Interrupting the installation can cause your system to be damaged. Do not turn off your system during the installation.Do not install system software soon before or soon after a power outage.Any of these actions can void the system warranty and affect your ability to obtain warranty services and repair services from Sony Interactive Entertainment. If you download or install update data from a different source, by a different method, or on a system that has been altered or modified in any way, the system might not operate properly and might not be able to install the official update data. Do not download or install updates by methods other than those described in the system documentation or on this website. Do not download or install the update using data other than the official update file provided online by Sony Interactive Entertainment.