Reverse engineer fixture library

I've gone through the forum and have discovered that there's an HTML listing of all the instruments that comes with a fixture library update.  So, being a newbie with a new Ion xe console, where could I find a fixture update with the HTML file??  And does that HTML file give me the capability to dig through it and look for an instrument with a particular set channel/command pairs?  We've got some low end disco type stuff hanging around that is completely unlabeled and I don't want to submit fixture updates for them if they're already out there. 

Related