To edit your For Sale by Owner listing, make sure you are logged into your Zillow profile. Then navigate to our listing's property page and select the Public view of your listing. You have the option of editing your listing from the blue menu bar at the top of the page, or by clicking the "More" drop-down and selecting "Edit listing, photo and price."
From the Owner view of your listing, select ‘Edit listing.’
To save your changes, select "Update for sale by owner" at the bottom of the page.
Return to your listing's property page to view your changes.
For instructions on how to CANCEL your FSBO, or mark it as sold, please follow THIS LINK.