hello1231

dunno this can help you or not~~

Start SmartTV
Press the RED "A" button on the remote, which will log you in.
Press the BLUE "D" button for SETTINGS.
Select Account Management
Select Register Service Accounts

You'll see THIS SCREEN pop up.



Select FACEBOOK, and click ENTER.
You'll have the option to select Register, Deregister, or Edit. Choose EDIT.

You'll see THIS SCREEN pop up.



Enter in your new information, and your Facebook information will be updated.