......read certain PDF and Epub files on it?
I have PDF manuals for my Yamaha MotifXF7 synthesizer, Yamaha AW1600 Digital Recorder, and one on Photoshop Layers (to name a few), that I simply CANNOT get to show up on my IPad. They are there, in the iTunes library window, but that's it. I have tried syncing and re-syncing a number of times, but no amount of effort - on my part - will get these files to show up.
So, is Jail-Breaking the answer?