Unable to read adobe digital editions DRM protected files as provided by public library. Library specifically states Auraltek is not compatible. Is there a firmware upgrade?

With the purpose of boycotting the pirate and protecting the benefit of content owners, Widevine developed by Google is an encryption system with DRM. It has two wonderful versions, called Widevine Classic and Widevine Modular. Actually, the Widevine Modular is the successor of Widevine Classic, which is joined the Google DRM scheme used for the on-demand and downloaded content.

If you want to remove the DRM protection in the Adobe files, you can try the first tool in this article. It can help you and free to try.

Article: 5 Best DRM Removal Software for Removing iTunes DRM

Maybe you can have a try of the Adobe DRM Removal software to strip the DRM from your Adobe files.

Refer to the article please. I believe it can help you and give you some advice.

http://www.epubor.com/remove-drm-from-adobe.html