Jimmy,
Congrats on passing the 808 exam. The next exam is the 1Z0-809. Which goes with our
second book. I can't find any references to 1Z1-809 on that page? (If there is, it is a typo). Can you send a screenshot or link to the page where you see 1Z1-809 so I can try to get that correct.
I assure you that the cover of the book says 1Z0-809!