I'm using this video: http://www.youtube.com/watch?v=dJYPEr8ASf4 1.) Will that video above work? 2.) Do I need to have a sim card installed to unlock the device. (I lost my sim card Tray and recently ordered one today) 3.) After I unlock will I be able to update/restore the iPhone via iTunes if I want too? 4.) Also, after I unlock the device can I Jailbreak it too or will it do that with the unlock? Thanks and sorry for all the questions today guys appreciate the help!