Till, let me help you a bit to finally engage latest USB_ModeSwitch and data package in
Fedora 21.
- Refer to proper usb_modeswitch-data version
https://bugzilla.redhat.com/show_bug.cgi?id=1169234
- Add missed REFERENCE file & refer to proper usb_modeswitch version
https://bugzilla.redhat.com/show_bug.cgi?id=1169235
poma