Hmm... I am flabbergasted. If you treat Kickstart as the same thing as OS 3.0 & OS 3.1, then what option should you choose having ROM 3.1 and running OS 3.9 on it?
Well, AFAIK ROM 3.1 is patched during boot and it's seen by the system as Kickstart 3.9.
Varthall
