Instructions
Perform a system update on the Nintendo DSi if your system does not have the latest version of the menu software. If you have never performed a system update, open the "System Settings" menu from the main DSi menu screen, and select the "System Update" option on the fourth page of settings options. Follow the on-screen prompts, and accept the agreement to begin downloading the update.
Select the "Camera" option from the main DSi menu screen to access the camera and photo features.
Choose the "Albums" option to access the pictures you have taken.
Scroll through the pictures by dragging them to the left or right with your stylus until you find the photo you want to upload to Facebook.
Press the blue "F" icon on the picture you want to upload; this is the icon for Facebook uploads.
Select the "Yes" option with your stylus when asked if you want to connect to the Internet.
Press the buttons to enter your Facebook email address and password, typing the information using an on-screen keyboard and your stylus.
Tap the "Login" button after your email address and password are entered.
Tap the "Yes" button to confirm that you want to upload the photo to your Facebook account.
Wait while the DSi uploads the photo, and press the "OK" button upon completion to return to the "Albums" listing on your Nintendo DSi.