I’d contact iXsystems directly. It’s likely the best computer-related tech support I have ever experienced. Let iXsystems help you!
Neither Asrock Rack nor SuperMicro typically post BIOS’ out in the open. However, I have found Supermicro to be generally responsive. End user support directly by AsRock Rack has been described here as pretty uneven - some folk got help with the AVR54 C2xxx Intel CPU bug for example, many did not.
That’s why buying the Mini was so great for me - when the bug struck my board, iXsystems went to the mat for me and three motherboards later, I finally had a correct revision that I could have confidence in. iXsystems has a lot more pull with Asrock Rack than most, if not all, of us do.
When I searched the topic it came back that the BIOs update would solve the problem. I did disable CPU C-States Support, which now the error has stopped showing, but I feel like all this did was allow me to ignore it.
Thanks for posting this. I have a TRUENAS-MINI-3.0-XL+ from a 2021. At one point I had opened a case with IXSystems asking for the exact motherboard the system used as I wanted to look at the NIC chipset to see if it could support 2.5/5 along with the 10G-BaseT. After much back and forth they refused to give me the exact board model. Needless to say it was quite frustrating. From your post here you seem to have identified a specify boards to specific systems. Can you let me know which models these go to, if you know?
There is a PHY chip on the board, a X557-AT2 Base-T, so specs say 100MB/1G/10G only. The block diagram looks like they are using the AST2400 for the IPMI.
So was successful in upgrading both the BMC and the BIOS on the system. One word of warning - in doing so it wiped the information that iXsystems baked into the board that IDs it and its serial number. So for example in the default screen of the GUI it no longer reports what it is correctly and the serial number. I have downloaded the Supermicro IPMICFG tool which says it allows you to rewrite these items and the command looks like it works, but there is something I am missing. In the IPMI console the FRU is correct now but the Hardware information item is not.