Getting 6.1 Sparc64 onto a Netra X1

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I have a Netra X1 that I'd like to use with FreeBSD. After hunting 
around, I found the following brief howto:

http://freebsd.mu/2005/10/19/freebsd-for-sparc64-sun-netra-x1.html

Unfortunately, this doesn't work! This is what I get:

Sun Netra X1 (UltraSPARC-IIe 400MHz), No Keyboard
OpenBoot 4.0, 128 MB memory installed, Serial #50990484.
Ethernet address 0:3:ba:a:d:94, Host ID: 830a0d94.


Environment monitoring: disabled
Executing last command: boot cdrom
Boot device: /pci at 1f,0/ide at d/cdrom at 2,0:f  File and args:
Evaluating: boot cdrom

Can't open boot device

Boot device: disk  File and args:
Loading ufs-file-system package 1.4 04 Aug 1995 13:02:54.


I have tried re-burning the CD and different CD Drives. Not sure what 
else I can do.

Anyone have an idea?