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.