ESXi can be upgraded from the CLI. Unlike the interactive method, the CLI requires the use of an offline ZIP bundle.
Here is what you will need to perform an ESXi upgrade using the CLI:
- Ensure that the hardware is compatible with ESXi 6.7.
- Ensure that the version running is ESXi 6.0 U3 or later.
- Download the ESXi 6.7 OEM offline bundle's .zip file .
- SSH access to the ESXi host and the root password.