Hi guys when I use Jailbreakme.com to jailbreak my iphone 4 which is on 4.0.1 it jailbreaks the device fine and then I get the "Upgrade essential" notification pop up and I click upgrade essential and "install" then when installed it says "Reboot Device" then it reboots and i'm stuck then at the apple logo? It's happened twice now and on my latest iphone 4 i had no other choice but to restore to 4.0.2! But i'm getting a replacement from apple because it had dead pixels (it was sent straight outta the factory in china too in brand new retail packaging...what a joke eh?!)

How can I get around this problem PLEASE PLEASE PLEASE HELP!