vSphere 5.5 was released on the 22nd of September and I thought it would be a great time to test out the upgrade/update from the command line.
Connect to the Shell using your preferred Terminal tool (putty).
Before going a head with this I would check that the update has all the required VIB’s for your host. some may not included in the standard version.
It is also recommended that you disable any SAN connections \ Unplug ( Thanks Bhargav for mentioning this “http://www.bhargavs.com/“)
Firstly check what version of ESXI you are running by the following cmd:
~ # VMware -l
~ # esxcli network firewall ruleset set -e true -r httpClient
~ # esxcli software profile update -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-5.5.0-1331820-standard
~ # tail -f /var/log/esxupdate.log