Instructions
Log in to your account.
Push the "Xbox" button on the controller to open the "Guide." A menu appears.
Go to "Settings."
Select "Account Management." The "Guide" menu disappears and a new menu opens.
Go to "Your Memberships."
Select your membership. It will either be "Gold" or "Silver."
Choose the option you want to change. "Modify Membership" allows you to change from a year subscription to monthly. "Change Payment Options" allows you to edit current credit card information or add a new card. "Redeem Code" opens a field prompting you to enter your subscription card's 25-digit code.