Have an iPhone with the 4.0 Developer preview on it and want to go back to 3.1.3? I show you how in this How To video.
You can download the files you need here: http://www.maclife.com/article/howtos…
Thank you to all who have subscribed to my Youtube channel. I really appreciate it.
Thanks for this, my iPhone had become unusable after I upgraded it to 4.