Before disposing of your system or buying a replacement, first delete your Sony Entertainment Network account and other information by performing the procedures in this section. This helps you to protect your personal information and prevent its unauthorized use by third parties.
Backing up your information
As necessary, back up data from your system to a device such as a PS3™ system or a computer. This allows you to restore the backed up information to a new PS TV system. Use 
(Content Manager) to backup and restore data on your system.
Deactivating your system
You cannot deactivate your system after you dispose of it. Because the number of systems that can be activated for an account is limited, deactivate your system before disposing of it.
While you are signed in to PlayStation™Network, select 
(Settings) > [Start] > [PlayStation™Network] > [System Activation] and follow the screens.
Restoring
Restoring your system restores settings to their default values and deletes all data from the system memory.
Select (Settings) > [Start] > [Restore] > [Restore This System] and follow the screens.