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February 13, 2011 // 8:27 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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#101 - carmil - March 6, 2011 // 5:08 am
carmil's Avatar
Got the same issue with the impossibility yo use dev_blind and anything else involved with write permission on flash (tried all pkg available) probably due to some mess.

I reinstalled Kmeaw on Kmeaw in recovery mode after no bootup of PS3 nothing lost of course but this was one of the issues. Today after installation of Multiman 1.16.05 or some other miracle I am not able to explain everything went back fine, dev_blind mounted again and push_cert (for example) working...

Thanks to the PS3 saint...

#100 - severusx - February 26, 2011 // 5:49 pm
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Im actually able to write to dev_bling using the multiman FTP, thanks though. whomps, you have been moving links to games and stuff into it? Or the links to the utilities like Game Data and stuff?

#99 - ilmujalla - February 26, 2011 // 11:11 am
ilmujalla's Avatar
Hi seve. You need to use dev_blind app. mount your dev_blind and then open awesome filemanager to replace with: Dev_blind\vsh\resource\explorer\xmb.

you can't see the de_blind drive using the ftp server dunno why.

#98 - whompus60 - February 26, 2011 // 3:14 am
whompus60's Avatar
Yeah it's a pain but never a bad thing.

What I have done so far is make psn area another game area. I am going to try to figure out how to make the package files when installed with installer under there to only show up there and not in game area as well.

I may not be able to but think it would be nice.

#97 - severusx - February 26, 2011 // 2:39 am
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Ahhh makes sense! Taking some of my own advice and reading the instructions for once helps. Thanks.

#96 - whompus60 - February 26, 2011 // 1:22 am
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It may be something to do with the firmware you are using. Some things don't work the same on 3.41 as 3.55. Maybe try the new hermes bum that was released for 3.41. I think I remember it said it has ftp build in it now. Would be easy enough to try it and see how it goes.

You must open dev_blind folder not dev_flash when you want to copy back.

#95 - severusx - February 26, 2011 // 1:15 am
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that's what i'm trying too.. also tried blackbox. I'm on Hermes CFW 3.41

#94 - whompus60 - February 26, 2011 // 1:14 am
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Not sure. What ftp on ps3 side you use? I use filezilla with multiman.

#93 - severusx - February 26, 2011 // 1:07 am
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I tried using dev_blind but i am still getting a permission error in filezilla when i try to copy the xml back. what am i doing wrong?

#92 - whompus60 - February 26, 2011 // 1:02 am
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I used dev_blind. You can add to areas also. This attached file is my psn area now with install pkg under it.