– Connect to your ESXi with vSphere client and if necessary, enable SSH by going to configuration > security profile > properties > ssh and start the SSH service.
Step 1: Connect via putty, enter your root login and password and enter this single line (actually two:
This one to enable the https client on the firewall first:
esxcli network firewall ruleset set -e true -r httpsClient
And then this one (which will need some time to download the bits from VMware Online depot):
esxcli software profile update -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-6.0.0-20150404001-standard