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September 29, 2009 // 4:58 pm - According to French site PSPGen (linked above), Yoshihiro has made available a PSP Game Decrypter which allows users to run new PSP games on older PSP Firmware.

Prior to this, without a new PSP Custom Firmware update available those unwilling to upgrade their official PSP Firmware have been locked out of playing a lot of the new PSP games.

Yoshihiro was reportedly able to successfully play MotorStorm: Arctic Edge on 5.03GEN (PSP-3000 and PSP-2000 v3) and 5.50GEN (PSP-2000 and PSP-1000).

Download: PSP Game Decrypter

To quote, roughly translated: Today, Yoshihiro presents a tool that will please all the players in the community: Game Decrypter, which will allow owners of games requiring firmware 5.55 can play on Custom Firmwares 5.50GEN-B and 5.03GEN.

To do this, you will get the file EBOOT.BIN an ISO that you created with the utility UMDGen.

Most games asking the 5.55 can be treated with this tool. Some games (list available soon) will be impervious to manipulation, they require a patch to the image of him created to run Soulcalibur: Broken Destiny. But generally, you can finally play your own backups, without having to install official firmware.

What PSP can benefit?

The PSP Custom Firmware 5.50GEN-B. The PSP 2000-v3 and 3000 using the 5.03GEN (use mode driver in the M33 vsh menu).

PSP Game Decrypter - Play New Games on Old PSP Firmware

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#32 - PS4 News - June 30, 2010 // 10:09 pm
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Another update by hrimfaxi and coyotebean for PSP 6.30 Firmware and PRXDecrypter version 2.6a, which includes the new OFW 6.30 decryption method and keys.

In 6.30 firmware Sony has add two new types of PRX to protect their executable. But we only spend one day to crack that. Currently there is only psp phat key, but it should be enough though.

Key detail:
/* 6.30 phat kernel s_code 0x43 type 3 */
u8 key_4c9484f0[16] = {
0x36, 0xB0, 0xDC, 0xFC, 0x59, 0x2A, 0x95, 0x1D,
0x80, 0x2D, 0x80, 0x3F, 0xCD, 0x30, 0xA0, 0x1B,

/* 6.30 phat kernel-2, s_code 0x5b type 3 */
u8 key_457b80f0[16] = {
0xd4, 0x35, 0x18, 0x02, 0x29, 0x68, 0xfb, 0xa0,
0x6a, 0xa9, 0xa5, 0xed, 0x78, 0xfd, 0x2e, 0x9d

/* used by vshmain.prx, s_code 0x5a, type 3 */
u8 key_380280f0[16] = {
0x97, 0x09, 0x12, 0xD3, 0xDB, 0x02, 0xBD, 0xD8,
0xE7, 0x74, 0x51, 0xFE, 0xF0, 0xEA, 0x6C, 0x5C,

DecryptPRX2 cannot handle these new "type 3" prx, so I imported PSPCipher kprx_decrypt function to make this psardumper to work. After decrypting, a new game key (0xd91680f0) is found in mesg_led_01.prx. It is likely we kicked sony's ass again.

Credit: tpu dumped the IPL, and I found out what happened to the IPL decryptor.

Note: this source has been already covered by GPLv3 becuase of the usage of PSPCipher source.

A minor update to understand files tables of 6.30
- 100X/200X/300X: new tables for 07g and 09g
- go: uses the same table key as 100X/200X/300X
No 6.30 keys are added, files from 6.30 can only be extracted in encrypted form.
Also I have just updated the source code and compile, the program has not been tested.

PSP iSO Tool v1.60 by takka.

A comprehensive ISO / CSO file manipulation tool for PSP. Allows decryption of EBOOT.BIN files, repack ISOs, and/or convert ISOs to CSO format.

5.00 M33-7 Updater by Chiri_13:

Many of you will remember who you had the CFW 5.00 M33-6 how annoying it was to activate or deactivate version.txt that would change the options to speed up the memory stick. Well our good friend on her day DAX took a mini patch that solved this little bug, but not brought to light not to be as important and not make too much however it is now necessary to enter the Store with PSNLover of must have seen the light of this Mini Patch.

PRXDecrypter v2.6b is also below:

This mod of psardumper can decrypt individual firmware modules from retail firmwares and modules from retail games PRXs, and it can decompress M33 custom firmware modules.

The keys for the tag 0xD91613F0 has been successfully decrypted. Includes source code. Can decrypt/decompress/extract:

- firmware modules from official firmwares, for both old-style PSP and PSP Go
- updater modules from official updaters, including some obfuscated ones
- official updater DATA.PSP
- reboot.bin and reboot_02g.bin from all retail firmwares
- EBOOT.BIN and modules from retail games, and some nonretail/debug EBOOT.BIN files
- M33 custom firmware modules
- RLZ files
- KL3E/KL4E files
- meimg.img and me_sdimg.img
- some demos and game sharing DATA.PSP files
- index.dat

PSARDumper for 6.35 PSP is also below.

PSARDumper is used to decrypt and extract all files contained in an EBOOT from official update. Includes source code and keys for almost all 6.x firmwares including official firmware 6.35 by coyotebean.

Updates here:

PRXDecrypter 2.7a by Rahim-US, J416, FreePlay, and jas0nuk

PRXDecrypter, is an application developed by Jas0nuk initially to decrypt firmware modules, games eboots.bin ... I just updated the PRXDecrypter 2.6b, with new keys for 6.xx and added some features like extracting hidden prx for firmwares 6.xx

Changelog 2.6b --> 2.7a:

  • Now you can decrypt 6.3X and up EBOOT.BIN
  • You can extract hidden modules from any DATA.PSP including 6.xx
  • Decrypt/decompress 6.XX modules.
  • Keys for 6.XX - 6.60 added.
  • Log file can be enabled or disabled on app startup (with LTRIGGER)
  • Small fixes and other changes.

#31 - PS4 News - June 7, 2010 // 5:35 pm
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2010-06-07 update by coyotebean:

PSPgo 5.70 & 6.X kernel key added
Added missing key for vshmain in PSPgo 6.X

Also below are the source code for PSPident and PRXdecrypter and an updated version that can decrypt the PSPgo files for FW 5.70, 6.10 and 6.20.

#30 - PS4 News - June 1, 2010 // 6:50 pm
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Another update, this time PSARDumper with support for PSPgo by coyotebean.
Updated psardumper with support for PSPgo update.

Some keys are updated.

There is no keys to decrypt PSPgo kernel prx.

#29 - PS4 News - May 27, 2010 // 3:51 am
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Here is another PSPCipher update via hrimfaxi (

It's a completely rewritten prx decryptor based on 6.20 mesg_led_02g.prx. Right now there is only a POC version, but it already can decrypt 0x2e5e10f0, the key tag which pspdecrypt.prx failed to handle with. It also means you can decrypt PBOOT.PBP (game patch) since many patches use 0x2e5e10f0 to encrypt themselves.

Use unpack-pbp to unpack a PBOOT.BIN.
Rename DATA.PBP to EBOOT.BIN and move to ms0:/enc/.
Run PSPCipher, the EBOOT.BIN will be decrypted.
Replace original ISO with new EBOOT.BIN and PARAM.SFO. If you use Prometheus module then EBOOT.OLD instead.

Right now, God Eater 1.01 patch and Idol Master SP patch are tested.

Install LPB Update v2.05 on any CFW:
1) Extract DATA.PSP from PBOOT.PBP and rename it to EBOOT.BIN;
2) Copy EBOOT.BIN to "ms0:\ENC\";
3) Run PSPCipher and decrypt EBOOT.BIN;
4) Patch decrypted EBOOT.BIN with EDecrypt (one version check);
5) Replace original EBOOT.BIN from LBP.ISO with decrypted and patched EBOOT.BIN from update file;
6) Create "UCES01264" in "ms0:\PSP\GAME\";
7) Copy dlc0003.arc and patch.arc from update to "UCES01264" folder;
8) Copy generated LBP.ISO (with decrypted and patched EBOOT.BIN) to memstick;
9) Run the game and enjoy update installation
10) DON'T DELETE corrupted data after succesful installation!

#28 - PS4 News - April 29, 2010 // 6:22 am
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Another update to PRXDecrypter is attached below, although it's an unofficial release from homebrew coder hrimfaxi ( it apparently works with Metal Gear Peace Walker (new key tag as UNO, 0xD91613F0) and a few other games (Ikki Tousen Xross Impact and Uno) to decrypt eboot.bin for use with PSP CFW.

#27 - PS4 News - March 29, 2010 // 1:44 am
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Attached is PRXDecrypter 2.4b, with the changes as follows:

2.4a --> 2.4b
- Decryption error for an old key, tag 0x4C940AF0, fixed.
- Decryption key added for pops_04g.prx from 6.XX firmwares - tag 0x457B1EF0
- Slightly more information when encryption is likely to fail (SHA-1 check warning)
- NOTE: key for tag 0x2E5E10F0 does not appear to be working due to a new encryption method. I'll look into it.
- New EBOOT.BIN key added for tag 0x2E5E12F0. As above, might not work.

#26 - turgo - March 8, 2010 // 6:45 pm
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has any one bought and patched the psn game ftb3? i would like to know how if it is possible. would like to play on cfw as i am on ofw right now. thanks.

#25 - PS4 News - March 7, 2010 // 3:08 am
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Attached is PRXDecrypter 2.4 which now supports all keys up to 6.20. He missed this key though:

[Register or Login to view code]

Update: 2.4a now attached below, changelog:
2.4 --> 2.4a
- New EBOOT.BIN key added - fixes "tag error 0x2E5E10F0"
- Can extract the nand_updater/lfatfs_updater from old updaters again

#24 - LA MARAVILLA - October 13, 2009 // 2:46 am
I have used this method In 2 of my games:

1; Gran Turismo
2; Grand Thefet Auto

#23 - Padawan Gatsu - October 13, 2009 // 1:00 am
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Wow this is simply amazing news.. I had been away form the PSP scene for a few months due to a broken screen but there has been so much development.