I have a 3g iphone, version 4.2.1 and ipad baseband and yesterday I clicked reset all settings and now it's stuck. I know the problem is that I have to downgrade and stuff but every thing i look at says to put it in DFU or restore mode which I cant do because my iphone won't turn off no matter how long I hold the sleep/home buttons. :/ what can I do ? p.s. im a newb at this sort of stuff.. so if you can help me out and give me a detailed description, that'd be great!