How to Update Gravatar Comments on WordPress

Comments
1. Visit the blog on which you have left a comment, and go to the page that your comment is on.
2. Scroll down to the Comments section, located directly below the main content of the post. Find your comment.

3. Locate the 'Edit' link next to the comment. If it is not present, either you are not logged in to the site or the site does not allow readers to edit comments. Go to the site's log-in page, enter your username and password, then try again. If the edit link is not present, use the contact link to ask the site administrator to edit your comment for you.
Gravatar Image
4. Go to gravatar.com and enter your username and password in the text boxes below the 'WordPress.com user? Log in!' heading. If you did not sign up to Gravatar with your WordPress account, use the 'Log in/Sign up' link at the top of the page.
5. Click the email address associated with your Gravatar. This will change the Gravatar for all sites you have commented on with this email address. If you want to change your Gravatar only for comments you post in the future, click 'Add a New Email,' and type in a new email address. You'll be able to use the same name when you leave comments. Type this new email address instead of your old one.
6. Click 'Add a New Image,' then select how you want to upload the image. You can upload one from your computer; use the URL of an image already online; capture an image from your webcam; or browse your list of previously uploaded images. Select the option you want and follow the prompts. Once complete, your Gravatar image will be updated.