Well, this future upgrade had me going through my archived stuff regarding the Supermicro X9SCM-F mainboard, since the OPNSense firewall uses one. I should turn off the IPMI/BMC on that, since I have not used it in over five years... It's not even hooked up, either. It merely adds ~2 minutes of boot time to the entire process...

Anyway, found some missing BMC firmware and one newer BMC firmware on the Internet. I am also obtaining the rest of the driver CDs, since an earlier attempt was done when I didn't even have enough space in general.