Hello, I bought a 3g iphone already unlocked and jailbroken last fall. I'm using it on T-mobile. I believe it's running 3.05. I'm not sure what it was unlocked with but Cydia is installed. I would like to update it to 3.1x (probably 3.12) so I can download a couple apps. I've scoured the web and there's a lot of information out there with "if this then that", and "don't do this but". It's confusing. So my question is can anyone give me step by step directions. I use windows. If step by step directions can't be given, does it matter what my phone was previously jailbroken with? If so, how can I determine that? One site seems to indicate that I can use the pwnage tool but then it's mac only? I don't want to lose my unlock. Which is why I haven't previously updated. Just wondering if I can ever update. Thanks.