To repeat from a previous reply, ADM books do NOT show up in the library. You have to click on the Adobe Books icon to access books downloaded (or copied) through Adobe Digital Editions. At least your reader still works. I foolishly applied the upgrade to make it an ipad and now cannot access ANY of my ebooks (or any of the "enhanced" functions for that matter). In effect, the upgrade turned my ereader into digital picture frame. No help from Pandigital, of course. It's a shame. I really likeed the damn thing before they tried to make it "better".