i have ios 4.2.6 and downloaded the right app, i've tried 30-40 times and it just wont go, i get DFU mode and hit the jaibreak button and it makes the connect/disconnect noise, the progress bar gets to the end, then the apple logo shows up on the phone and tells me jailbreak failed, i have read all the posts and tried everything, from holding the home button for differnt lengths when it starts trying to jailbreak it to holding it all the way thru and not letting go, if anyone could PLZ give me some idea it would be greatly apprieciated