Updating esxi
Error Missing VIBs
When trying to update from 6.0.0 to 6.7.0 I had two hosts that would not upgrade. They would also fail to patch as well. Following these instrauctions[1][2] I was able to get the upgrade to run. But first I had to obtain the profile name. I am sure this is stored in the XML file in the zip file, but I was able to pull it from the update manager in vcenter.
esxcli software profile update -p ESXi-6.7.0-20191204001-standard -d /vmfs/volumes/3263a783-96e197a0/ESXi670-201912001.zip
When using the Dell customized image I ran into a bunch of errors that vcenter was unable to overcome. The following is what I used, but I ended up reverting back to the image above.
esxcli software profile update -p DellEMC-ESXi-6.7U3-14320388-A02 -d /vmfs/volumes/3263a783-96e197a0/VMware-VMvisor-Installer-6.7.0.update03-14320388.x86_64-DellEMC_Customized-A02.zip