Hi.
The IPMI plugin is only used to display hardware information if you are using mona_1.44gg
.
To display if a BIOS update is available, we mainly fetch this endpoint: https://pictures.2cr.si/Images_site_web_Odoo/Pages_produit/VATES-BIOS_BMC_last-version.json
Does your host have access to this endpoint?
What is the ouput of xo-cli host.getBiosInfo id=<host-id>