Originally Posted by themind24
I also installed the firmware afresh but the problem persist...what can I do?!
When did you do that? This should be your next step immediately after formatting the device.
And if really nothing helps: send the Opus back. Ask for a replacement or a refund, maybe there is something wrong with the hard disk of the Opus.
And did you create a folder "ebooks" to store your books in?
Welcome to Mobileread, themind24!