Bad magic number error

So we have a new to us v240 server with no OS installed. It has an outdated version of OB and ALOM so before we install the OS we want to update both. We have a DVD with the latest OB patch burned on it.

We do the boot cdrom [pathname] command but receive the Bad Magic Number Error. Does an OS need to be installed prior to updating OB and ALOM? I ask this first before we try other routes like formatting.

Thanks.

Is the DVD a bootable solaris media? Because you can't just boot from the patch...

Admin/mod may lock this thread now. We ended up just installing the operating system to make it easier.