V8i ver6 on Autocad 2015/16

Is there anyway to access a software update for ProSteel V8i version 6 for use on autocad 2015 and 2016?  I updated my autocad software but now my Prosteel is not working and when I reinstall prosteel 081111145  is asking for Autocad 2010-2013 to run the  installer.
Thoughts?