I got an iPad from a good friend, that he got from some family members. It has a bunch of audible books on it and a few apps that were purchased, but not by me. If I apply the update to it am I going to lose all of that stuff? It gave some sort of warning when I tried to sync the apps/books in iTunes, and it said all the apps would be taken off the iPad. Is that true? Is there a way to manually drag these items off the iPad to my Mac, and then put them back on the iPad? Thanks for the help.