my question is this..
why are you using a 3.1 ROM image in the first place?
if you dont own the original ROM, you cant legaly use 3.1!
my suggestion is this: use 3.0 until you can afford 3.1 ROMs, then use 3.5/3.9
DONT pirate AmigaOS!!!!!!
you certainly wont be helping the amiga community, if you have any interest in doing that