I might have what you’re looking for, beware though, no guarantee it won’t break something, but that’s what I could find for you.
BIOS
No clue about what the GPU/USB version mean.
BIOS.zip (94.0 MB)
BMC
Sometimes on their FTP some files are in a subfolder called “Special”, no clue why though.
There is a more recent BMC version technically, but given it has a service provider’s name in it… nah, aint gonna touch that.
yeah I won’t comment on the seriousness of some things I came across there.
exactly why I was interested in the AsrockRack PAUL. To run an off the shelf consumer board. Also the perk of paying for IPMI once, instead of each board upgrade/swap.