You can download the latest versions of GEODAS Software from the GEODAS Software page at: www.ngdc.noaa.gov/mgg/gdas/gx_announce.Html
Or directly from our ftp site: ftp.ngdc.noaa.gov
To get to the GEODAS software change directory to: /MGG/geodas/software
Check the README file to see if there is a newer version of the software up.
Or contact me directly:
Dan Metzger