This link worked for me just now: Knowledge Base Articles
If that isn't working for you, the short version is that you should shut down spectrum completely, including processd, sradmin, notifier, any integrations, etc. Copy $SPECROOT using something that will preserve file permissions and ownership (eg, cp -p on a Linux host). On Solaris or Linux, you'll also need to backup Spectrum contents that were installed in /opt, /sw, and /etc.