I was able to install the update but it does not work with 2.5.6 with our configuration. I uninstalled the upgrade and re-installed 1.0.3.1 which works fine. Not sure what the issue is with 1.1.0 but it stops recognizing devices. It has a funky additional extension it tries loading which results in an error during the new install (I've tried it both ways) manual install still gets the error, although the database is recognized in mobile joomla (at least it shows up in the information). I would stick with 1.0.3.1