I can not find any documentation for moving from ESXi 5.0 to ESXi 5.0 update 1. The documentation that came with update 1 seems to be the same 5.0 documentation that just mentions upgrade paths from 4.1 etc.
I am attempting to upgrade in the same manner that I upgraded from 4.1u1. First I updated vCenter to 5.0u1. Then I added an upgrade profile to update manager and imported the 5.0u1 iso. However when I try to remediate a host (currently running 5.0), I get this error message: "Upgrade is not supported for host [hostname]"
When I select the 5.0u1 Upgrade in Update Manager and click details next to one of my hosts I see the following message: "Host version 5.0.0 is not supported for this upgrade. Supported host versions are: 4.0 4.1 ."
So the question is: how do I get Update 1 installed on my 5.0 ESXi hosts?
It's not actually an upgrade.
What you're looking to do is apply the latest patch, which update manager should actually find dynamically if there's a "all VMware patches" baseline. You don't want to import the iso, this is for new installs.
Follow below KB article for upgrading ESXi 5.0 to ESXi 5.0.x