PS3 Firmware 3.21 will be available this Thursday. It will disable the “Install Other OS” feature that was available on the PS3 systems prior to the current slimmer models, launched in September 2009. This feature enabled users to install an operating system, but due to security concerns, we’re now removing this feature.

For most of you, this won’t have any impact on how you use your PS3. If you are one of the few who use the “Other OS” feature, or if you belong to an organisation that does, then you can choose not to upgrade your system. However, doing so will mean that the following features will not be available:

• Ability to sign in to PlayStation Network and use network features that require signing in to PlayStation Network, such as online features of PS3 games and chat.
• Playback of PS3 software titles or Blu-ray Disc videos that require PS3 system software version 3.21 or later.
• Playback of copyright-protected videos that are stored on a media server (when DTCP-IP is enabled under Settings).
• Use of new features and improvements that are available on PS3 system software 3.21 or later.

If you currently use the “Other OS” feature and you wish to update to system software 3.21, make sure you back-up any data stored within the hard drive partition used by the “Other OS,” as they will not be able to access that data following the update.

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