In this article I will show how to upgrade VMware ESXi version using offline-Bundle.

• Download the VMware Esxi Offline Bundle
• Upload the Offline-Bundle to ESXi datastore
• Place the ESXi host in Maintenance mode
• SSH to ESXi Host using putty
• Run the upgrade command , replace the DATASTORE-UUID with the UUID of your datastore where you have uploaded the Offline Bundle

esxcli software vib update -d /vmfs/volumes/<DATASTORE-UUID>/update-from-esxi6.5-xxx.zip

• once done, reboot the host using below command
• Reboot
• Exit maintenance mode

Upgrade Compatibility Checks

https://www.vmware.com/resources/compatibility/sim/interop_matrix.php#upgrade&solution=1

VMware Hardware Compatibility List

https://www.vmware.com/resources/compatibility/search.php