Backup & reset
Press 
(HOME), then select [All Apps] - [Settings] - [Backup & reset].
Hint
- You can also open [Settings] by the following procedure.
Press (HOME) and 
(MENU), then select [System settings].
Back up my data
Check the box if you want to back up application data and other settings for the Smart Stick to the Google servers.
Backup account
Back up your account information so that it can be restored later.
Automatic restore
Restore your account information using the backup.
Check the box to restore backed up settings and other data automatically when you reinstall an application.
Factory data reset
Resets all settings to the factory defaults.