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February 13, 2011 // 9:27 pm - Just under two weeks ago PlayStation 3 hacker KaKaRoToKS first announced the PS3 Modified Firmware Project, and today PS3MFW Builder v0.1 is released.

Download: PS3MFW Builder v0.1 / PS3MFW Builder v0.1 (Windows) / PS3MFW Builder v0.1 (MAC OS X) / PS3Tools / PS3Keys

From the included ReadMe file, to quote: INTRODUCTION

For years, the security system of PS3 remained unbreached because Sony had a very good defense mechanism: Consumers could use it for more than just gaming by installing Linux via the "Other OS" feature.

Therefore there was little motivation for security researchers to investigate the PS3. However, then Sony (or SCE, SCEA, SCEE or whatever, we aren't exactly sure what is going on there anymore) made an unprecedented move:

Not only did they introduce a new PS3 model that no longer allowed the installation of an Other OS, but with a firmware "upgrade" they removed it from previously sold consoles.

While removing advertised features from a product (several years after its purchase!) is blatantly unlawful, having highly paid lawyers apparently allows you to get away with it- in a legal sense.

But when the law fails to protect the people, then some of those people, being clever and resourceful, help themselves. And that is what happened here. Sony sunk its own battleship.

PS3MFW is the next step in the process of returning to consumers control over their own hardware. Your PS3 belongs to you. You didn't lease it, and you signed no contract when you purchased it. It is your right to use it however you choose. It is your responsibility to do so within the legal boundaries.

PS3MFW allows you to tailor your PS3′s firmware to your specific needs, giving you a level of control you previously lacked. PS3MFW is open source. That means it is completely transparent, and anyone with the necessary programming knowledge can help to improve it and create new plugin tasks.

It is with great pleasure and joy that we are now able to present you with the first public release of PS3MFW Builder. A lot of hard work went into this during the past five weeks, by some incredibly dedicated and inspired people. We would like to thank everyone who contributed, the people who got this project underway, and those who did all the programming and testing.

PS3MFW Builder v0.1 has been successfully tested on all major PS3 hardware revisions, and in conjunction with OFW 3.10 - 3.55. It is NOT compatible with OFW 3.56.

Remember that this is only the very first release of PS3MFW Builder, version 0.1. With your support and feedback, we intend to create the definitive PS3 firmware solution that makes all other closed-source custom firmwares obsolete.

PS3MFW Builder is not distributed with any program code copyrighted by third parties.

KevinButler, you sunk your own battleship.


To use PS3MFW Builder, the following is needed:

-The latest version of the f0 tools

-Tcl/Tk 8.5 (

PS3MFW Builder v0.1 - PS3 Modified Firmware Builder Arrives

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#21 - Jes03 - February 14, 2011 // 3:15 am
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Go back through the pages and install the ps3keys in the proper directory.

I've been reading and no-one has commented in actually installing it yet. I don't want to be a guinea pig so I'm waiting for a few successful others first.

Another thought, can we edit current MFWs? Example, if I want to remove the PSN from movies and games from kmeaws mfw?

#20 - SHAKCEYA - February 14, 2011 // 3:05 am
I have win7 it gives me FATAL ERROR: Could not rebuild file lv1.self.self : child process exited abnormally

#19 - Jes03 - February 14, 2011 // 1:17 am
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Anyone game enough to install it? I've yet to hear anyone install their own MFW.

It's worked, I now have my own MFW but not sure if I should install it?

I went from Waninkoko to kmeaw as its more stable and it also runs linux so how would this differ? Would lv2 still run so I can run linux and will homebrew apps that ran in Waninkoko run again in this as they refuse to run in kmeaw?

#18 - jan777 - February 14, 2011 // 1:16 am
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Say, we build a CFW with version number 3.56, would that let us in on PSN?

I'm not saying use OFW 3.56, but 3.55 renamed/re"versioned" to 3.56.

#17 - Jes03 - February 14, 2011 // 12:54 am
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I deleted it, reinstalled it and this time a ps3keys dir turned up.

thx, it looks like it's working now.

#16 - SwordOfWar - February 14, 2011 // 12:51 am
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it is like:


the ps3keys folder is beside the ps3mfw folder, NOT in it. all the key files go directly inside the ps3keys folder.

#15 - Jes03 - February 14, 2011 // 12:47 am
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Quote Originally Posted by JBoxMods View Post
in the parent directory that ps3mfw installed to, there will be a "ps3keys" directory. the keys go in there. as for the tools... well, there is a tools folder within the ps3mfw directory, but it already has the tools in it on a windows installed version.

There is no PS3KEYS directory anywhere, so where do they go?

I have a ps3mfw dir, does the ps3keys dir go in that or next to that?


I've tried it both ways and still gives me the same error.

#14 - SwordOfWar - February 14, 2011 // 12:39 am
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With this tool you no longer need to download other people's .pup files (such as fake 3.56 .pup) because you can simply make your own .pup!

#13 - Killone - February 14, 2011 // 12:33 am
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This is not a good idea to rls this tool. I can see the first post. My PS3 is bricked help or CFW 3.56 "Fakes". We will see

#12 - Jomomma76 - February 14, 2011 // 12:33 am
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installing mine right now on PHAT launch 60g...