: A one-time internet connection is often required on the PS4 to enable the BD Live feature and Blu-ray playback if it hasn't been used before.
: It usually houses the .iso file needed to burn a custom Blu-ray disc . BD_BD.rar
: A .rar file is a compressed archive created by WinRAR. You will need a tool like 7-Zip or WinRAR to extract its contents. : A one-time internet connection is often required