After upgrading to WebSphere 8.5 I\'ve experienced some incompatibilites in my JSF application. It is possible that they were caused by uncanonical use of JSF components, bu
You could add your own myfaces implementation and load that one instead. Therefor you would have to change the classloader and set it to PARENT_LAST.
Older versions showed the installed JSF version during JSF initalization, however IBM probably has a customized JSF version anyways.