serial data line
in all ps3s, there is a serial data line on the console’s XDR chip used to initialize the ram‘s test pattern.
It has read/write mode and it’s freely accessable. 

the address is obtained from the xdr interface.
You can see it on service manual.

You can write a payload to memory and on a loaded game (or savegame data) it’ll run the payload and do… stuff.

ps: yes, all ps3s

discuss at will or shit on it, i don’t care…

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