Geoid 2012 A for GNSS Solutions, Ashtech GEOIDS Program and MobileMapper Field

I did not see much chance of Spectra Precision / Ashtech releasing the GEOID12A model as a self installer so here is my implementation:

http://www.ashgps.com/ms/G2012A/Install_GEOID12A_RevC.exe

This is a digitally signed, self installing tool that should figure out where the correct place to put GEOIDS is and stick G12A there.