This was covered multiple times in the thread, as well in the instructions. Since the Vampire is pre-built using 3.1, this is the only version he can accept.I have cloanto 3.x Rom for my amiga 600 can I upload this to use via my Vampire v2 or only v 3.1?
Since the kickstart is slightly modified to make it work, it is currently not possible to use any other KS ROM with the Vampire at the moment. Perhaps at some point in the future.