What's New in OEMV FW 3.901 (January 31, 2012)
 Fix an NMEA log-related issue with version 3.900 running on tilt-enabled Smart-Ag receivers
 Improvements for long-baseline RTK performance

http://www.novatel.com/assets/Documents/Downloads/updt3901.zip

http://www.novatel.com/assets/Documents/Downloads/oem3901.zip