NOOK ePub (Barnes Noble ebooks store) has drm protection only supported by NOOK, you need to remove drm protection to read it in other brand ereader or device, here’s how to remove drm directly from B&N epub.
you can download here :
Download for Windows Download for Mac
2. To start removing drm from B&N ePub files, you’ll need to install NOOK DRM Removal, click the Download link. once you’ve download NOOK DRM Removal, install it as normal.
3.Once setup is complete, run NOOK DRM removal, click “NOOK” button to import ebook into file list in converter
4. Click “Remove DRM” button, first times you need to input your Name of B&N account, and credit card number to decrypt drm protection, it is name in B&N account, not name on credit card, full digital number of credit card, this converter don’t keep these information, only to create a key file for next times.
4. if Name and number is correct, converter will remove drm protection, show it message,
you click “Open output folder” to find new drm free ebook file, now you can open your ePub file in any eReader program, share it to your friend.
Barnes Noble Nook
The Barnes Noble Nook (styled “nook”) is a brand of electronic-book readers developed by American book retailer Barnes Noble, The nook ebook format is specific to the nook, can only be read by the nook, it is new EPUB format file with eReader DRM combination created for the nook, that is different with EPUB with Adobe ADEPT DRM