You've got the 1.4 Boot ROMs with (I think) Release 2.01 in software. You need a newer Super Kickstart disk and the 2.04 installation disks.
But waiting for the 3.1 ROMs is probably the easiest solution. You'll need the 3.1 disks to go with them as well.
The pre-2.04 software is pretty uncommon, so if you've got original disks they're probably worth backing up for historical purposes.
