I have several copies, the Ethiopian copy is probably the only one that still exist. There were Greek copies that the Apostles used, Jude quoted from it & Peter alluded to it. The dead Sea Scrolls have fragments of so proving the Essenes had copies.

Also there is the Book of Jasher, Jubilees, Book of the Giants from the Dead Sea Scrolls (Large amount of fragments, but enough the see the story line.