Try contacting your vendor or download from the support site: www.service.sap.com
The problem is that you will need a support signon …
Here’s a sticky of the versions above 11.0
Business Objects versions
The later versions unpack to a local install version - I don’t think those earlier releases did that though but it’s worth a try digging through the temp files on your PROD installation.
Also dig around for any xi…pdf files - deployent & admin guides and readme files.
I’m trying to rack my brain as to the XI to XIr2 upgrade - not sure if it was an upgrade or new install but the process is always the same - as long as you have a backup of your CMS and FileStore you’re covered.
The only thing you would be missing out on is any customisation or tweaks post installation i.e. on the web / app server.
MikeD 
(BOB member since 2002-06-18)