Os pongo algo mas que he encontrado en un foro...
a ver si entre todo podemos hacer que funcione.
In theroy, PSGrade should work on any ps3 version, including 3.50 and 3.42.
I dont have a 3.50, so I need someone with 3.50 to test it for me.
So, if anyone has 3.50 and a teensy(sorry teensy only for now) board, post what teensy you have and I will give you the hex and instructions for testing.
Also, for some of you guys who did not read my whole discussion with graf_chokolo, here is what he said about the "borrowing":
"@zAxis
I dont’ know what they use. Maybe i’m wrong and you don’t need any stuff from SONY to initiate challenge/response protocol. I only know how to bring PS3 into product mode by using HV calls and how the protocol is implemented in Hypervisor."
and PSGrade initiates challenge/response with absolutely nothing from YON$, read the source code line by line.
and guys, please please please, don't tell me what graf_chokolo said or what is in his wiki, belive me I read them all, and if did not I would not have been able to make PSGrade.
and for everyone that is trying to help, THANKS, but if you have not tried geohot's expoilt then belive me there is nothing you can do, and thanks for trying. can any one get a hold of Hansi, he knows what he is doing but he is not responding.
on a side note, read euss and my post about psdowngrade:
PS3 Stinger: We got our own PS3 Downgrader - Dukio
it is very likly that psjailbreak team got psdowngrade from graf_chokolo notes.