Is it possible to use a CH341 serial to USB to write the BIN directly to the ROM ..?
If so that sounds like it's truly the easiest (provided the ROM will fit my pomona clip).
I've downloaded from Dell the H330 mini BIN that it says it's the updater for Red Hat Linux // H330 Mini.
Update Package for Red Hat Linux - SAS-RAID_Firmware_NYKX7_LN_25.5.9.0001_A15.BIN
...the one thing that gives me pause is that it's not an 8MB file, it's 6.9MB apparently...
If that BIN won't work, can I copy the BIN from another H330 mini's ROM to flash it via a Serial-to-USB device..?
For anyone who uses MacOS and wants to write ROMs w a CH341, just use
FlashROM [Installed w Homebrew]