Sony Announce Optional Firmware 3.21 Will Disable "Install Other OS" On Original Playstation 3's

Sony have announced that the upcoming 3.21 firmware update for Playstation 3's will remove the "install Other OS" feature from the original Playstation 3's (PS3's that look like the left model in the picture), Not the Slim Models as they don't have this feature. this update is optional, but those who decide against installing the update will not be able to:

• 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.

Sony have also warned that any information on the Other OS partition on the HDD will not be accessible so users will have to backup any files before updating their consoles.

From EU Playstation Blog