VBIOS update on H100 (Intel TDX + H100)

Why does an expired VBIOS lead to the “No device not found” error?
I’m trying to understand the connection between the BIOS and the “No device not found” error, Can anyone explain this for me? as well as the detailed reasons for this error occurring (there’s dmesg information available above). Is it possible that it’s not a VBIOS issue?
Besides reaching out to the supplier, how can we fix this problem by ourselves?
Thank you very much!