PS3 Firmware v4.21 is a minor update that improves the stability of the system software.

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Settings

• Under Settings >  [Power Save Settings] > [System Auto-Off], you can now set the amount of time until the system automatically turns off for [Video/TV/Music/Photo] and for [Game/Other Features].
• Under [Date and Time Settings] > [Time Zone], [Samoa Islands] has been changed to [American Samoa] and [Independent State of Samoa].

Games

• Under Games >  [Saved Data Utility (PS3™)], you can now select multiple saved data items, and then either delete or copy them as a group.

Audio

• When the wireless stereo headset (CECHYA-0080) is connected, you can now adjust the sidetone level for microphone audio. Select [Sidetone] under Settings >  [Accessory Settings] > [Audio Device Settings].
• In addition, if you use the Wireless Stereo Headset to watch Blu‐ray Disc or DVD movies on your PS3 system, this system software update will also enable virtual surround sound functionality giving you a superior audio experience.

Other

• The encryption key has been renewed for AACS, the copy protection system for Blu-ray Disc video content. If you see a message regarding encryption key renewal during playback of commercially available BD video software (BD-ROM), update the system software to the latest version. The encryption key will then be automatically renewed.

PlayStation Vita system compatibility

• You can now copy content such as music, video and image data, and games and other applications, from the PS3 system to the PS Vita system and vice versa. You can also back up the data saved in the PS Vita system to the PS3 system hard disk. You can also update the system software for your PS Vita system using the network features of the PS3 system.
• To use these features, connect the PS3 system and the PS Vita system with a USB cable. Operations are controlled from the PS Vita system.

Settings

• [Delete PS Vita System’s Backup Files] has been added as a feature under [System Settings].
• Upscaler output and Cinema conversion are now supported for Blu-ray Disc™ (BDMV) content.
• You can now select the items you want to update under Settings > [System Settings] > [Automatic Update]. This feature is exclusively for use by PlayStation Plus members.
• [English (United Kingdom)] and [Portuguese (Brazil)] have been added as options under Settings > [System Settings] > [System Language].

Game

• [PS Vita System Application Utility] has been added.

PlayStation Network

• [Privacy Settings] has been added as a feature under [Account Management].

Games

• Playback quality during use of some PlayStation 3 format software has been improved.