Sometimes something similar happens to me, too, while downloading a file with Voyager. Sometimes it saves a file which at first glance seems the correct one (same name, same size), but instead it contains what seems to be a rom dump of my Blizzard 1230. If someone is interested I've saved one of these files. Inside it contains the string "BLIZZARDRAM RAM AUTOCONFIG", but nothing more. Really a weird thing
Varthall
