XBOX
EVOLUTION
How does an xbox modchip work (newbie level)?
(v0.1)
How does an xbox modchip work (newbie level)? (v0.1)
Tutorial written by : T.B.
Lets start this with an unmodded xbox. It basically works
like this. It turns on, plays that little flubber animation,
displays the xbox logo, and then looks for a disc in the dvd
drive. If the disc meets certain criteria(digital signatures
and media flags mainly) it then executes default.xbe off of
the root of the disc. If there is no disc in the drive, the
xbox then boots xboxdash.xbe(the xbox dashboard) off of it's
hard drive.
This is all done by the xbox BIOS.
Some very crafty people managed to obtain this BIOS from
the xbox and modify it. The base thing they've done is to
remove the requirements for digitally signed software, and
also remove the requirements for special media flags for discs
put into the dvd drive. This new BIOS is then put onto a flash
rom of some sort and wired into the xbox. THe xbox powers
up and then executes this new bios instead. The new BIOS does
the exact same thing as the original, minus the checks for
digital signatures and media flags.
At this point, you can then run unmodded code. The first
thing you'll likely run is the Evolution-X dashboard. There
are many tutorials on how to set it up, install it on your
xbox, etc.
Tutorial written by : T.B.
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