PlayStation 4 system software

Orbis OS

Operating system and user interface of the PlayStation 4 in 1.01 version

Developer| Sony Interactive Entertainment
Written in| C, C++ for PS Plus and online services settings / PPC
OS family| Monolithic (BSD)[1]
Working state| Current
Source model| Closed source
Initial release| 1.01 / November 15, 2013; 12 years ago (2013-11-15)[2]
|Final release|Latest release}}| 13.50 / March 17, 2026; 52 days ago (2026-03-17)[3]
Available in| 31 languages[4]

List of languages

Arabic, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English (United Kingdom), English (United States), Finnish, French (Canada), French (France), German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Spanish (Latin America), Spanish (Spain), Swedish, Thai, Turkish, Ukrainian, Vietnamese

Update method| Direct download
PlayStation 4 Format Blu-ray Disc
Download to USB
Platforms|

* PlayStation 4 (original)
* PlayStation 4 Slim
* PlayStation 4 Pro

Kernel type| Monolithic with dynamically loadable modules
Default user interface| PlayStation Dynamic Menu[5]
Preceded by| PlayStation 3 (system software)
Succeeded by| PlayStation 5 (system software)
Official website|

* USA
* EU
* Japan

The PlayStation 4 system software is the updatable firmware and operating system of the PlayStation 4. The operating system is Orbis OS, based on FreeBSD 9.

## Contents

* 1 Technology
* 1.1 System
* 1.1.1 GNM
* 1.1.2 PSSL
* 1.2 Graphical shell
* 1.3 Augmented Reality
* 1.4 Remote Play and second screen
* 1.5 Social features
* 1.6 Internet features
* 1.7 Multimedia features
* 1.8 Backward compatibility
* 2 History of updates
* 3 See also
* 4 References

## Technology

### System

The native operating system of the PlayStation 4 is Orbis OS, which is a fork of FreeBSD version 9.0 which was released on January 12, 2012.[6][7] The software development kit (SDK) is based on LLVM and Clang,[8] which Sony has chosen due to its conformant C and C++ front-ends, C++11 support, compiler optimization and diagnostics.[9] Besides the kernel and related components, other components include Cairo, Lua, Mono, OpenSSL, WebKit, and the Pixman rendering library.[7] Many of these are open-source software.[7][10]

#### GNM

The PlayStation 4 features two graphics APIs, a low-level API named GNM and a high-level API named GNMX.[11][12][13] GNMX wraps around GNM, and in turn manages the more low-level GPU details.[11] For example, GNMX has a feature called Constant Update Engine which manages GPU constants.[11] This simpler API is at the cost of more direct access to the GPU's features and a significant CPU cost.[11] GNM and GNMX are analogous to Direct3D 12 and Direct3D 11, respectively.[12]

#### PSSL

Another key area of the PS4 is its programmable pixel shaders.[14][13] Sony's own PlayStation Shader Language (PSSL) was introduced to the PlayStation 4.[15] PSSL is very similar to the HLSL standard in DirectX 12,[8][16] with only subtle differences that could be eliminated mostly through preprocessor macros.[11]

### Graphical shell

The PlayStation 4 uses the PlayStation Dynamic Menu as its graphical shell,[17][18][19] in contrast to the XrossMediaBar (XMB) used by the PlayStation Portable and PlayStation 3, as well as the LiveArea used by the PlayStation Vita and PlayStation TV. It is named "Dynamic Menu" because the options it offers to players are context-sensitive, changing based on what a player is actually doing with their PlayStation 4 at any given time. This makes navigation simpler than the previous iteration. This dynamic menu can alter itself so that there's as little time as possible between the users placing a game in the disc drive and the actual gameplay beginning.[20]

The main place for entertainment options, the Content area, is prominently displayed with large square icons on a horizontal line arranged by the most recently used. Users can scroll through this gamer newsfeed in an alternating, brick-like formation. Many other main objects will display additional information when having the cursor selected on them. A game may have news updates or advertisements for its downloadable content. Recently played games receive tiles along with a number of mandatory items, for example the Live from PlayStation and the Internet Browser application.[21]

### Augmented Reality

The augmented reality application, The Playroom, comes pre-installed with the PlayStation 4 console. It was demonstrated at E3 2013 and utilizes the Sony PlayStation Camera technology. The game functions by combining the light bar located on the front of DualShock 4 controller with the PlayStation Camera. Players are allowed to produce a small floating robot called Asobi, who interacts with the players, scans their faces and shoots fireballs. Once the PlayStation Camera identifies the player with the help of the light bar on the front, a flick on the touchpad of the DualShock 4 controller brings up the augmented reality Bots function of the PlayRoom, which creates the illusion that there are hundreds of little robots inside the controller, which can be released by tapping on the track pad. PS4 owners can view their smartphone or PlayStation Vita for drawing the object and flick it anywhere for the augmented reality Bots to play with.

### Remote Play and second screen

Through Remote Play, users can operate their PS4 through the uses of a PlayStation Vita handheld game console, allowing for the play of PS4 games and other media on the small device via streaming.[22] All games that do not require the PlayStation Move or PlayStation Camera are compatible.[23]

The second screen can be used to display unique content when playing games that support this option, not to be confused with a split-screen. The second screen may be used to show extra content like maps, alternate camera angles, radar or playbooks in sports games. Apart from PlayStation Vita, other mobile devices such as iPads or Android tablets can also be used as a second screen.[24] That comes in the form of both the official PlayStation App and game companion apps such as Knack's Quest.[22]

### Social features

The PS4 has a number of social-centric apps and features. The What's New feature allows users to check out their friends' latest activities via a landing page with their pictures, trophies and other recent events. A live-chat feature, named Party Chat, gives users the ability to chat with other users through both text-chat and voice-chat, regardless of whether or not they're playing the same title.

PS4 owners are able to capture or livestream gameplay using the SHARE button on the Dualshock controller. This feature has the ability to record up to 60 minutes of gameplay. Footage can be shared on Facebook, Twitter and YouTube. They also have the ability to broadcast their gameplay in real-time to Twitch in addition to recording videos. This feature also supported live-streaming to Ustream, prior to the deprecation of Ustream in 2018.[25]

There are also other social features such as community creation. Some of them were introduced via system updates. Favorite Groups is a section within the Friends app, and acts as a way to quickly access other people a user plays with the most. This feature is aimed at making it easier and faster to get into a game session with friends. On the other hand, communities are new hubs that can be formed around shared interests like games, activities, or play styles. There also exist other smaller social features on PS4, such as the ability to message a friend with a request to watch their gameplay live.[26]

### Internet features

While the PlayStation 4 console can function without an Internet connection, it provides more functionality when it is connected to the Internet.[27] For example, updates to the system software may be downloaded from the Internet, and users may play online when the Internet is properly connected. Online play is the main pillar for the PlayStation 4, but a PlayStation Plus subscription is required to play the majority of PS4 titles online, unlike PlayStation 3 titles. According to Sony, they are developing many new ways to play and connect for PS4 which requires a large investment of resources. As a result, Sony claim they cannot keep such a service free and maintain its quality at the same time considering the cost, and they thus decided that it would be better to charge a fee in order to continue to offer a good service.[28]

The web browser included in the PlayStation 4 console is based on the open source WebKit layout engine, unlike the PlayStation 3 which uses the NetFront browser.[29] Using the same modern Webkit core as Safari from Apple, the PS4 web browser receives a very high score in HTML5 compliance testing.[30] However, just like other major browsers,[31] it does not support the deprecated[32] Adobe Flash, which means that websites which still require Flash might not display properly or function as intended. Also, the PDF format is not supported. However, one clear advantage for gamers is being able to cut between gaming and browsing and back again with no loss of gameplay due to the multitasking feature of the web browser.[33] Additionally, while the PS4 web browser has limited support for USB keyboards, it does not seem to support USB mice at all.[34]

Furthermore, with Internet connection enabled the PlayStation 4 allows users to access a variety of PlayStation Network (PSN) services, including the PlayStation Store, PlayStation Plus subscription service, and more. Users may download or buy games and other content from these services. Also, gamers are able to play a selection of PS3 titles via the Internet-based PlayStation Now gaming service. PS Now is a cloud-based gaming subscription service from Sony Interactive.[35]

### Multimedia features

The PlayStation 4 supports playing standard 12-centimeter DVD-Video discs; DVD recordable and rewritable discs except those that have not been finalized; and standard Blu-ray discs with the exception of Blu-ray Recordable Erasable version 1.0 discs and Blu-ray XL format discs. Unlike all previous PlayStation consoles the system does not support the Compact Disc format at all, including Compact Disc Digital Audio and Video CD format discs.[36] Blu-ray 3D support was added in system software version 1.75.[37] In 2015, Sony partnered with Spotify to bring the music streaming service to the PlayStation 4, allowing music to be streamed in the background of any game or application for both free and premium members of Spotify.[38]

The Media Player application included with the system can be used to play media files on USB storage devices or media servers. According to the PlayStation 4's user guide, media formats supported include videos contained in the MP4, MKV and AVI formats and encoded in H.264 AVC High Profile 4.2, MPEG4 ASP, MPEG2 Visual, AVCHD, and XAVC S; audio encoded in MP3, FLAC, or AAC; or AC-3 (Dolby Digital) and photos encoded in JPEG, BMP, or PNG. The PlayStation 4 Pro also supports videos encoded in H.264 AVC High Profile 5.2. If users have a PlayStation VR headset connected, they can view 360-degree videos inside the headset.[39]

In 2023 the Sony Pictures Core video service was launched on PS4.[40]

### Backward compatibility

See also: List of PlayStation 2 games for PlayStation 4

The PlayStation 4 was not backward compatible with any games from previous PlayStation consoles at launch. Though PlayStation 4 users cannot play PlayStation 3 games directly, in 2014, the PlayStation Now cloud-based streaming service allowed for the streaming of selected PS3 games.[41][42] In December 2015, Sony added PlayStation 2 backward compatibility and republished some PS2 games such as Dark Cloud and Grand Theft Auto III, Software:Grand Theft Auto: Vice City, and Software:Grand Theft Auto: San Andreas on the PS4 via the PlayStation Store in the Americas and Europe. Supported PS2 games run via software emulation (upscaled to high definition) on PS4 systems instead of having been remastered.[43][44] Each one has been updated to access various PS4 features, including Trophies, Share Play, Broadcasting, Remote Play and second-screen features. However, the original PS2 game discs, and PS2 Classics re-released for the PS3 are not compatible with the PS4 system.[45][46]

## History of updates

The initial version of the system software for the PlayStation 4 is 1.01 as pre-installed on the original consoles. Support for the Remote Play and second screen experiences were added in version 1.50, which was launched on the same day the PlayStation 4 console itself was released in North America on November 15, 2013. Both features are accessible from the PlayStation Vita console by using its PS4 Link application, and the second screen functionality is also accessible from smartphones and tablets through the PlayStation Mobile app. It is also able to record or share video clips as well as broadcasting gameplay to Twitch or Ustream.[47] It supports Blu-ray and DVD-Video playback, and version 1.60 was released on February 4, 2014, improving DVD playback. Version 1.60 also adds support for Pulse Elite wireless headsets.[48] Version 1.70 was released on April 30, 2014, and adds a number of new features, such as the addition of a rich video editor called ShareFactory that offers users the tools to combine, edit and personalize captured video clips. This update also adds the abilities to share video clips and screenshots while streaming, and to copy video clips and screenshots to USB storage.[49] Version 1.75 was released on July 29, 2014, further adding the support for playback of Blu-ray 3D. It also improves the sound quality during 1.5-speed playback with Blu-ray and DVD video.[50]

On September 2, 2014, Sony released update 1.76 which came with minor changes and was the last update until 2.0.[51]

On October 28, 2014, Sony released update 2.00 as a major upgrade to the PlayStation 4 system software. Among the features introduced is Share Play, which allows PlayStation Plus users to invite an online friend to join their play session via streaming, even if they do not own a copy of the game. Users can pass control of the game entirely to the remote user, or partake in cooperative multiplayer as if they were physically present.[52][53] This version also adds a YouTube app and the ability to upload video clips to YouTube, and users can now play music stored on USB storage devices. Also, with the support for custom themes and the ability to change the background color, users can set themes for home screens and function screens for each user in this version.[54]

On March 26, 2015, Sony released update 2.50, adding a suspend/resume feature to allow players to jump in and out of games with the PS button, and games are suspended in the low-power Rest Mode instead of closing completely.

This version also allows the console's hard drive to be backed up or restored to a USB flash drive.[55]

On September 30, 2015, Sony released update 3.00. It introduced "entirely new features" and user-interface enhancements. Among the new features was the ability to share videos directly to Twitter, a dedicated PlayStation Plus section, tweaks to the interface for streaming on YouTube, improvements to social features such as messages and group creation, and the ability to save screenshots as PNGs. An increase in online storage capacity from 1 GB to 10 GB was also introduced for PlayStation Plus Members. Sony states that this update will create "new ways to connect with friends and players around the world, expanding the social capabilities of the system even further".[56]

On April 6, 2016, Sony released update 3.50, that would enable the PS4 to use Remote Play functionality on Windows and macOS (formerly named OS X). VG247 reported that the update will allow Remote Play functionality on computers running Windows 8.1, Windows 10, OS X Yosemite, and OS X El Capitan. Furthermore, the article explains that Remote Play will support resolution options of 360p, 540p, and 720p, frame rate options of 30 FPS and 60 FPS, and that one DualShock 4 controller can be connected via the computer's USB port.[57]

On September 13, 2016, Sony released update 4.00, which added High Dynamic Range (HDR) and home screen folder support, 1080p streaming, tweaks to menus and game info screens for greater overview, and streamlined interfaces.[58][59]

On March 9, 2017, Sony released update 4.50 including support for installing applications on external hard drives, custom wallpapers, refined Quick Menu, simplified notifications list, custom status updates, 3D Blu-Ray support for the PlayStation VR[60] and support for the preloading of game patches. However it is up to the developer to make use of it. The first game to take advantage of pre loading game patches is LittleBigPlanet 3.[61]

On October 3, 2017, Sony released update 5.00. Overhauling the master/sub-account system, the update allows for more customization of accounts for family members and roles, and applying parental controls to each account. The groups system is replaced with a new friends management system, along with support for 5.1 and 7.1 surround sound configurations for PlayStation VR. A new tournament bracket viewer has been made, along with tweaks to broadcasting (with 1080p streaming at 60 frames per second on Twitch now possible), and other changes to PS Message, notifications, and the quick menu. Lastly, it introduces localization for Czech, Greek, Hungarian, Indonesian, Romanian, Thai, and Vietnamese languages.[62]

5.50 was released on March 8, 2018. It includes playtime restrictions for child accounts, the ability to hide applications from the library, custom wallpapers via USB, a supersampling mode on PS4 Pro and the ability to delete notifications.[63]

On March 7, 2019, Sony released Update 6.50 that allowed users to use Remote Play on iOS devices through the Remote Play app from the App Store, and other minor improvements.

On May 10, 2019, Sony Interactive Entertainment added the ability to remove purchased games from the Download List for PlayStation Store and delete games from My Profile.

On October 8, 2019, Sony released update 7.00. The major feature that was added was the ability to use Remote Play on select Android devices running the Android Lollipop version and above. In addition, other features include chat transcription and the expanded limit for party users from 8 to 16.[64]

On October 14, 2020, Sony released update 8.00. It brought changes to existing Party and Message features. Other additions include new avatars, enhanced 2-step verification system and updated parental controls.[65]

On April 14, 2021, Sony released update 8.50, which enabled cross-play between the PlayStation 4 and PlayStation 5. They also added the feature to request to join game session leaders, and more.[66]

On September 15, 2021, Sony released update 9.00 allowing PlayStation 4 users to access PlayStation 5 trophies, improvements to parental controls and messages feature.[67] This update also fixed the eventual cbomb issue discovered by Destruction Games[68] that would cause PlayStation 4's to no longer be able to play physical or digital games.[69] Controversially, it has caused serious issues for some.[70]

On February 19, 2022, Sony released update 9.04 which claimed to have "improved system performance." and fixed issues with the game Cyberpunk 2077.[71]

On March 23, 2022, Sony released update 9.50 with Party Feature updates and Ukrainian language support.[72]

On September 7, 2022, Sony released update 10.00 improving Remote Play and other features.[73]

On September 21, 2022, Sony released update 10.01 improving the system and performance.[74]

On March 9, 2023, Sony released update 10.50 allowing access to authorized third-party apps in Settings.[75]

## See also

Other gaming platforms from Sony:

* PlayStation 3 system software
* PlayStation Vita system software
* PlayStation Portable system software

Other gaming platforms from this generation:

* Wii U system software
* Xbox One system software
* Nintendo 3DS system software
* Nintendo Switch system software

Other gaming platforms from the seventh generation:

* Wii system software
* Xbox 360 system software
* Nintendo DSi system software

## References

1. ↑ "Open Source Software used in PlayStation®4". Sony Interactive Entertainment Inc.. https://doc.dl.playstation.net/doc/ps4-oss/.
2. ↑ "PlayStation 4 Release Date". IGN. February 4, 2013. http://uk.ign.com/wikis/playstation-4/PlayStation_4_Release_Date.
3. ↑ "PS4 system software update features (US)". PlayStation. https://www.playstation.com/en-us/support/hardware/ps4/system-software-info/.
4. ↑ "System Language". Sony Interactive Entertainment, Inc.. March 24, 2022. https://manuals.playstation.net/document/en/ps4/settings/syslanguage.html.
5. ↑ Hurley, Leon (August 20, 2013). "PS4 dynamic menu featured live video feeds of friends games & game-specific messaging". http://www.officialplaystationmagazine.co.uk/2013/08/20/ps4-dynamic-menu-featured-live-video-feeds-of-friends-games-game-specific-messaging/.
6. ↑ Larabel, Michael (June 23, 2013). "Sony's PlayStation 4 Is Running Modified FreeBSD 9". Phoronix. https://www.phoronix.com/scan.php?page=news_item&px=MTM5NDI.
7. ↑ 7.0 7.1 7.2 "Open Source Software used in PlayStation®4". Scei.co.jp. http://www.scei.co.jp/ps4-license/.
8. ↑ 8.0 8.1 Tan, Nicholas (March 27, 2013). "Here Are (Most Of) The Technical Specifications For The PlayStation 4". https://www.gamerevolution.com/originals/5057-here-are-most-of-the-technical-specifications-for-the-playstation-4.
9. ↑ "The LLVM Compiler Infrastructure Project". https://llvm.org/devmtg/2013-11/#talk8.
10. ↑ "[Phoronix The PlayStation 4 Does Use The FreeBSD Kernel, Mono"]. Phoronix.com. https://www.phoronix.com/scan.php?page=news_item&px=MTU1MzA.
11. ↑ 11.0 11.1 11.2 11.3 11.4 Leadbetter, Richard (19 July 2013). "How The Crew was ported to PlayStation 4" (in en). https://www.eurogamer.net/digitalfoundry-how-the-crew-was-ported-to-playstation-4.
12. ↑ 12.0 12.1 Hooper, Steffan (2017). "Automated Testing and Validation of Computer Graphics Implementations for Cross-platform Game Development" (in en). Auckland University of Technology. https://hdl.handle.net/10292/11017.
13. ↑ 13.0 13.1 Schertenleib, Sébastien. "Unlocking the potential of PlayStation®4: An In-Depth Developer Guide". Sony Computer Entertainment Europe. http://develop.scee.net/files/presentations/gceurope2013/ParisGC2013Final.pdf.
14. ↑ Richard Leadbetter (July 19, 2013). "How God of War was brought from PlayStation to PC - Eurogamer". https://www.eurogamer.net/articles/digitalfoundry-2022-god-of-war-pc-tech-interview.
15. ↑ Leadbetter, Richard (March 28, 2013). "Inside PlayStation 4". http://www.eurogamer.net/articles/digitalfoundry-inside-playstation-4.
16. ↑ Stenson, Richard; Ho, Chris. "PlayStation® Shader Language for PlayStation®4". https://archive.org/details/playstationr-shader-language-for-playstationr4.
17. ↑ Pearson, Rob (July 12, 2013). "20 things you didn't know about PS4". PlayStation Blog. Sony Computer Entertainment. http://blog.eu.playstation.com/2013/07/12/20-things-you-didnt-know-about-ps4/.
18. ↑ June, Laura (February 20, 2013). "Sony completely revamps its user interface for the PlayStation 4". The Verge (Vox Media). https://www.theverge.com/2013/2/20/4010414/sony-completely-revamps-its-user-interface-for-the-playstation-4.
19. ↑ Stuart, Keith (July 15, 2013). "PS4: 14 things we learned at Develop 2013". https://www.theguardian.com/technology/gamesblog/2013/jul/15/ps4-develop-2013-playstation-sony.
20. ↑ "What Is the PlayStation 4 Dynamic Menu?". Howcast. November 7, 2018. http://www.howcast.com/videos/515524-what-is-the-dynamic-menu-ps4-faqs/.
21. ↑ "PlayStation 4 Review: The User Interface". PlayStation Universe. December 4, 2013. http://www.psu.com/feature/21866/PlayStation-4-Review--The-User-Interface.
22. ↑ 22.0 22.1 "Remote Play And The PS4's Second Screen Experience". thesixthaxis.com. November 28, 2013. http://www.thesixthaxis.com/2013/11/28/remote-play-and-the-ps4s-second-screen-experience/.
23. ↑ "PS4 Remote Play is Sony's killer feature and it's not even new". trustedreviews.com. November 29, 2013. http://www.trustedreviews.com/opinions/ps4-remote-play-is-sony-s-killer-feature-and-it-s-not-even-new.
24. ↑ "How to use Remote Play or second screen with PS4". gamepur.com. August 20, 2014. http://www.gamepur.com/guide/15910-how-use-remote-play-or-second-screen-ps4.html.
25. ↑ Smith, Sherri L. (December 5, 2013). "PS4 vs. Xbox One (2013): Which Console Wins?". http://www.tomsguide.com/us/ps4-vs-xbox-one,review-1970-6.html.
26. ↑ Westlake, Adam (September 2, 2015). "PS4's software update 3.00 beta launches, new features detailed". http://www.slashgear.com/ps4s-software-update-3-00-beta-launches-new-features-detailed-02400453/.
27. ↑ Hurley, Leon (March 20, 2013). "Michael Denny on PS4's philosophy". Official PlayStation Magazine (Future plc). http://www.officialplaystationmagazine.co.uk/2013/03/20/michael-denny/.
28. ↑ Makuch, Eddie (June 27, 2013). "Sony explains why PS Plus is required for PS4 online play". GameSpot. http://www.gamespot.com/articles/sony-explains-why-ps-plus-is-required-for-ps4-online-play/1100-6410806/.
29. ↑ "Web development for the PS3". Clawg. June 18, 2011. http://clawg.net/articles/web-development-for-the-ps3.php.
30. ↑ HTML5 TEst. "how well does your browser support html5?". http://html5test.com/results/other.html#gaming.
31. ↑ "The End of an Era – Next Steps for Adobe Flash". March 5, 2020. https://blogs.windows.com/msedgedev/2017/07/25/flash-on-windows-timeline/.
32. ↑ "Flash & The Future of Interactive Content". March 5, 2020. https://theblog.adobe.com/adobe-flash-update/.
33. ↑ D., MarryAnn (May 30, 2015). "How To Use The PS4 Web Browser". PS4 Home. http://www.ps4home.com/how-to-use-the-ps4-web-browser/.
34. ↑ "Sony PlayStation 4 (PS4) Web browser Information". vdhdesign.co.nz. November 29, 2013. http://coding.vdhdesign.co.nz/?p=351.
35. ↑ Martin, Chris (July 16, 2015). "PlayStation Now release date, price, supported device and features: PS Now reaches open beta". http://www.pcadvisor.co.uk/feature/game/playstation-now-release-date-price-supported-devices-features-uk-3497234/.
36. ↑ "Supported disc formats | PlayStation®4 User's Guide". https://manuals.playstation.net/document/en/ps4/videos/videodisc.html.
37. ↑ Langley, Hugh (July 29, 2014). "You can watch 3D Blu-rays on your PS4 right now". http://www.techradar.com/us/news/gaming/consoles/you-can-watch-3d-blu-rays-on-your-ps4-right-now-1259494.
38. ↑ "PlayStation, Meet Spotify". January 28, 2015. https://blog.playstation.com/2015/01/28/playstation-meet-spotify/.
39. ↑ "Supported file formats | PlayStation®4 User's Guide". https://manuals.playstation.net/document/en/ps4/music/mp_format_m.html.
40. ↑ "Sony Pictures Core, formerly Bravia Core, launches on PS5 and PS4 consoles; exclusive benefits including early access to select Sony Pictures films" (in en-US). 2023-10-05. https://blog.playstation.com/2023/10/05/sony-pictures-core-formerly-bravia-core-launches-on-ps5-and-ps4-consoles-exclusive-benefits-including-early-access-to-select-sony-pictures-films/.
41. ↑ "PS1/PS2 games heading to PlayStation 4". Eurogamer.net. January 28, 2014. http://www.eurogamer.net/articles/digitalfoundry-2014-ps1-ps2-games-heading-to-ps4.
42. ↑ "Digital Foundry: Hands-on with PS4's PlayStation 2 emulation". Eurogamer.net. November 20, 2015. http://www.eurogamer.net/articles/digitalfoundry-2015-hands-on-with-ps4-playstation2-emulation.
43. ↑ "Sony is adding PlayStation 2 backwards compatibility to the PS4". www.engadget.com. November 20, 2015. https://www.engadget.com/2015/11/20/sonys-adding-playstation-2-backwards-compatibility-to-the-ps4/.
44. ↑ "PlayStation 2 games launch on PS4 tomorrow (update)". www.polygon.com. December 4, 2015. http://www.polygon.com/2015/12/4/9851808/ps2-games-ps4-1080p-upscale.
45. ↑ "Report: Dark Cloud leaked for backward compatibility on PS4, PS2 discs not supported". www.polygon.com. December 3, 2015. http://www.polygon.com/2015/12/3/9846578/ps4-ps2-backward-compatibility-dark-cloud-leak.
46. ↑ "Classic PlayStation 2 games ready to run on the PlayStation 4". www.cnet.com. http://www.cnet.com/news/classic-playstation-2-games-ready-to-run-on-the-playstation-4/.
47. ↑ "PS4 1.50 System Update Launches Day 1; Includes PS Vita Remote Play, Gameplay Sharing, More". PlayStation LifeStyle. October 25, 2013. http://www.playstationlifestyle.net/2013/10/25/ps4-1-50-system-update-launches-day-1-includes-ps-vita-remote-play-gameplay-sharing-more/.
48. ↑ "PS4 Firmware Update 1.60 Out Now, Main Features Detailed". PlayStation LifeStyle. February 4, 2014. http://www.playstationlifestyle.net/2014/02/04/ps4-firmware-update-1-60-out-now-main-features-detailed/.
49. ↑ Jenna Pitcher (April 17, 2014). "PS4 update 1.70 coming soon, introduces video editor app, USB saves, game pre-loading". Polygon. http://www.polygon.com/2014/4/17/5623330/ps4-update-1-70-coming-soon-introduces-video-editor-app-sharefactory.
50. ↑ "PS4 Firmware Update 1.75 is out now". VG247.com. July 29, 2014. https://www.vg247.com/2014/07/29/ps4-firmware-update-1-75-is-out-now/.
51. ↑ "PlayStation 4 System Software Update History - PlayStation®". playstation.com. http://us.playstation.com/support/systemupdates/ps4/history/index.htm.
52. ↑ Andrew Kelly. Share Play in Action on PS4 , blog.us.playstation.com, October 24, 2014.
53. ↑ Isabelle Tomatis. PS4's Share Play feature in action , blog.eu.playstation.com, October 24, 2014.
54. ↑ "PS4 update 2.0: What you need to know". trustedreviews.com. October 27, 2014. http://www.trustedreviews.com/opinions/ps4-update-2-0-what-you-need-to-know.
55. ↑ "PS4 Update 2.50 Features: What's new?". trustedreviews.com. March 25, 2015. http://www.trustedreviews.com/opinions/ps4-update-2-50-features-what-s-new.
56. ↑ "PS4 Firmware 3.0 Out Now, Here's Everything it Adds and Changes". GameSpot. http://www.gamespot.com/articles/ps4-firmware-30-out-now-heres-everything-it-adds-a/1100-6431012/.
57. ↑ Saed, Sherif (April 5, 2016). "PlayStation 4 firmware update 3.50 out tomorrow – full details". https://www.vg247.com/2016/04/05/playstation-4-firmware-update-3-50-release-date-details/.
58. ↑ Koller, John (September 12, 2016). "PS4 System Software Update 4.00 Out Tomorrow". Sony. http://blog.us.playstation.com/2016/09/12/ps4-system-software-update-4-00-out-tomorrow/.
59. ↑ McCormick, Rich (September 13, 2016). "Sony's biggest ever PlayStation 4 update is out now". https://www.theverge.com/2016/9/13/12899654/sony-ps4-update-4-shingen-out-now.
60. ↑ Koller, John (February 3, 2017). "PS4 System Software Update 4.50 Features Detailed". http://blog.us.playstation.com/2017/02/03/ps4-system-software-update-4-50-features-detailed/.
61. ↑ Mahmud, Ahnaf (March 15, 2017). "Looks like the PlayStation 4 can now preload game patches". https://gamenology1.wordpress.com/2017/03/15/looks-like-the-playstation-4-can-now-preload-game-patches/.
62. ↑ Andrew, Kelly (August 18, 2017). "PS4's System Software 5.00 Beta Rolls Out Today, Key Features Detailed". https://blog.us.playstation.com/2017/08/17/ps4s-system-software-5-00-beta-rolls-out-today-key-features-detailed/.
63. ↑ "Everything you need to know about PS4 system software update 5.50, launching today" (in en-GB). PlayStation.Blog.Europe. March 8, 2018. https://blog.eu.playstation.com/2018/03/08/everything-you-need-to-know-about-ps4-system-software-update-5-50-launching-today/.
64. ↑ Bankhurst, Adam (October 8, 2019). "PS4 7.00 Firmware Update Adds Remote Play Android Support and More". https://ign.com/articles/2019/10/07/ps4-700-firmware-update-adds-remote-play-android-support-and-more.
65. ↑ Bankhurst, Adam (October 15, 2020). "PS4 Firmware Update 8.0 Changes Party and Messages Features, Adds Free Avatars for PS4 Exclusives". IGN. https://www.ign.com/articles/ps4-firmware-update-80-changes-party-and-messages-features-adds-free-avatars-for-ps4-exclusives.
66. ↑ Lara, James (April 14, 2021). "New PS4 Update 8.50 Available, Here's Everything That's New)". mp1st. https://mp1st.com/news/new-ps4-update-8-50-available-heres-everything-thats-new/.
67. ↑ Club, Tuff (September 15, 2021). "PS4 firmware update 9.00 brings new features, here are the patch notes)". thesixthaxis. https://www.thesixthaxis.com/2021/09/15/ps4-firmware-update-9-00-patch-notes/.
68. ↑ Alwani, Rishi (19 April 2021). "What Is CBOMB and Why You Should Care: Sony's PS5 and PS4 Game Preservation Problem Explained". https://in.ign.com/playstation-5-playstation-5/157655/feature/ps5-games-cbomb-sony-preservation-ps4-vita-ps3.
69. ↑ De Meo, Francesco (September 22, 2021). "PlayStation 4 Firmware Update 9.00 Fixes Missing CMOS Battery Issues)". wccftech. https://wccftech.com/playstation-4-fixes-missing-cmos-issues/.
70. ↑ Lawlor, Shannon (September 21, 2021). "PS4 System Update 9.00 Issues Explained)". gamerant. https://gamerant.com/ps4-system-update-9-issues-bricked-consoles-explained/.
71. ↑ Lara, James (February 19, 2022). "PS4 Firmware Update 9.04 Rolls Out Feb. 19 for Cyberpunk 2077 Fix)". mp1st. https://mp1st.com/title-updates-and-patches/ps4-firmware-update-9-04-rolls-out-feb-19-for-cyberpunk-2077-fix/.
72. ↑ Knight, Kyle. "PS4 System Software Update 9.50 Patch Notes (March 23))". dualshockers. https://www.dualshockers.com/ps4-system-software-update-9-50-patch-notes-today-march-23/.
73. ↑ Awan, Salal (September 7, 2022). "PS4 System Update 10.00 Brings Some New Changes With It)". twistedvoxel. https://twistedvoxel.com/ps4-system-update-10-00/.
74. ↑ Co, Alex (September 21, 2022). "PS4 Update 10.01 Released by Sony This September 21". mp1st. https://mp1st.com/news/ps4-update-10-01-released-by-sony-this-september-21.
75. ↑ "PS4 Update 10.50 Is Out, Patch Notes Released" (in en-US). 2023-03-08. https://www.yahoo.com/entertainment/ps4-10-50-patch-notes-102208241.html.

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