Hi Juan,
as I wrote in MOBILE-700 the ePub files should get the green ePub icon.

Everything works fine with Moodle Mobile. When I put an ePub file into a course folder then the ePub file is synchronised for offline use on iPad or iPhone. When I try to open an ePub in Moodle Mobile then I can open the ePub with another app like iBooks or Book Creator. This is okay but I will see the ePub icon in the folder and not only empty icon items,

All the icons from Moodle should be shown when a specific file is uploaded into a folder or file resource.

Best regards, Ralf