there is another workaround to make the upgrade to 1.10, posted by thorstenmustermann in the old forum. Here is the link and the original text. Hope it is ok to post it here.
Link to the old forum:
I found another (easy) solution:
Windows users: Please download the legacy UC version 2.0.2 from the PreSonus download page again - uninstall the current UC version 2.1 from your computer - install again the legacy UC version 2.0.2 and copy the UC file "windowsmidi.dll" from C:\Program Files\PreSonus\Universal Control\Plugins to a place your choice on your computer (probably on desktop) - uninstall the legacy UC version 2.0.2 again and install the current UC version 2.1 on your computer (probably you have to restart your computer) - override then the original "windowsmidi.dll" file in C:\Program Files\PreSonus\Universal Control\Plugins with the older "windowsmidi.dll" file from UC version 2.0.2 saved before on desktop - connect your Faderport 8 with your computer - start UC version 2.1 and start the firmware update to version 1.10 - DONE!
So in this case I'm thinking the "windowsmidi.dll" file from UC version 2.1 is still corrupt. Please dear PreSonus team correct this immediately. Thank you very much.