had been jailbroken and is a 3gs phone, it "broke" when he did reset all content and settings. I did not know this and purchased the phone anyway, thinking that it was just taking a long time. I went home, plugged it into my computer, and put the phone into DFU mode. I followed this guide: Jailbreak and Unlock iPhone 3.1 FAQs | Redmond Pie ws-anu759/ I'm on WINDOWS XP. I shift-clicked restore and used the custom restore, but it didn't work, giving me error 1600 and saying that an unknown error occurred. I do not know the iphone's ECID. I do not want to update the iphone to version 3.1.3. I want to unlock and jailbreak the iphone. Is there anything I can do?