This post may be pointless looking where the discussion went and how long it's been
The Milan provides a user application to configure and flash it's BIOS.
Without the unit booted in front of me, cannot explain verbatim the sequence.
Have no clue if this is something than can be done from the desktop of the Hades.
Maybe it's useful, maybe not.
Michael sold as extra the driver required for SCSI operation on the Milan.
This file, or at least the configuration for it's operation was performed using the flash tool.
Without going into whom killed whom, and what kind of axe was used, was never successful in getting the SCSI bus to work properly with any SCSI device.
Also note that with the SCSI driver (or configuration thereof) flashed in BIOS, the Milan exhibited many of the same issues discussed here. I too chased down cables, various SCSI cards and varying SCSI devices. Just when it would appear a configuration was successful, on the next sequential boot numerous errors were encountered. Note too that even without devices connected to the bus, the errors would still occur as long as the driver were installed.
The remedy was to not configure the SCSI driver in the BIOS (removing it by option).
It was then the machine booted and functioned reliably without error.
Never had issues with the IDE bus on the Milan. My point, or thought here is if the Hades can have the IDE and or SCSI drivers disabled in BIOS (not talking about HDD or such, that's well after the fact), and if those are the root of the problem, the Hades should boot to ROM (although a different type monitor may need be connected if a video driver is required for the graphics card). Usually with the Hades, Milan and clones, there was a basic VGA driver in BIOS to at least watch post messages. Also keep in mind while troubleshooting, problems with a faulty device driver configuration can corrupt data during start up, and well, that's a bad thing
If for some reason ROM data was changed (as it was for English options, and LP, don't recall if you had made changes), and cannot be re-flashed from desktop, then you are back to square one.
My 2 cents.