[Dkt01]

My 4th generation iPod handles the decryption of the test PDF fine. I loaded the full manual, but I can't open it until the password is revealed. iOS seems to only decrypt PDFs in iBooks, so if you can't install it, you'll have to wait until the non-password-protected version is released.
I don't mind the small screen for quick reference purposes, but if you plan on reading entire sections, an iPad, computer, or a print copy's probably easier to navigate and read.