Wont Boot

[wizzer]

I read the sticky ... But ??

I have some Apple x v3 chips I’m trying to install in an X-box dated July 12th 2003 ( US Version )

All I’m getting is the Xbox tries to boot 3 times and then flashes red & green..

I verified all connections, tried 3 different chips, all with the same result..

Without the D0 connection, the Xbox boots just fine.

Should I be trying a different revision chip ??

Any idea`s ??