pour ceux que sa interesse g trouvé sa :
The Following is from Team Xecuter:
Here is a note from The Specialist over at xboxhacker.net - Well done from
Xecuter !
What is this?
It's a modified firmware of the Xbox 360 DVD-ROM drive.
As you (should) know, all Xbox 360 executables (XEX files) are signed by
Microsoft (with a private key only MS has). This means that if you try to change
anything to the XEX file, the signature will be wrong and the file will not
boot.
Now ... to protect from booting an exact 1:1 copy of a game from a DVD-+R,
microsoft gave each XEX file a 'mediaflag'. This mediaflag tells the Xbox 360
from which media (cd-r, dvd-r, dvd+r, dvd-rw, hdd, dvdxbox, dvdxbox360, ...).
Changing this mediaflag in XEX is not an option as it'll break the signature
(see above), so ... what's done in this firmware hack is 'break' the detection
of the disc.
(Pretty much) all the information you need is in these threads.
http://www.xboxhacker.net/forums/index.php?topic=455.0
http://www.xboxhacker.net/forums/index.php?topic=329.0
http://www.xboxhacker.net/forums/index.php?topic=359.0
http://www.xboxhacker.net/forums/index.php?topic=258.0
From what we can tell so far is that the game image will have to be patched
too - We can smell a new feature for Qwix 2 Wink
The scene can expect a hack for all drives very soon (It's currently only
Hitachi) - you can be assured that it will be released although I don't think
modchips will be any kind of business as its a pure piracy mod - no homebrew at
all.