The file is called VMware-ESXi-6.0.0-2494585- depot.zip, check the following:.Download the ESXi 6.0 Offline Bundle from VMware - here Here are the steps to upgrade your software:ġ. Additionally, all virtual machines must be powered off and the server should be in maintenance mode. It is important to ensure you have valid backups of your virtual machines before you make any changes to a Production VMware vSphere Hypervisor ESXi 5.1 Host server, which is hosting virtual machines. As many begin the process of upgrading their ESXi software to the latest version, there are a variety of steps to be aware of. In this tutorial article, I'll explain how to upgrade ESXi 5.1 to ESXi 6.0 in 5 easy steps.