Esxi6.5 upgrade 6.5u1

1.shutdown or pause VMs

2.VM host -> Actions -> enter maintenance mode

3.VM host -> Actions -> Services -> Enable Secure Shell(SSH)

4. ssh login to host

5.command line

#開啟防火牆httpclient設定
>esxcli network firewall ruleset set -e true -r httpClient

#下載並更新6.5u1
>esxcli software profile update -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-6.5.0-20170702001-standard

#關閉防火牆httpclient設定
>esxcli network firewall ruleset set -e false -r httpClient

#如果更新成功，重新開機
>reboot

6.VM host -> Actions -> Exit maintenance mode

7.check SYSTEM version and VMs