HOW TO: Upgrade VMware vSphere Hypervisor ESXi 8.0U3 to ESXi 8.0U3b using an ISO
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Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
EE Fellow, MVE, Expert of the Year 2021,2017-11, Scribe 2016-2012, Author of the Year 2018-6,2013-2012 VMware vExpert Pro, vExpert 2025-2011
This video will show you how to update ESXi 8.0.3 to ESXi 8.0.3b using an ISO image connected to your server to get your system up to the latest release. In this tutorial, the version of ESXi 8.0. installed is ESXi 8.0.3, but this article can be followed to upgrade any version of ESXi 8.0. If your ESXi host has access to the internet, there is a quicker method shown in this video - HOW TO: Upgrade a VMware vSphere Hypervisor ESXi 8.0U3 to ESXi 8.0U3b direct from internet - VMware using the "dirty method"
VMware has removed many older legacy processors (CPUs) from ESXi 8.0, and also storage and network controllers. Please check the VMware Hardware Compatibility Lists (HCL) here.
It is not recommended to install ESXi 8.0 on USB or SD cards because of higher write I/O, and the SD cards are currently suffering because they are not higher endurance. Problems have been found in the wild.
VMware has removed many older legacy processors (CPUs) from ESXi 8.0, and also storage and network controllers. Please check the VMware Hardware Compatibility Lists (HCL) here.
It is not recommended to install ESXi 8.0 on USB or SD cards because of higher write I/O, and the SD cards are currently suffering because they are not higher endurance. Problems have been found in the wild.
Video Steps
1. Download ESXi 8.0U3b ISO image (Includes VMware Tools) from VMware.
Download ESXi 8.0 from VMware. Pay close attention if you require a Custom Image or OEM version for your vendor server.2. Mount the ISO in the Host ESXi 8.0.3 server.
Insert the ISO in the server.3. Power ON or REBOOT the Server.
Power on the server, not forgetting to select the CDROM BOOT source.4. At the Welcome to the VMware ESXi 8.0 Installation
Select Install and follow the prompts.5. Select Upgrade
Ensure that UPGRADE is selected.6. Reboot the server.
At the end of the installation select reboot, to reboot the server7. Check the server has been updated.
Check the server has been updated at the console, login to the Host Client, and check the build version.
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