EMPLOYEE0Hi Mi Ko,
I just tested the upgrade for this book and it seems to be working for me as intended. What you need to do is go to "your products" and click on the "print books " tab. When you click on one of your registered books, you will see a button that says:"+Discounts Upgrades". Selecting that will reveal the "$4.99 Ebook Upgrade" option.
Clicking on this link will take you to the cart and auto fill in the discount code for the upgrade.
If you do not see the upgrade code please let me know which title it is you're trying to upgrade.
If you purchased the book directly from us it's automatically registered in your account.
If you've purchased the book from another vendor, you will need to manually register it. To do so, sign into your oreilly.com account and click on "Register Print Books", then enter the ISBN or title of the book you wish to register. It will appear in "your products" under "print books"
If you have any further questions or require further assistance,
You can contact us at:
1-707-827-7019 from outside the USA
7:30 am to 5:00 PST
Or email our customer service department at firstname.lastname@example.org
Customer Service Rep,