Downgrade from iOS 4.0.2 to 4.0/4.0.1 on iPhone 4, 3gs, or 3g ...

John

ue, 17 Aug 2010 03:45:47 GM

Step 2: Once you have downloaded 4.0.1 connect your iPhone to your . iTunes. and put your phone into DFU mode by holding the home (circle) and sleep (top) button for 10 seconds, and then letting go of the sleep button after 10 seconds until ... There is no way to . downgrade. all the way down to 3.0. If you have any more questions please e-mail me at for a quicker response. John. david on August 24th, 2010 . 9. :44 am. Hi John, I have just purchased the iPhone4 ...