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PS3 CEX to DEX to CEX Tutorial by Yayes is Now Available

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124w ago - Recently yayes of PS3ISO (linked above) shared a PS3 CEX to DEX to CEX tutorial and file pack for those interested in converting their PlayStation 3 CEX (Retail) console into a Debug / Test (DEX) unit and then being able to revert it back.

Below are the details from the file pack for those interested, as follows:

WARNING!! Backup your CEX Flash Dump!! Don't Deleted it or You in DEX Forever. (Update: A Solution is now posted by haze67).

I'm not responsible for any problems/bricks the members suffer and that they'll do it on their own risk. Make Sure You don't Have Spoofer Installed.



MultiMAN 04.06.02CEX / MultiMAN 04.06.02DEX


The Rest Of Tools Here

CEX to DEX to CEX and backup tools.rar (925.09 MB)

Archive Content

Backup tools

1. genGP3_v2.2
2. Open BDEMU HDD Manager
3. PkgView_1.3
4. ProDGForPlayStation3v420.1.0
5. PS3 Game Updater 1.41
6. PS3_Generator_Tools-330
7. PSN_Package_NPDRM

Convert tools

1. cex2dex
2. dtbImage.ps3
3. eEID_RKDumper
4. NAND-dtbImage.ps3

QA Flagging Tools

2. qa_flag_extra.pkg


1. 4.21DEX.PUP
4. 3.55DEX_MFW_Created_By_Yayes.PUP


  • All CEX Homebrew Fully Running On This MFW
  • Allow BDMIRROR From Internal PS3HDD (you must Use mmCM Cex Version) Tested Call Of Duty MW3
  • Patch self to Enable FSM PS2 Compatibility
  • Patch self To Allow Activation of PSN Content Offline (Tested ReactPSN 2.0)


  • No Need To Format your HDD
  • No Need To Installing LINUX As Well
  • If You Have Trophy Error After Convert To DEX Just Launch Rebuild Database From Recovery Mode

Before convert To DEX Copy updater folder to dev_hdd0

Part 1.1: Preparing The Flash Dump For DEX Firmware Installation

  • QA-Flag the system (instructions its in folder qa Flag or below)

QA Flagging - Write By yayes

  • Install This Firmware CFW355-OTHEROS++-SPECIAL.PUP then install qa_flag_extra.pkg then run this app
  • If you want to check whether your firmware qa flagged go to system setting scroll down to network setting (don't enter network setting) then pres L2 + L1 + R1 + R2 + L3 + D-pad Down
  • Thats it, the “Edy Viewer”, “Debug Settings”, “Install Package” Menu will now appear.
  • After You enable qa_flag On your console install 3.55kmeaw (i'm not including this firmware)

Translated from Indonesian:

  • Once installed Firmware CFW355-OtherOS + +-SPECIAL.PUP (use USB)
  • Then install qa_flag_extra.pkg Run
  • Check Your System Is Already Successful qa_flagging
  • Go to system settings> to network settings (Do not Go to the Network Settings) then press L1 + L2 + R1 + R2 + L3 + Down Arrow Direction
  • Will Appear Menu "Edy Viewer", "Debug Settings", "Install Package"
  • After that Install Kmeaw 3:55

Continued from Part 1.1 (Above)

  • Use multiMAN (referred to mM hereafter) 04.04.04 or later/MemDump to dump the FLASH (I used the mM-dumped one instead, even though the MemDump/mM dumps are the same as each other, hash-wise) make sure you have dtbImage.ps3.bin in your usb for nor console (for Nand Console rename NAND-dtbImage.ps3.bin to dtbImage.ps3.bin)
  • Use flatz's EID root key application on the PS3 once installed by executing it without having any USB dongles plugged in and the key should be dumped in the "/dev_hdd0/tmp/" path
  • Use Gunner54's CEX-to-DEX application to patch the flash dump
  • Double-Click (tap) on the DEX TargetID-modified dump renamed to have ".EID0.NORBIN" or ".EID0.NANDBIN" extension in mM 04.04.04 or later in order to change the TargetID from there

Restart the system by:

  • Exiting mM and returning to the XMB by pressing the PS button, and selecting "Quit Game"
  • Selecting the "Users" menu in XMB, selecting "Turn Off System", then selecting "Yes" after you have selected "Turn Off System".
  • Pressing the button on the PS3 after it has been shut down.

Part 1.2: Installing DEX Firmware

  • Having an official 3.55 DEX firmware PUP on a USB memory dongle in the "USB:\PS3\UPDATE\PS3UPDAT.PUP" (must be named as such) directory:
  • Install it in XMB via the "Settings" XMB menu, and then select the "System Update" option, and then;
  • Select the "Update from storage media" option whilst having the "Turn system off automatically after update" option unchecked, providing that the option is there, then follow the instructions from there.

Part 2.1: Rolling Back to CEX

  • Having installed the official DEX 3.55 firmware now, Use mM again, but this time, use the original CEX flash dump, and select it in order to change the TargetID back to the original TargetID (mine was 87 = CEX-UK)
  • Exit mM and returning to the XMB by pressing the PS button, and select "Quit Game", and then from there, restart the system by:
  • Selecting the "Users" menu in XMB, selecting "Turn Off System", then selecting "Yes" after you have selected "Turn Off System".
  • Pressing the button on the PS3 after it has been shut down.

Part 2.2: Installing CEX Firmware

  • Having the KMEAW 3.55 (CEX) firmware PUP on a USB memory dongle in the "USB:\PS3\UPDATE\PS3UPDAT.PUP" (must be named as such) directory:
  • Install it in XMB via the "Settings" XMB menu, then select the "System Update" option, and then;
  • Select the "Update from storage media" whilst having the "Turn system off automatically after update" option unchecked, providing that the option is there, and then follow the instructions from there.

To summarize, I had to restart my PS3 every time I had to install the firmware after the TargetID changeover and I had to install it via XMB, as it was safe enough for me to do so.

Also, to successfully revert back to CEX, make sure your console is QA-flagged, you're using the newer mM versions (CEX VERSIONS ONLY, otherwise you'll get an error) as the flash-writing capabilities are improved, AND as a safety precaution (nobody says this in their tutorials, but I do it anyway as a safety precaution), make sure you install/have already installed the official DEX 3.55 firmware WITHOUT the Downgrade Support before going back to CEX.

Part 1: QA Flagging Your Console

2. Install qa_flag_extra.pkg and run it. To Make Sure You Have Succesfully Integrated qa_flag in your console go to network setting (don't enter network setting) and press L1+L2+L3+R1+R2+Directional button Down and you can see edyviewer, debug setting, install packages menus
3. Turn on system Update DEBUG in debug setting

Q: Why I Must qa_Flag My Console ?
A: This Need When revert Back to Cex So We Can AVoid Brick

Part 2: Dump Your Flash And Root Key

1. Check whether your console nand or nor with MinVerChk
2. Install Latest multiMAN (CEX Version)
3. Plug your usb to your PS3 and Open multiman and Open Filemanager (select+start) Select any file > press O > open in hex viewer > press Select+start > choose yes on option dump your flash storage (Otherwise Choose NO) file will copied to USB extension .norbin (nor console) Or .nandbin (nand console)
4. Install eEID_RKDumper.pkg then remove your USB then run eEID_RKDumper
5. Open multiman go to file manager
6. Open folder dev_hdd0/temp then copy eid_root_key to usb (48bytes)

Part 3: Convert Your CEX Flash To DEX Flash

1. Extract cex2dex.rar
2. Load your Dump Flash in tab Nor/Nand Flash Dump
3. Load your Root key in Metldr Dump TAB

Click CEX > DEX and save file with name 355DEX.EID0.NORBIN (for nor console)

355DEX.EID0.NANDBIN (for NAND console)

Part 4: B Convert Your Console To DEX Machine

1. Copy 355DEX.EID0.NORBIN (nor Console) to USB and plug it to your PS3
2. Open multiman > filemanager then double click 355DEX.EID0.NORBIN in USB and Choose yes>yes>yes
3. Quit multiman
4. Turn off your PS3 Using Controller PS3 (Don't Turn OFF Using Power Button)
5. Then Power on Your Console Using power button
6. Install 3.55DEX.PUP from XMB

Revert Back To CEX

1. Install 3.55DEXOFW (not downgrade one) then install multiman CEX (Latest)
2. Then Flash You Console Using Flash Cex You are previously dump
3. Turn off your PS3 Using Controller PS3 (Don't Turn OFF Using Power Button)
4. Then Power on Your Console Using power button
5. Install 3.55kmeaw.PUP from XMB

Note: You must on 4.21 DEX firmware to be able to launch PS3 3.6+ games.

Run 3.6+ Games on DEX

Preparing the PS Update

1. First use PS3 Game Updater (or the Manual Method) to get the newest Update pkg for the game
2. Then fire up Pkg View and extract the BCUS98295 dir into any dir -lets just call it targetdir.
3. Extract psn_package_npdrm.exe into this dir
4. Create a .txt into this dir and fill it with:

[Register or Login to view code]

Rename the .txt file "package.conf". Where BCUS98295 is the Title ID of your game and Packageversion has to be the Number of the Patch you downloaded.

5. Create A .txt into this dir and fill it with

[Register or Login to view code]

  • Then rename .txt file to repack.bat
  • Then run it (new PKG has just been created)
  • Install it to your PS3
  • On debug setting (on your console)
  • Navigate to "Boot Mode" and select "Release Mode".
  • Below, in "Blu-ray Disc Access" select "BD Emulator (USB)".
  • And below, to use the maximum speed of your HDD, select "HDD Native".
  • Drag your ps3_game folder to genGP3.exe
  • And it will create .GP3 file located in same dir your PS3_GAME

Warning!!!!! This Step will format your USB Hardrive

  • Connect the USB hard drive to your pc and open ps3gen.exe
  • On the command tab choose BD emulator hdd utility
  • Choose your USB Drive Then choose Format HDD for BD Emulator
  • In file tab choose open project then locate your .GP3 file
  • Click on "Build".
  • On the new window choose second tab (For BD Emulator (*.emu)) then create your image files (*.emu)
  • Open bdemu hdd manager.exe
  • Load your drive then write image file choose your *.emu files that you just created
  • Plug your bd emulator (USB Harddrive) to right usb slot then restart your console
  • Start game from BD icon

Additional Resources

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Comments 100 Comments - Go to Forum Thread »

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#40 - farenheit - 123w ago
farenheit's Avatar
So your suggesting i should just stay on DEX? What benefit would DEX give me if a newer cfw turns up?


#39 - G Sus - 123w ago
G Sus's Avatar
itskamel 3.55 works pretty much like kmeaw 3.55 anyway

#38 - G Sus - 123w ago
G Sus's Avatar
why do you want to revert to cex? a lot of bricks happen when converting back.

i wouldn't describe any case of converting back as 100% safe, even with QA flag reset. i'd advise staying on dex and see what comes available in next few weeks or maybe even days.

#37 - farenheit - 123w ago
farenheit's Avatar
I have a question, I've converted to Dex without using this tutorial but i never QA flagged.

I want to convert back to Cex but not doing the QA flag is worrying me that i may end up with a brick

Is it still safe??

#36 - gsr325 - 123w ago
gsr325's Avatar
Sounds like a lot of work. Is there a step by step video?

#35 - AdilAliraqe - 123w ago
AdilAliraqe's Avatar
Flash Cex and Dump File

#34 - delger - 123w ago
delger's Avatar
Big thanks Windrider42, I"ll forward your reply to the guy who'll fix my ps3.

#33 - windrider42 - 123w ago
windrider42's Avatar
When your ps3 was downgraded, you need to make sure it was de-hashed. So then its safe to update to a newer firmware.

Your using Rogero was not good because it has built in spoofer. Rogero has posted about this on his main site for Rogero CFW: tortuga-cove.com/forums/viewtopic.php?f=127&t=525&start=90#p8443

For all owners of PS3 consoles downgraded from 3.55+ using hardware flashers and Rogero_CFW_v3.x

To "Dehash the PS3" (Reset the syscon) and have the PS3 back to normal safer mode like any original ( non Downgraded ) PS3, here are the steps :

1- After completing the downgrade process and having Rogero CFW 3.x up and running, make sure you have the Blu-Ray drive attached or the QA Toggle package won't work.
2- Download the Rebug QA_Toggle package toggle_qa.pkg
3- Put the "toggle_qa.pkg" on USB and Install it on the PS3.
4- Run the "Rebug Toggle QA" from XMB, the screen will go Black and you will see HDD Led activity then if all went fine you will hear one Beep and the PS3 will Restart back to XMB.
5- If you want to make sure QA flag was set, go to "Network Settings" then apply the following key combo (all at the same time):

L1 + L2 + L3 (press left stick) + R1 + R2 + dpad_down

You should see Edy Viewer, Debug Settings, and Install Package Files if done correctly.

6- Now that you have QA flag set, Turn Off your PS3 and Turn it back on but into "Recovery Menu"

This Step is very important, it have to be from "Recovery Menu" and not a normal Update from XMB or the PS3 will Brick.

Here is how to access it:

a. Turn off PlayStation 3.
b. Turn it on and keep Holding The power button down; The system will turn on and turn off once again.
c. Once the System has been shutdown, Turn it on again and keep Holding The power button down (you will hear 1 beep first, keep holding) until you hear 2 consecutive beeps
d. When you hear the 2 beeps take finger off power button.
e. You will be prompted to plug in your controller via usb and then hit the PS button
f. The Recovery menu will pop up.
g. Last Option #6 is what you must use "System Update"

Alternatively you can simply use CondorStrike's Updater package to enter Recovery Menu directly from XMB without going through the boot sequences. --> Condor Updater v2.0

7- Now you must have any 3.55 OFW or CFW with original (non Patched) LV1 in your "USB:\PS3\UPDATE\PS3UPDAT.PUP", here's a link to 3.55-Kmeaw --> kmeaw355.PUP

8- Select the last option of the Recovery Menu --> System Update, then when prompted press and hold "Start+Select" for 5 seconds to start the update.

Once finished the PS3 will restart into XMB with the Syscon hashes reset back to 3.55 in both "ros0" and "ros1" and your PS3 is back like any original/non Downgraded PS3 that can use any CEX/DEX Fw without having to worry about disabling LV1 checks.

Now if someone did the downgrade for you, they should have done it. If you did the downgrade yourself, then it can be unbricked. Or get the person who did it to unbrick it. Well you have given good advice above.

Quote Originally Posted by flaviud View Post
how can i remove a spoofer? sorry but i have no idea

Which spoofer are you running. I can't remember the name of the one, but it has its own uninstaller when you run it, by pressing a button sequence.

#32 - G Sus - 123w ago
G Sus's Avatar
i've just read through the tutorial at the beginning of this thread, and i've got to say its a pretty full and comprehensive tutorial. I think if i had read this first, i would have probably given up and never tried going to dex.

But really ask yourselves first, is it really all worth it just for the sake of a few games. Cex to Dex is pretty safe but going backwards results in numerous bricks.

#31 - flaviud - 123w ago
flaviud's Avatar
how can i remove a spoofer? sorry but i have no idea


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