Yes. There are two methods for you to update the book.
Method 1 #If the book was uploaded to your server, you need to publish the modified book as HTML again and replace the old HTML.
Method 2 #
Step 1: Click [Upload Online]>Select [Overwrite an Existing Flipbook]. #
Step 2: In the pop-up window, select the book you want to override > click [Select] > click [Upload]. #
We suggest that you can save the project when finishing your book. You can open and modify the project next time or update the existing book by using the method mentioned above.