SunFire V490 won't boot Solaris 9 (9/05)

I have a brand new V490 with two dual core <a href="mailto:CPUs&#64;1500MHz." target="_blank">CPUs@1500MHz.</a> The preinstalled Solaris 10 works fine. But when i try to boot Solaris 9 (either CDROM or net), i get the following error:

krtld: load_exec: fail to expand cpu/$CPU

krtld: error during initial load/link phase

panic - boot: exitto64 returned from client program

Program terminated

I already updated OBP:

{2} ok .version

Release 4.18.8 created 2006/01/19 11:19

OBP 4.18.8 2006/01/19 11:19

POST 4.18.8 2006/01/19 11:30

OBDIAG 4.18.8 2006/01/19 11:27

but to no avail. Anyone who can help?

Ciao,

Arty

PS: call to Sun is also open, but they failed to call me back yet.

[793 byte] By [bdraschk] at [2007-11-25 22:50:23]