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
/ PSGrade PS3 Hex Codes
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 PSGRADE AT90USB1287-8Mhz PSGRADE PS3YES PSGRADE PS3YES AT90USB162-8mhz PSGRADE PS3YES AT90USB162-16mhz
This is the last line from psgrade_ps3yes.hex
Of note, The master key has been stated to be:
04 4E 61 1B A6 A6 E3 9A 98 CF 35 81 2C 80 68 C7 FC 5F 7A E8
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!
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