I could probably do some testing of the dos build if you still need someone to.
Currently I just have freedos setup to run aflash.exe on a board that
doesn't work with flashrom, but I can run it on other boards. Mainly
just the sis630 board (parallel flash) I've got that uses the same
flash chip and is supported and socketed, but I can try reading on
other boards for testing LPC or FWH as well, but I don't have any
socketed to make it easy to just test writes on a spare flash chip
(have several off of failed boards). I don't feel like messing around
with any of my spi flash boards, so at best I could try reading if you
think it's safe.
Cross-compiling it seems kind of annoying, but not overly complicated.
I'd be builidng with a debian stretch i686.
Just send me a response with what you'd like me to test if you still
need it tested.