RME has published new Flash Update Tools and new drivers for download:

• Flash Update Tool for Fireface UFX. Update to firmware revision 340. At this time updating the UFX is done via USB only. Please install the USB driver, then use the USB flash update which updates the FireWire firmware as well.
• Windows Flash Update Tool for Fireface UFX, UC, Babyface. Update to firmware revision UFX: 351/144/340, UC: 115, Babyface: 184.
• Mac OS X Intel Flash Update Tool for Fireface UFX, Fireface UC, Babyface. Update to version UFX: 351/144/340, UC: 115, Babyface: 184.

Download from RME's website