a document criticizing the program's accuracy and conclusions; specifically that the faults were evidence of a manufacturing defect. The document also complained that the report had been inappropriate in tone and might damage Sony's brand name. Software System software Sony has included the ability for the operating system, referred to as System Software, to be updated. The updates can be acquired in several ways: If PlayStation 3 has an active Internet connection, updates may be downloaded directly from the PlayStation Network to PlayStation 3 and subsequently installed. Systems with active Internet will automatically check online for software updates each time the console is started. Using an external PC, a user may download the update from the official PlayStation website, transfer it to portable storage media and install it on the system. Some game discs come with system software updates on the disc. This may be due to the game requiring an update in order to run. If so, the software may be installed from the disc. The original PlayStation 3 also included the ability to install other operating systems, such as Linux. This was not included in the newer slim models and was removed from all older PlayStation 3 consoles with the release of firmware update 3.21 in April 2010. The functionality is now only available to users of original consoles who choose not to update their system software beyond version 3.15 or who have installed third-party, modified and unofficial versions of the firmware instead. Graphical user interface The standard PlayStation 3 version of the XrossMediaBar (pronounced "Cross Media Bar" and abbreviated XMB) includes nine categories of options. These are: Users, Settings, Photo, Music, Video, TV/Video Services, Game, Network, PlayStation Network and Friends (similar to the PlayStation Portable media bar). TheTV/Video Services category is for services like Netflix and/or if PlayTV or torne is installed; the first category in this section is "My Channels", which lets users download various streaming services, including Sony's own streaming services Crackle and PlayStation Vue. By default, the What's New section of PlayStation Network is displayed when the system starts up. PS3 includes the ability to store various master and secondary user profiles, manage and explore photos with or without a musical slide show, play music and copy audio CD tracks to an attached data storage device, play movies and video files from the hard disk drive, an optical disc (Blu-ray Disc or DVD-Video) or