Searching Sage-IV ROM 2.0/2.1 dump

Hi, I already asked this in thesimh mailinglist, without replies, so maybe this list is more appropriate to get a response. I am working on a SIMH emulator for the Sage&Stride 68k machines (Sage-II/IV). There is a lot of docs available at sageandstride.org, which is the base for the development. One thing I haven't found yet is a more recent boot ROM than the available 1.2 version; docs mention 2.0 and 2.1. These versions have, besides presumably a number of bug fixes, support for the winchester disk card. Does anyone have a rom dump (any format) of such a BIOS (16k)? I already tried to contact David Erhart, the owner of the above site, but twice didn't get any response. Thanks in advance Holger P.S. The code is not yet ready to release (still some bugs in the FDC part, some missing instructions, and the HDC support), but I'll report in the simh developers list when it is.