If you still need to customize the ESXi Image Profile before installation, you will still need to use something like Image Builder and then upload that to your online depot.
I've added some important details, as also seen in the video below.
Update the Dell Poweredge BIOS and firmware on ESX/ESXi ESXi does not have the required software libraries installed to perform the updates inside the OS.
Updating Power Edge Server BIOS and related hardware firmware via ESXi is not possible.
For my Super Server Workstation, I didn't have to worry about VIBs: the stock drivers built into 6.0 are all I need to succeed.
Even if I do need AHCI or NVMe VIBs in the future, I can just re-add such VIBs after similar future upgrades, or even inject them into a custom ISO.
that Web UI you get when you access your VCSA via port 5480. Good news, just hours ago, You Tuber Aqxea was apparently watching my How to update your VMware server to ESXi 6.0 Update 1b the easy way video, and kindly dropped just the right comment. Just as I was finally getting a moment to sit down and apply the upgrade tonight.