I did the update and everything went well except for my iBooks. I lost all my PDF files. They did not restore. I had over 200 of them. But as I am downloading what ones I can rememeber they are opening up on the last page I looked at. It is like they are still on here but they do not show up on the PDF section under my iBooks. Does anyone know how I can get them to show up or recover all of them? I had tons of them that I did not need to lose.