If you click the Upgrade button, it will update your IBX to the latest version (i.e. 11.0.6001.8015). Without having any IBX, you can get licences and play a DRM protected files, but you can't use FairUse4WM or freeme2.

drmdbg 2009/03/03 works fine with IBX 11.0.6001.8015, but freeme2 and drm2wmv produce unplayable files.