Software upgrade for ColourSource Lamps is where?

This may be the wrong forum (console vs. LED lamps), but I didn't see where else to go.

 

I'm looking to upgrade the software on the ColorSource LED S4s in my rig.  I've found the documentation for version 1.5, but I can't find the actual software.  It doesn't appear under the Software tab at the bottom of the page.

 

please direct me to the correct location.

 

Thanks.  Andrew

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