2old,
you are correct in what you say, the older CA Cam must have the 27C512 eprom physically removed and reprogrammed, Amon 2.1 or 2.2 would be OK. This will give you I/S/V on a nokia 9200,9500,dbox by installing DVB2000 as well. A recent topic explains this in a link.
ipres
It must be...