Steve,
I needed the old firmware for a new 12-22 receiver the other day, I found it at www.weatronic-usa.com, seems like it's the old versions only there, there is a version from 05/2009 of the Giga software also, maybe that can be used: http://www.weatronic-usa.com/index.p...d=16&Itemid=31

PS: you have to create a login on the site to get access to the files