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Thread: How to downgrade or use cfw on ps3 with v3.56 OFW and up!

  
  1. #1
    Powerslave is offline Gone fishin -Hacks Titan
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    Default How to downgrade or use cfw on ps3 with v3.56 OFW and up!

    You can't - case closed!

    Don't ASK, Don't TELL!


  2. #2
    Powerslave is offline Gone fishin -Hacks Titan
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    NORway - Teensy++ 2.0 Flasher Software Released

    Judges over at psx-scene.com has released NORway - a PS3 NOR flasher for Teensy++ 2.0 which can be used to downgrade firmware and other interesting projects.
    Here comes my initial release of a NOR flasher soft for the PS3 called 'NORway'. I know, there are other 'WIP' projects, but I got a little impatient, so I've decided to create my own solution. It's a port of 'noralizer' by marcan, a pretty good working NOR flasher implementation for another FPGA board. PS: I've already managed to downgrade my OFW 3.61 to CFW 3.55. There're minor things to rule out, but expect a downgrade tutorial coming soon.
    Keep looking here for updates, but as of now, the first post applies!

  3. #3
    Powerslave is offline Gone fishin -Hacks Titan
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    -MORE-

    Lots of wiring & techno babble, for you lazy geniuses.


    NORway v0.1

    This project has been ported for the Teensy++ 2.0 from the original NOR flasher tool
    ("noralizer" by Hector Martin "marcan" <hector@marcansoft.com>) that was used to flash
    AsbestOS onto the demo PS3 at 27C3, and for experimentation.

    Contents:
    \teensy\NORway.avrsln - Source code for the Teensy++ 2.0 (AVR Studio 5.0)
    \teensy\default\NORway.hex - Compiled hex-file for the Teensy++ 2.0 (AT90USB1286)
    \hwinstall\install-*.jpg - Some pics of how I've mounted the Teensy (CECH-2504A/B)
    \hwinstall\nor_testpoints.png - Connection diagram of the NOR testpoints (CECH-2504A/B)
    \serial_install.exe - Teensy serial drivers for Windows
    \README.txt - this file
    \NORway.py - PC Python client

    Hardware connections (see "\hwinstall\nor_testpoints.png"):
    PS3 Teensy
    A0-7 PF0-7
    A8-15 PA0-7
    A16-22 PB0-7
    D0-7 PD0-7
    D8-15 PC0-7
    CE# PE0
    OE# PE1
    RESET# PE4
    WE# PE5
    RY/BY# PE6
    TRISTATE# PE7
    GND GND

    The Teensy requires a 3.3V voltage regulator! 5V trace has to be cut! Please refer to https://www.pjrc.com/teensy/3volt.html


    DON'T CONNECT THE VCC SOLDER PADS TO ANYTHING!

    Connection diagrams for other boards can be found at:
    Hardware flashing - PS3 Development Wiki

    Prerequisites for Windows:
    Python 2.7.2 (http://www.python.org/ftp/python/2.7.2/python-2.7.2.msi)
    pyserial 2.5 (http://pypi.python.org/packages/any/...-2.5.win32.exe)

    Usage:
    Install Python + pyserial (see "Prerequisites for Windows"). Install drivers. Connect Teensy to your PC. Flash Teensy with "\teensy\default\NORway.hex" and reset it after completion. Start Windows' "Device Manager", expand the "Ports (COM & LPT)" node, you should see something like "USB Serial (Communication Class, Abstract Control Model) (COM4)". This tells you that "COM4" (or whatever shows up) is the COM port used by Teensy.

    At the command prompt enter "NORway.py" to display help.

    Procedure to dump your flash:
    - PS3 is turned off
    - At the command prompt enter:
    NORway.py <your com port>
    - Turn on your PS3, it shouldn't boot
    - At the command prompt enter:
    NORway.py <your com port> dump flash.bin
    - When dumping is finished enter:
    NORway.py <your com port> release
    - Power off your PS3 (disconnect Teensy if PS3 doesn't boot when restarted)

    Dumping takes about 3 minutes. A file "flash.bin" with a size of exactly 16 MB (16.777.216 bytes) has been created in your current directory.

    Flashing is rather slow. Writing a complete flash with the "write" command takes about 2 hours. Might be improved in future versions...

    IMPORTANT:
    Before you flash your PS3 with anything new, make sure that the content of your dump is correct (e.g. compare ros0/ros1 area of your dump against "CORE_OS_PACKAGE.bin" from an actual PS3UPDAT.PUP of your current firmware). And keep your original dump in a safe place. You might need it.

    It's tested on Win7 x86, but should also work just fine on any x86 Windows >=XP.
    Basically it should also work on Linux, but I didn't test. If you're running Linux, you
    probably know what to do. ;-) Serial drivers are not required for Linux.

    Unfortunately I couldn't manage to make it work on any x64 version of Windows, because of the Python pyserial module.

    Thanks to "marcan" for the original implementation.

    -- judges (judges@eEcho.com)

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    Powerslave is offline Gone fishin -Hacks Titan
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    *UPDATE* - Also on Front Page

    Dospiedras1973 over at elotrolado.net (Google translated to English) has posted a method how to downgrade PS3 fat and slim models with original firmware v3.70 to kmeaw CFW v3.55 by changing the NOR flash contents. Here's a brief summary of the steps involved; dump the NOR flash using a hardware flasher (Eg. NORway on Teensy++ 2.0, Progskeet or Infectus), modify the dump to enable factory service mode, write the modified binary back to NOR flash, downgrade to CFW v3.55 kmeaw. You can find the files needed as a single pack available for download here.

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