Custom Firmware(CFW)

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Before downloading and installing Custom Firmware, read Installing Custom Firmware to learn about the install process and how to avoid damaging your PSP!

Custom Firmwares are modified versions of Official Firmwares released by Sony for the Sony PSP(PlayStation Portable). You have to use the official firmware file with the file that is provided when downloading CFW's. Custom Firmwares are made with the intention of unlocking the full potential of one's PSP, including a Recovery Menu, Internal Flash access, running of unencrypted code, running of UMD Game Backups in the form of CSOs, ISOs, or in Dark_Alex's DAX format.



About Custom Firmware[edit | edit source]

Custom firmwares used a subset of the commonly known 1.50 firmware to enable a newer custom firmware to run homebrew capabilities, while newer custom firmwares use a custom IPL to launch the firmware and patch it. On firmwares with 1.50 kernel installed, less used features are removed in newer versions including "LocationFree Player" and Korean fonts in order to gain flash0 space. The firmware adds support for 1.50 homebrew in addition to loading official Sony EBOOTs, integrating an ISO/CSO loader launched from the XMB game menu, and a recovery menu accessible upon boot-up. (Or accessible from the XMB in some firmwares)

Early Custom Firmware Versions[edit | edit source]

Version 1.50 POC[edit | edit source]

On July 15 2006, a limited 1.50 custom firmware (named a proof of concept) was released by Dark AleX, allowing the execution of version 1.00 EBOOTs, access to a limited recovery mode, and ability to automatically load an application upon start. Other custom firmwares have since been released. Today, there are more developed versions such as "Casual V3" and the SE/OE/M33 firmwares.

Version 1.53 Custom Firmware[edit | edit source]

On 19 February 2007, a custom firmware was released by Eiffel56. This firmware was called 1.53 to avoid confusion between the official 1.51 and 1.52 firmwares compared to this custom version. This version is built for firmware 1.50 loyalists as not every user wished to upgrade to the SE or OE firmwares. This firmware offered many features offered in the 1.50 Proof of Concept firmware by Dark AleX such as a limited recovery mode, autoboot option, custom PRX loading, launching 1.00 Homebrew eBoots, hiding corrupt data icons and starting ISO files from the XMB.

Version 2.71 SE by Dark_AleX[edit | edit source]

On October 8 2006, Dark AleX's custom firmware 2.71 SE-A was released, which utilizes the features of the 2.71 web browser, video features, RSS feeds, WMA capabilities and flash capabilities for the web browser. Also in this custom firmware was full 1.50 user and kernel homebrew usage and full 2.71 user and kernel homebrew, as well as a recovery mode for unbricking "Semi-Bricked" PSPs from bad flashing etc.

An update to this new custom firmware came out on the 24th of the same month. In this update, 2.71 SE-B, the major feature is the loading of ISOs and CSOs from the game menu in the XMB. Just two days later it was updated to 2.71 SE-B' which includes NO-UMD ISO loading. A few days later, 2.71 SE-B" was released. It allowed the ability to run 2.80+ games, including GTA VCS. It also fixed some bugs found in 2.71 SE-B'. The latest version is 2.71 SE-C, which allows the loading of PRX files directly from the memory stick. This enables the option to safely add new functions to the firmware, for example the ability to listen to MP3 files while showing photos.

Epsilon Bios[edit | edit source]

On July 23 2006, a custom firmware, Epsilon Bios, was released for use with the Undiluted Platinum modchip. This firmware could only be used on PSPs with the modchip. This firmware resides on the modchip while it "piggybacks" the firmware on the PSP's flash.

Open Edition Firmware by Dark_AleX[edit | edit source]

Version 3.02 OE[edit | edit source]

On December 21 2006, a new custom firmware called "3.02 OE-A" was released by Dark AleX. It contains the same features of 2.71 SE-C as well as all the 3.02 features excluding the Location Free player and the Korean fonts. New features added to this custom firmware include WMA and Flash Player enabling through the Recovery Menu and cracking the Digital Rights Management of the PSX emulator, allowing users to share PSX games to other PSP systems.

On December 25 2006, an update to the 3.02 OE-A Firmware was released called "3.02 OE-B." Its main feature was the ability to run PSX games from a memory stick using a ripping utility called "popstation" released alongside the new firmware.

Version 3.03 OE[edit | edit source]

On January 4 2007, the custom firmware "3.03 OE-A" was released by Dark AleX. It has the same features of 3.02 OE-B along with the ability to run compressed PSX games and support for custom manuals in PSX games. Later on January 6 2007, 3.03 OE-A', also known as 3.03 OE-A2, was released. A new feature in this release is the ability to change the CPU/Bus speed in UMD/ISO games.

On January 10 2007, a "3.03 OE-B" custom firmware was released by Dark AleX. This custom firmware required 3.03 OE-A/A' firmware to be installed first. A new feature in this release is the ability to play full screen (480 X 272) H.264/MPEG-4 AVC|MP4-AVC videos.

On January 25 2007, Dark AleX released "3.03 OE-C" custom firmware. This was a major update and thus required a full install. Among the features are the ability to use WiFi at 333 MHz, the maximum bit-rate limit of MP4-AVC videos is raised from 768 kbit/s to 16384 kbit/s (16 Mbit/s), the ability to change the CPU/Bus speed of the XMB, and faster cold-boot as well as several other new features.

Version 3.10 OE[edit | edit source]

On February 4 2007, a "3.10 OE-A" custom firmware was released by Dark AleX, allowing screen brightness to be set to the 4th level without having to connect the AC adapter along with the ability to run static Executable and Linkable Format (ELF) created homebrew with the 3.10 kernel.

On February 6 2007, a "3.10 OE-A' / A2" update for 3.10 OE-A was released by Dark AleX, fixing a simple bug in the execution of PSP games including Metal Slug 6 and others. The bug was caused by the incorrect patching of a static ELF in some cases. This was only a minor update, however, and therefore was not needed by everyone running the custom firmware.

Version 3.30 OE[edit | edit source]

3.30 OE-A was released on April 15 2007. It offers all past features from other custom firmwares, as well as all features (except LocationFree Player) built into the official 3.30. IT included 1.50 features, as well as ISO/CSO loading and homebrew support. A 3.30 OE-A' update was released on April 20 2007. This release includes a fix to security bug that overwrites certain parts of the RAM and also reintroduces the auto-boot program feature.

Version 3.40 OE[edit | edit source]

3.40 OE was released on April 20 2007. This release includes the same changes made in 3.30 OE-A' except it now uses the 3.40 firmware. It fixed a bug that caused data to be written to random addresses in the PSP's RAM. If the bug caused memory writes to certain kernel functions, the console could potentially be rendered unusable if those functions were accessed. Autoboot, which had been broken since 3.03 OE, was reimplemented. Improvements in the flasher were made to check that the correct DATA.DXAR file is used for an update, thus preventing people using incorrect firmware version data files from rendering their PSP units useless.

LE Versions by Team Wildcard[edit | edit source]

Version 3.40* LE[edit | edit source]

On June 08 2007, Team Wildcard released a reverse engineered version to the OE Custom firmware source code. The firmware was released after it was leaked from Team Wildcard's servers. The firmware contains all the features of 3.40 OE but contains features such as a new recovery menu,(later dubbed LE Recovery), and in XMB recovery access. Many users complained, since it was not 100% complete, it contained many bugs and glitches. The vast majority of the bugs were addressed in subsequent patches to the original firmware, which also added features such as the automatic detection of which kernel should be used to run homebrew.

Increasing Edition Versions by becus25[edit | edit source]

Version 1.62 IE Custom Firmware[edit | edit source]

In March 2007, user becus25 released 1.62 IE-A. The latest version is 1.62 IE-D. Like custom firmware 1.53, it is based off the 1.5 kernel. Earlier versions of 1.62 IE would often cause bricks when the flash was modified, but updates were soon released fixing the problem. Currently though, 1.62 IE is only compatible with TA-079 motherboards and will brick on TA-082 and later motherboards. Features are similar to other firmwares including recovery mode, autoboot, and flash access. Becus25 has also modified the popular app by Booster, Devhook, which allows firmwares to run from the memory stick, virtually removing the chance of bricking.

Version 3.02 IE-A[edit | edit source]

In July 2007, user becus25 released 3.02 IE-A which incorporated 3.02 OE with some improvements of IE. He later released an update which resolved certain bugs in the initial release.

Version 3.40 IE[edit | edit source]

On August 07 2007, becus25 released his modification of 3.40 OE which includes a new "recovery menu" to use along with the OE one, called 3.40 IE-A. Several days later, becus25 released 3.40 IE-A2, with less chance of bricking, and some bug fixes in the recovery menu. It was met with much negative feedback from the homebrew community, due to the fact that it was, essentially, useless. Because of this, as well as personal issues, becus25 quit making firmware and homebrew.

M33 Firmware by Team M33[edit | edit source]

See the M33 Firmware page.

HX Versions by "_HellDashX_"[edit | edit source]

Version 3.72 HX[edit | edit source]

On November 06 2007, homebrew developer "_HellDashX_" released the 3.72HX-1 custom firmware. This custom firmware was made by reverse engineering Dark~AleX's 3.71 M33-2 and then adapting it to the 3.72 firmware. It contains all features from 3.71 M33-2 except the 1.50 kernel extension, which was released shortly after. A newer version called 3.72HX-2 has been released.

Version 3.73 HX[edit | edit source]

3.73 HX-1 was created and released on December 12, 2007 by "_HellDashX_".

This firmware enabled access to the official PSP features and changes, as well the “custom” factor enabling homebrew, etc

GEN Firmware[edit | edit source]

CFW 3.93

On April 26, 2008 an unknown developer released 3.93 CFW on pspgen.com. This CFW was made with permission from Dark_AleX and others. According to the readme, this CFW now uses the 3.93 kernel, and has added several features. These are the ability to access recovery from the XMB, the ability to make a Pandora Battery (convert/revert battery) from recovery, save savedata in its normal, unencrypted state, and the ability to hide the PSP Mac Address in the XMB. (Changing it to all 0's)

Although with the approval of Dark_AleX and Math, a few bugs has arisen. These are minor bugs and does not affect the firmware in any way. Sometimes, the Hide Pic0 in Game Menu and the Hide Mac Address options does not always work. This would require a user to reset their devices in order for it to be fully functional. Also, the CXMB 3.1 plugin cannot work with the Hide Mac Address option from the Recovery-Vsh Menu as it will freeze the System sub-menus in the XMB.

However, the firmware has been tested and 3.90 flash0 themes as well as CXMB are known to work properly. Also, the 3.90 IRShell patch can be successfully done enabling users to fully unlock the potential of IRShell.

A day later on April 27, 2008, a 1.50 Kernel Addon was released.

On May 3, 2008, an new Update (named Update 2) has been made available. Update 2 fixed a bug in the Sony's OSK where pressing SELECT while it was up would freeze the system. Also, Hellcat's Savegame Deemer was removed. However, it can still be used a an ordinary plugin.

Version 3.95 GEN[edit | edit source]

3.95 GEN is a custom firmware developed by Miriam of PSP-GEN. 3.95 GEN was released on June 01, 2008 at 01:00 pm, (GMT + 1) after being delayed due to server issues. During the delay, Miriam managed to work out most bugs that had existed before the release. This included fixing the Phat's memory limitations, and enabling popsloader to work where it has not previously worked before... The newly added features to 3.95 GEN included vsh-recovery where the recovery menu can be bought up from the XMB. The new recovery menu uses the standard M33 recovery and adds more features such as Pandora Battery creation tools, the ability to hide the MAC Address in the XMB, USB to the UMD. Also, the configuration of Network Update can be changed to search for updates for either GEN firmwares, M33 firmwares, or Sony's official firmwares. Outside of the firmware, the ipl for Slims is patched so units can boot up with a Pandora Battery, as well as load TimeMachine. Popsloader and PSX emulation is fixed and works as long as a user uses the 'popsloader.prx' file included in the download.

The use of the Sony updater is still present. However, the battery check, and IDStorage Key checks still exists. However, the ability to download the '395.PBP' from the Internet does not exist anymore.

As nids has changed from 3.90/3.93 to 3.95, some plugins may or may not work. Also, the MS read times seemed to be addressed by either Sony or Miriam in this release, as the PSP can read data from the MS in the XMB faster than on 3.80/3.90, even with the 3.71 fatmsmod.prx patch included. Some homebrew such as irShell and NervOS cannot fully work.

On June 6, 2008, Miriam released 3.95 GEN-2. 3.95 GEN-2 included fixed some of the known bug fixes within the firmware. This update fixed the bug where the PSP will act bricked if the user tried to access the vshMenu when it was turned off from recovery. Also, homebrew compatibility on both the Phat and Slim were increased, and some homebrew such as the latest SNES emulator worked again. On top of that, Phat users were able to use popsloader again since the memory limitation has been addressed and fixed. However, some bugs such as the .at3 file not playing while selecting homebrew and PSP ISOs do not play while on PSX games they do.

Version 5.02 GEN[edit | edit source]

On January 1, 2009, Miriam released 5.02 GEN-A. After being convinced by the members of PSPGEN to make another custom firmware, 5.02 was chosen. Two versions of 5.02 GEN were created. The "full" version of the firmware has all the features just as any other custom firmware such as the ability to play ISOs, and play PSX games. The "lite" version was a stripped down version which only allowed for the use of homebrew, and plugins as well as the use of whatever features the official firmware allows for.

With 5.02 GEN-A, several new features were added. This included the ability to use Bubbletune's game categories plugin, and Slim color patch, and the ability to reboot into a 5.02 official firmware version on a Slim. Compatibility with homebrew and PSX games have also increased. Other options such as ability to hide the MAC address in the XMB, translation of recovery, the use of popsloader, and the ability to access recovery via the vshMenu are all available for use. A 1.50 Kernel Addon for Phats is available.

Version 5.03 GEN[edit | edit source]

With the advent of the PSP Slim models with the TA-088v3 motherboard and the PSP-3000, custom firmware at the time was impossible. However, with the ChickHEN exploit which makes homebrew available, a temporary form of custom firmware is available. Team GEN released 5.03 GEN (also known as 5.03 HEN) which allow these PSP models to run homebrew and games just as if it had it's complete 5.03 custom firmware. 5.03 GEN is temporary due to ChickHEN. Unlike its 5.50 GEN counterpart, newer games requiring 5.55 or above needed to be decrypted with version 4 of Yoshirio's game decrypter.

With the release of 5.50 GEN-C, it was announced that 5.03 GEN will feature its exact updates in 5.03 GEN-B and will include an updated GEN vshMenu as well as GEN recovery menu. The release is set for sometime around Halloween.


Version 5.50 GEN[edit | edit source]

On June 13, 2009, 5.50 GEN was released over at PSPGen.com. This time, the firmware isn't made by Miriam, but a completely new developer: GENyUS. To install 5.50GEN, 3.52 M33 or higher is required. 5.50 GEN includes al updates of the original 5.50 firmware. As normal, 5.50 GEN plays homebrew games, ISO/CSO games and includes a recovery and vshMenu, an updated CXMB and Popsloader. The 1.50 Kernel Addon for Phats has yet to be released despite 5.50 GEN's numerous updates to the custom firmware.

A day later, a Build 4 Patch was released. This patch allows users to access the PlayStation Store after the recent 5.51 forcing users to upgrade. This is a workaround allowing this again.

On July 2, 2009, 5.50 GEN-B was released. It allowed Evangelion: Jo to be played. The game would not run if it detected a CFW. On September 6, 2009, 5.50 GEN-B2 was released that fixed several bugs preventing homebrew and Pandora functions to be used. On October 18, 2009, 5.50 GEN-C was released allowing users to run protected games and games requiring firmware 5.55 or higher without any patching with Yoshirio's Game Decrypter. However, due to various issues, it was quickly pulled and 5.50 GEN-D was released three days later on October 21. 5.50 GEN-D included all the features of 5.50 GEN-C, fixed its bugs including the 480x272 AVC video playback problem, and allowed users to connect to the PSN via MediaGO without the use of the USB Plugin Faker. On October 24, 5.50 GEN-D2 was released which allowed Evangelion: Jo to play again, fixed the WPA-PSK bug issue found on 5.50 GEN-D, fixed the output of 5.xx and 6.xx games, fixed the Make Pandora battery option in recovery and finally replaced their old gameboot with one that flashes red if the now in-built decrypter worked successfully.

TDP Firmware[edit | edit source]

Version 5.03 TDP[edit | edit source]

On April 4, 2009, the TodoPSP Team released their third revision to their 5.03 TDP custom firmware. This release has caused them to spring up in the PSP homebrew community. Version 3 includes a tdpDevKit tool which allows users to patch certain firmware specific homebrew files such as irShell to be compatible with 5.03 TDP. There has been a few bugs reported and 5.03 TDP-4 has been confirmed for release with no specific date.

Firmware by Unknown Author(s)[edit | edit source]

CFW 3.93[edit | edit source]

On April 26, 2008 an unknown developer released 3.93 CFW on pspgen.com. This CFW was made with permission from Dark_AleX and others. According to the readme, this CFW now uses the 3.93 kernel, and has added several features. These are the ability to access recovery from the XMB, the ability to make a Pandora Battery (convert/revert battery) from recovery, save savedata in its normal, unencrypted state, and the ability to hide the PSP Mac Address in the XMB. (Changing it to all 0's)

Although with the approval of Dark_AleX and Math, a few bugs has arisen. These are minor bugs and does not affect the firmware in any way. Sometimes, the Hide Pic0 in Game Menu and the Hide Mac Address options does not always work. This would require a user to reset their devices in order for it to be fully functional. Also, the CXMB 3.1 plugin cannot work with the Hide Mac Address option from the Recovery-Vsh Menu as it will freeze the System sub-menus in the XMB.

However, the firmware has been tested and 3.90 flash0 themes as well as CXMB are known to work properly. Also, the 3.90 IRShell patch can be successfully done enabling users to fully unlock the potential of IRShell.

A day later on April 27, 2008, a 1.50 Kernel Addon was released.

On May 3, 2008, an new Update (named Update 2) has been made available. Update 2 fixed a bug in the Sony's OSK where pressing SELECT while it was up would freeze the system. Also, Hellcat's Savegame Deemer was removed. However, it can still be used a an ordinary plugin.

Custom Firmware downloads by author[edit | edit source]

Dark_AleX (author of OE and M33 CFW's)[edit | edit source]

All Dark_Alex downloads listed will redirect to the forum topic on Dark_AleX Forums. There is no need to register to download.

Version 1.50 POC

http://exophase.com/files/psp/cf_proofofconcept.zip - Dark_AleX's Proof Of Concept 1.50 Custom Firmware

2.71 SE

http://dax.st/271SE_A.RAR - 2.71 Special Edition - Revision A 
http://dax.st/271_SEB.RAR - 2.71 Special Edition - Revision B 
http://dax.st/271_SEB2.RAR - 2.71 Special Edition - Revision B' 
http://dax.st/seb3.rar - 2.71 Special Edition - Revision B 
http://dax.st/sec.rar - 2.71 Special Edition - Revision C 

3.02 OE

http://dax.st/302OE.rar - 3.02 Open Edition - Revision A 
http://dax.st/oeb.rar - 3.02 Open Edition - Revision B 

3.03 OE

http://dax.st/303oe.rar - 3.03 Open Edition - Revision A 
http://dax.st/oe_a2update.rar - 3.03 Open Edition - Revision A' 
http://dax.st/OEB_UPDATE.RAR - 3.03 Open Edition - Revision B 
http://dax.st/303oe_C.rar - 3.03 Open Edition - Revision C 

3.10 OE

http://dax.st/310oe_a.rar - 3.10 Open Edition- Revision A 
http://dax.st/310_a2update.rar - 3.10 Open Edition- Revision A' 

3.03 And 3.10 Open Edition Mix for UP

http://dax.st/303_10oe_mix.rar - 3.03 And 3.10 Open Edition Mix for UP 

3.40 OE

http://dax.st/340_oea.rar - 3.40 Open Edition - Revision A 

3.51 M33

http://exophase.com/files/psp/m33rel.rar - 3.51 M33 
http://exophase.com/files/psp/m33wlanfix.rar - 3.51 M33 (WLAN fix)
http://exophase.com/files/psp/No-Umd-M33.zip - 3.51 M33-3 
http://exophase.com/files/psp/M33-4.zip - 3.51 M33-4 
http://exophase.com/files/psp/M33_5.zip - 3.51 M33-5 
http://exophase.com/files/psp/M33-6.zip - 3.51 M33-6 
http://exophase.com/files/psp/M33-7.zip - 3.51 M33-7 

3.52 M33

http://exophase.com/files/psp/3.52M33.zip - 3.52 M33 
http://exophase.com/files/psp/M33UPDATE2.zip - 3.52 M33-2 
http://exophase.com/files/psp/m33-333.zip - 3.52 M33-3 
http://exophase.com/files/psp/M33-1234.zip - 3.52 M33-4 

3.60 M33 for Slim

http://exophase.com/files/psp/360M33_for_Slim.zip - 3.60 M33 

3.71 M33

http://exophase.com/files/psp/release.rar - 3.71 M33 
http://exophase.com/files/psp/m33update2.rar - 3.71 M33-2 
http://exophase.com/files/psp/371m33-3.zip - 3.71 M33-3 
http://www.dark-alex.org/m33update4.zip - 3.71 M33-4 

3.80 M33

http://dax.st/380_m33.rar - 3.80 M33 
http://dax.st/m33update2.rar - 3.80 M33-2 
http://dax.st/380m33_3.rar - 3.80 M33-3 
http://dax.st/380m33_4.rar - 3.80 M33-4 
http://exophase.com/files/psp/380m33update5.rar - 3.80 M33-5

3.90 M33

http://exophase.com/files/psp/390m33.rar - 3.90 M33
http://exophase.com/files/psp/390m33_2.rar - 3.90 M33-2
http://exophase.com/files/psp/390m33_3.rar - 3.90 M33-3

4.01 M33

http://forums.exophase.com/showthread.php?t=7668 - 4.01 M33
http://forums.exophase.com/showthread.php?t=7675 - 4.01 M33-2

5.00 M33

 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1521&p=15012#p15012 - 5.00 M33
 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1844 - 5.00 M33-2
 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1893 - 5.00 M33-3
 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=4532 - 5.00 M33-4
 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=8154 - 5.00 M33-5
 http://www.dark-alex.org/forum/viewtopic.php?f=44&t=8158 - 5.00 M33-6

Team Wildc*rd[edit | edit source]

3.40* LE

http://dl.qj.net/3.40-LE-Team-Wildcard-Custom-Firmware-PSP/pg/12/fid/14242/catid/163 - 3.40 LE By Team Wildc*rd
http://dl.qj.net/3.40-LE-from-Team-Wildcard-v2-PSP/pg/12/fid/14251/catid/163 - 3.40 LE-2
http://dl.qj.net/CFW-3.40-LE-v3-(by-Team-Wildcard)-PSP/pg/12/fid/14256/catid/163 - 3.40 LE-3

xHellDashx[edit | edit source]

3.72 HX

http://dl.qj.net/Custom-Firmware-3.72-HX-1-PSP/pg/12/fid/15067/catid/163 - 3.72 HX-1
http://dl.qj.net/Custom-Firmware-3.72-HX-2-PSP/pg/12/fid/15147/catid/163 - 3.72 HX-2

3.73 HX

http://dl.qj.net/PSP-3.73-HX-1-PSP/pg/12/fid/15393/catid/163 - 3.73 HX-1

Ketchup[edit | edit source]

3.93 CFW

http://www.pspgen.com/modules.php?name=Downloads&d_op=getit&lid=4027 - 3.93 CFW
http://www.pspgen.com/modules.php?name=News&file=article&sid=6772&mode=&order=0&thold=0 - 3.93 CFW -2

Miriam (GEN Firmwares)[edit | edit source]

3.95 GEN

http://www.pspgen.com/modules.php?name=Downloads&d_op=getit&lid=4287 - 3.95 GEN
http://www.pspgen.com/modules.php?name=Downloads&d_op=getit&lid=4335 - 3.95 GEN-2

5.02 GEN-A

  http://www.pspgen.com/divers/telecharger-184731.html - 5.02 GEN-A

GENyUS (New GEN Firmwares)[edit | edit source]

5.50 GEN

http://www.pspgen.com/custom-firmware-5-50gen-telechargement-188076.html - 5.50GEN-A
http://www.pspgen.com/custom-firmware-5-50gen-b-telechargement-188493.html - 5.50GEN-B

English mirrors:

http://www.psp-hacks.com/file/1745 - 5.50GEN-A
http://www.psp-hacks.com/file/1764 - 5.50GEN-B
http://pspupdates.qj.net/PSP-Homebrew-CFW-5-50-GEN-C-now-out/pg/49/aid/135319 - 5.50GEN-C
http://www.psp-hacks.com/file/1840 - 5.50GEN-D
http://www.psp-hacks.com/file/1841 - 5.50GEN-D2
http://dl.qj.net/psp/homebrew-applications/550gen-d3.html - 5.50GEN-D3
http://dl.qj.net/psp/homebrew-applications/custom-firmware-550gen-d3-final.html - 5.50GEN-D3-2

TodoPSP (TDP Firmwares)[edit | edit source]

5.03 TDP

  http://www.todopsp.com/foros/showthread.php?t=99670 - 5.03 TDP-2
  http://www.megaupload.com/?d=8L8XRF2E - 5.03 TDP-3