There is not much to find, but apparently, they do software updates over the "air": http://blogs.esa.int/rosetta/2014/03/28/software-upgrade-at-655-million-kilo

There is not much to find, but apparently, they do software updates over the "air": http://blogs.esa.int/rosetta/2014/03/28/software-upgrade-at-655-million-kilometres/ http://blogs.esa.int/rosetta/2014/03/28/software-upgrade-at-...