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August 4, 2012 // 1:30 am - Today PlayStation 3 developers mysis and eussNL on the Wiki have posted a method to get the PlayStation 2 (PS2) Software Emulator working on 3.55 CFW without a DRM-infected Cobra USB dongle for all PS3 Fat and Slim consoles.

Download: PlayStation 2 (PS2) Software Emulator Files for PS3 3.55 CFW / PlayStation 2 (PS2) Software Emulator Files for PS3 3.55 CFW (SRC)

To quote: Getting PlayStation 2 Software Emulator working

Method (on Firmware 3.55, without! Cobra-USB Dongle or Downgrade) for all consoles (fat & slim).

1. Replace following files on your consoles /dev_flash/ with the ones included in this archive p3dwik-ps2compatfiles.rar
2. Get into Factory Service Mode (FSM Tool/Dongle)
3. Insert your Original PS2 Game Disc
4. It will run.

Note: Backups won't work. You're getting the compatibility of the 2.60 software emulator with all of its bugs.

A possible compatibility lists:


PS2 Compat. flag

All consoles have hardware information. In GameOS you can call Lv2 Syscall 393 (0x189) sys_sm_get_model to get your consoles information. In Lv1/Hypervisor its in the repository nodes sc 0x5B lv1_get_repository_node with Parameters "sys","hw","config" usually noded as "sys.hw.config#0" or something.

Result examples:

[Register or Login to view code]

In binary formation:

[Register or Login to view code]

XMB checks this flag and if == 0, it will give following message: "This model of the PS3 system is not compatible with PlayStation 2 format software."

Those interested in running PS2 games on their PS3 console may also wish to check out the previous Open PS2 Loader v0.8 for PS3, PS3 USBLD Loader Source Code and USBAdvn Patcher and PS2 HDD Support & Discless ELF Launching from PS3 XMB articles as well.

Finally, in released news IngPereira has made available a PS2 DEX Boot 4.11 4.20 (Test) and below is also a PS3 EVO 1.0 video and release details by SONIC_BH for those interested, as follows:

Hi I just make a debug app that use some syscalls to do a reset into PS2 Lpar like boot_ps2 does, it should work on dex 4.11 or 4.20 but in these fw there is ps2 netemu instead of softemu so i need someone with an original disc of playstation 2 inserted on bd-drive and launch this test app and see what happens.

I am on 4.11 DEX but i don't have any original disc from PS2... This is basically the same thing that boot_ps2 does on 3.55 but there is a new emu file on dex 4.11 or 4.20 introduced on 3.70 with the use of PS2 Classics on PSN... This is not brick-risk, thanks to anyone who help me with this. Greetings...

1st - Download the file
2nd - Copy the file PS2 Evo v1.0.pkg to the root of a USB drive formated in FAT32
3rd - Install the .pkg from *Install Package Files*
4th - Insert a original PS2 disk on the BD
5th - Run the app and enjoy

PlayStation 2 Software Emulator on 3.55 CFW Without Cobra USB

PlayStation 2 Software Emulator on 3.55 CFW Without Cobra USB

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#1264 - teaynadesh - April 27, 2015 // 12:16 pm
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Thank you for Multiman Sir.

#1263 - ktgw11 - April 10, 2015 // 7:02 pm
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thanks for good soft. all the best.

#1262 - djmakis - March 27, 2015 // 1:58 pm
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thanks for the files, also from MixeryMaxe comes S-DMC, a Selfmade DMC for Cobra ODE users with details below:

Hallo comm

I would like to present an user project from two friends (GamersRS & esprit1711 from psXtools) and me. Around october 2014, a friend asked about the possibility of a microcontroller based project. And i just said "of course" Chipwelt from psXtools had built a "switchmod" as alternative methode to the DMC and GamersRS asked me about a "microcontroller based switchmod".

So the idea from the S-DMC was born

I had built a microcontroller (PIC16F628A) based circuit and had written a software in asm. The prototype looks ugly but it works

And here esprit1711 comes into play. He designed a real "eye candy" PCB and then the big tests began.

After finishing the big tests esprit1711 had kills few bugs on the PCB and i made an optimization the software for the PIC.
The final version was finished.

The S-DMC is for Slim models. The installation is simple, there are just 4 wires to soldering (+ 2 optionale, 1 LED for swap-magic signaling) and one little cut one the power PCB of the PS3. The S-DMC simulate the switch positions from bd-drive so you are able to swap the disc and the PS3 don't get it

Despite of the cuts on the power PCB i was able to preserve the original PS3 eject function. Function of the S-DMC are:

  • 1 click on eject button = normal official disc eject
  • hold eject button(~10sec) = normal official bd-drive reset
  • double-click on eject button = swap-magic for cobra ode

The official release was in early 2015 and until today there are no problems.
The end product works like a charm

More information:

  • First present thread:
  • Official support thread:
  • Installation instructions:

Credits goes to:

  • Chipwelt
  • GamersRS
  • esprit1711

Have fun

Update: Hi, today i received new information from Chipwelt. Ok as i said, i don't have a ODE and i don't use the S-DMC.

It can also be used without ODE to swap psx (and *ps2) backups even on OFW.
e.g. insert an original psx game in the ps3 and wait until the disc icon is appear in xmb, than double-click on eject button (for swap-trick) and now you can insert any psx backup and play again, EVEN on OFW .... crazy that i didn't know that.

*ps2 backups of course only on bc models. But in the same way as with psx games. Ok, at this time the S-DMC is only for slim models but this can be changed if there is a demand

Chipwelt released a video in november 2008 with a switch-mod and show a ps2 swap on a cecha model

#1261 - ori0 - March 24, 2015 // 3:42 am
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Thanks for keeping the PS3 going strong!

#1260 - gurpreetbal - March 15, 2015 // 9:45 am
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thanks for uploading

#1259 - PS4 News - March 7, 2015 // 1:41 am
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7 - 3 - 2015 Cobra ODE News - Update

We are pleased to present the Cobra ODE FW 2.4 wich properly adds support for the Emu USB QSB and addresses a number of small bugs we found in particular with the drive door support for 4k consoles. We have updated the DMC triggering mechanism for enhanced performance.

The game database file has also been updated to include many new titles.

We are unable to fully support FAT PATA consoles with DMC owing to issue with BD recordable media compatibility and a multitude of different bluray drive daughterboards. FAT SATA consoles with BMD-31 will remain supported. If you have purchased DMC for PATA FAT consoles, you may return it to your reseller for a refund.

DMC will be kept fully supported on FAT SATA (BMD-31), 2k/2k1, 2k5 and 3k consoles.

Since we have removed the Hardware Passthrough mode from ODE FW 2.4, we suggest that users use ODE FW 2.2, if they wish to update the OFW of their console to 4.66. ODE FW 2.2, still has the option to enable HW Passthrough mode providing you are using the USB Clip on PCB. After updating the console OFW to 4.66 you can update to ODE fw 2.4 again.

Finally, from coalchamber1022: (DMC + OS 4.7 + CECH-2001A)

Hi Guys, Formalities...

PS3 Type: CECH-2001A
PS3 OS: v4.7
ODE: v4.2
ODE FW: 2.4
DMC: v1.0
Boot Disc: ModNation Racers (BCAS20105)
Swap Disc: Verbatim 25 GB 6x SL (LINK)
SD Burner: Generic from Amazon (LINK)

CFG File:

[Register or Login to view code]

I got things hooked up, loading a game is still a bit of a PIA but it works.

  • After plugging in my HDD with my games on it I plug my PS3 into power then boot it up.
  • I then put in by Boot disc I see the cobra menu and select a game.
  • I then get a what looks to be a video of just the cobra icon at that time I eject my boot disc then just put the boot disc back in. It then loads up the game selected in the XMB
  • I then hit 'x' to start the game the bootdisc then pops out then the ode flashes red/blue so i leave the boot disc and let it suck back in.
  • Then in a few seconds it ejects again then ODE flashes green/blue I then pop in swap and BADABOOM it loads up.

With that many ejects and loads I am anticipating my BD drive to crap out soon. Hopefully cobra team can lower the number of ejects but in any case it works!!

#1258 - Suprising - February 18, 2015 // 11:02 am
Suprising's Avatar
I just upgraded my old Cobra to a newer updateable version today!

On 4.66 it seems Sony are catching and winning the race with ODE's. Anyway, I do have a swap disk which means I am sorted for now...

26 - 2 - 2015 - Cobra ODE News - Information

All Cobra ODE users should avoid updating to OFW 4.70 until Cobra Team has carried out extensive testing.

Some videos on 4.70:

#1257 - jodson - February 16, 2015 // 11:41 am
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I do not think it worth buying it go with what we have today with all PS3 already possible and with the minimum of expense.

#1256 - devbabdev - February 16, 2015 // 10:08 am
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should i need cobra dongle?

#1255 - Isleofdoom - January 30, 2015 // 7:30 am
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Multiman shares alot of info between the cfw cobra port which made me look into the issues with controller synch n are all within mm causing issues due to certain files where synch needs to be patched properly in with the file.

I already ran the tests and intact does work correctly thus also giving back the exit screen