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December 7, 2010 // 2:31 pm - Since the release of PS3 Firmware v3.55 there is no sense in keeping the master key a secret any more - it has been released, along with unencrypted payloads, and a promise to release the source-code by PS3YES for a free PSGrade PS3 downgrader.

Download: PSGrade / PSGrade PS3 Hex Codes / psgrade_teensy_at90usb1286_16.hex by littlebalup

Of note, the downgrade hex will only work on PS3's with a firmware of 3.50 or below.

The same team which brought the PSN spoof for online support of jailbreaks now has also brought us a Free Downgrade HEX for the PS3! PS3YES has released un-encrypted HEX files for downloading.

They promise open-source code to be release soon, but find below pre-compiled HEX files:

PSGRADE AT90USB646-16Mhz Teensy++ 1.0
PSGRADE AT90USB1286-16Mhz Teensy++ 2.0

This is the last line from psgrade_ps3yes.hex

[Register or Login to view code]

Of note, The master key has been stated to be:

[Register or Login to view code]

Furthermore: A PS3YES flash update and PS3 Downgrade guide have been posted here and PS3Key flashes have been posted here.

PS3YES has stated, to quote:

"Our downgrade firmware is based on the PSGrade project, we will open the source soon.

Support for the following:

PS3YES AT90USB162 8mhz
PS3YES AT90USB162 16mhz
AT90USBKEY at90usb1287 8mhz
Teensy++ 1.0 at90usb646 16mhz
Teensy++ 2.0 at90usb1286 16mhz

Remember PS3YES were the first to release that PSN Hack that lasted a week on their Chinese forums!

Also sadly v3.55 is out so you can only use this great release to Downgrade v3.50 or LOWER firmwares!

NOTE: Importing the HEX to other devices using current payload converters will NOT work!"

graf_chokolo says: The key from KaKaRoTo for 0xAAAA dongle id is fine Just tested it by communicating directly with USB Dongle Authenticator from GameOS through DM VUART. Congratulations KaKaRoTo Good work!

PSGRADE Free PS3 Downgrade Hex Released - Master Key Found!

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#71 - atlask2 - December 8, 2010 // 12:04 am
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I can confirm that the ps3yes 8mhz hex works for at90usb162 , teensy 2.0 doesn't work, p3go too with all hex...

thanks PS3yes, Kakaroto, graph_chokoloko and all dev i forgive.

#70 - LioMajor - December 8, 2010 // 12:03 am
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evilsperm, i tested another stick > atmel at90usb1287 16mhz

It works with the release they made for teensy2++ (1286),
but not with your teensy2++. I also compiled with the last fork a real 1287 16mhz, but also not working.

I tried both usb's from my slim.

#69 - fldash - December 7, 2010 // 11:47 pm
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Yes, first post is always updated with compiles...

#68 - Figgzor - December 7, 2010 // 11:40 pm
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I hope this can lead to a permanent way to play 3.50 games, but this is definitely a step in the right direction.

#67 - losingmysenses - December 7, 2010 // 11:40 pm
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does anyone have a psgroove-rockbox ipod port or know when one will be available?

#66 - shikamaruxnara - December 7, 2010 // 11:39 pm
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Does this work on a jailbreak2 dongle ?

#65 - DeViL303 - December 7, 2010 // 11:37 pm
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I can confirm that the ps3yes 16mhz hex works for minimus V1! , nice one PS3yes!

#64 - LioMajor - December 7, 2010 // 11:35 pm
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evilsperm , i tested your git with: atmega16u4 8mhz, didnt work

#63 - replar - December 7, 2010 // 11:20 pm
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Here's the hex for Teensy 2 boards i just compilled. I tested it and it works.

#62 - longhornx - December 7, 2010 // 11:16 pm
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Quote Originally Posted by xScoper View Post
Any Ti 84 ports yet?

until now, nothing...