To quote from a (now removed) Tweet of Squarepusher2: "BTW Mathieulh I know you gave durandal that CEX-DEX ZIP, that it wasn't you that bundled that up, and you were not supposed to do so either"

**WARNING** IF THIS TUTOTIAL ISN'T FOLLOWED TO THE LETTER YOU MAY BRICK, THE AUTHOR (THAT WOULD BE ME) DENIES ALL KINDS OF RESPONSABILITY SHOULD YOUR PS3 GET DAMAGED IN ANY WAYS. YOU KNOW THE RISKS **WARNING**

Requirements:

1. A playstation 3 on firmware 3.55 or below
2. A dongle to go to Service mode
3. A usb pendrive
4. A brain
5. The author of this little trick.
6. Have your pc connected directly to the ps3 on ethernet with the ip set to 192.168.0.100 and the hostmask to 255.255.255.0 (make sure no firewall is running, not even windows one, this may prevent your console from connecting to the pc)

Procedure:

** PART 1 **

1. Set your console into service mode with any compatible dongle.

2. Put the content of the converter-console folder at the root of your usb pendrive.

3. Extract ObjectiveSuites-GetData on your PC.

4. Put the usb pendrive on the last usb port on the right of your console.

5. Run ObjectiveSuites.exe from ObjectiveSuites-GetData

6. You now have a few seconds to start your console, start it.

7. Objective Suite should display "PASS" and txt files will be created in the Temp dir. Once done, power off your console.

8. Get ALL these txt files from your temp directory and send them to the author (me) with informations about your playstation 3 model (FAT/SLIM, CECH* model)

** PART 2 **

9. You should recieve from the author (Yeah me again) a file called request_idps.txt

10. Extract ObjectiveSuites-SetIdps on your pc.

11. Put the request_idps.txt in your temp folder (MAKE EXTRA SURE IT'S THERE OR YOU WILL BRICK)

12. Run ObjectiveSuites.exe from the ObjectiveSuites-SetIdps directory.

13. Start the SAME CONSOLE YOU GOT THE TXT FILES FROM (If it's another console you WILL BRICK IT).

14. Wait until Objective suite displays "PASS" Then power off your console, at this point your console should be a Debug one.

** PART 3 **

15. You will now need to do a drive initialisation in order to use the bluray drive on your console. Put your usb pendrive on your pc, delete all the files you previously put in there, Put "Lv2Diag.self" from the "set up" directory at the root of your pendrive along with PS3UPDAT.PUP (that's 3.30 debug firmware)

16. Put the pendrive on the usb port on the most right of your console.

17. Power on the console, The screen will be black and the green led will stay lit, wait until it blinks and the console powers off, once it does the firmware will be installed.

18. Put the pendrive back on pc, delete the files you put in there previously, and copy the content of the "drivefix" folder to the root of the pendrive.

19. Put the pendrive at the usb port most on the right of your console and power it on.

20. The drive initialisation will then occur, wait a couple of seconds, then power off the console (you may have to unplug it from the AC)

21. Put the pendrive back onto the pc, delete the files you previously put in there, then copy the Lv2diag.self from the "finalize" folder.

22. Put the pendrive on the usb port on the most right of your console. Power it on. Your console will power on for a few seconds then power off.

CONGRATULATIONS YOU HAVE NOW COMPLETED ALL THE STEPS AND YOUR CONSOLE IS A FULLY FUNCTIONAL DEBUG BOX. YOU NOW JUST NEED TO POWER IT ON AND COMPLETE THE USUAL FIRST TIME SETUP PROCEDURE.

Please answer: when I bought my console the version was 3.50, now i'm on 3.55. Can I install the 3.30 debug?

Check here you can see your lower firmware:
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It's 3.50, also with the debug I can install 3.50 max?

You need to decrypt the SIG file to XML then add a simple line that specifies to get the IDPS data from your console. Then encrypt to SIG. The hard way is to decrypt (it took me allmost one hour and one more hour to build a program). The rest of the job is just google. Hint for decrypting... "O=O". THIS WILL JUST GET YOUR IDPS.

Thats The Stupidest Thing I Have Ever Seen, Besides The Fact That U Will Be Online With Install Package Files Etc, But You Arer Completely ****ed When A New Update Comes Out, Then When That Happens You Either Have To Buy New Ps3, Or Downgrade With Soldering (Pain In The Ass) So To The People With A 3.55 Or Below, I Wud Suggest Not To Do It, Even Tho It Has A Lot Of Upsides (Main One Being That You'll Be On 3.70 With Install Package Files, etc) Your ****ed When You Need To Update To New Version + There Is No Working FTP or File Manager Or Any Sort Of That On 3.70, Cuz It Needs Top be Signed So Ya

Thats The Stupidest Thing I Have Ever Seen, Besides The Fact That U Will Be Online With Install Package Files Etc, But You Arer Completely ****ed When A New Update Comes Out, Then When That Happens You Either Have To Buy New Ps3, Or Downgrade With Soldering (Pain In The Ass) So To The People With A 3.55 Or Below, I Wud Suggest Not To Do It, Even Tho It Has A Lot Of Upsides (Main One Being That You'll Be On 3.70 With Install Package Files, etc) Your ****ed When You Need To Update To New Version + There Is No Working FTP or File Manager Or Any Sort Of That On 3.70, Cuz It Needs Top be Signed So Ya