PSX BIOS Dumping guide

[ShendoXT]

March 11th 2011 - Updated BIOS dumper to version 2.5.
June 24th 2009 - added uLaunchELF method as suggested by Mezmorizingmage.

Required hardware:

• Console capable of booting burned CDs.
• PlayStation Memory Card.
• PlayStation Memory Card reader or a DexDrive.
• Cd-Writter.
• Blank Cd-R.

Required Software:

• BIOS dumper (attached).
• BIOS merge application (attached).
• Software to transfer saves from Memory Card to a PC:
  • Memory Card Captor Sakura (for Memory Card reader) if you are using Windows.
  • PSX Memory Card Manager (for Memory Card reader) if you are using Linux.
  • DexPlorer (for DexDrive).
  • uLaunchELF for PlayStation 2.

Getting started:
The first thing that you need to do is to burn the BIOS dumper (psx.exe) to a Cd-R.
I used Nero but any burning software should do the trick.

Warning: Before you start dumping make sure that your Memory Card is completely blank,
otherwise BIOS segments may not dump properly.

Booting a dumper:
Put the dumper disc you burned earlier in your PSX and start it.

After a while a menu should show up.


From there you can choose which segment of the BIOS you want to dump.
To start dumping press X.

Dumping usually takes a minute so be patient.
Once it's done you should get a message telling you to reset the console.


After a reset go to the Memory Card screen.
You should see 15 saves with the name "BIOS DUMP".


Transfer saves to PC:

PlayStation MemoryCard reader method:
Connect a memory card to your PC and open the Memory Card Captor Sakura.
Important: Make sure that you install the UserPort driver you got with the software.


Press "SLOT 1" to read the Memory Card data.
Now press "IMG R" and save the card with the .mcr extension and name it after a part you dumped (eg "Part1.mcr").

DexDrive method:
When you save a card use either a MemcardRex or PSXMemtool to convert .gme to .mcr.
Name each card after a part you dumped (eg "Part1.mcr").

uLaunchELF method:
Copy the save from a PSX memory card to the PS2 memory card using the PS2's built in memory card manager.
Connect USB stick to the PlayStation 2 and run uLaunchELF. Browse to your memory card and copy the save called BEFFFFFFFFFFBIOSDUMP to your USB stick.
After that connect the USB stick to the PC and use the import feature of MemcardRex to open the save.
Now just go to File->Save as... and choose the .mcr format.

Dump the other parts:
When it's done disconnect a Memory Card, connect it to PlayStation and delete the BIOS DUMP saves.
Repeat the steps above for the other four remaining parts.

Merging a BIOS:
Unpack the BIOS merge application for your OS and put it in some directory.
In that same directory put all dumped parts (.mcr files).
Run the application and you should get a file named SCPHXXXX.bin.



Look at the bottom of your console to get the model number (as you can see mine is SCPH-9002).


Rename the SCPHXXXX.bin to match your PlayStation model number.

Now run the PlayStation emulator of your choice to check if the BIOS is working.


If it's working then congratulations, you successfully dumped your PlayStation BIOS.


If you have any issues or you think I should add or correct something feel free to send me a PM.

Attached Files

	biosmerge_linux.zip (5.0 KB, 623 views)
	biosmerge_windows.zip (124.5 KB, 3096 views)
	Dumper.zip (12.6 KB, 872 views)

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Last edited by ShendoXT; March 11th, 2011 at 20:57..