How to Update from ESXi 4.1 to ESXi 4.1 Update 1 without VMware Update Manager

Updated on March 18, 2019
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VMware ESXi 4.1

I will show you the exact steps which are necessary to be able to update ESXi 4.1 to ESXi 4.1 update 1 with using utility inVMware vCLI.
You need the upgrade file and VMware vCLI.

Steps to Update from ESXi 4.1 to ESXi 4.1 Update 1:

1- First of all you need to download the update package for ESXi 4.1. Go to this adress and download the zip file from VMware Official Website (206 Mb).

2- Download VMware vCLI here from VMware and install it on your Windows box.

3- Copy the downloaded ZIP package to the bin directory of WMware vCli.

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4- Open the vCLI command prompt and CD to the c:Program FilesVMwareVMware vSphere CLIbin directory.

5- Make sure Windows host is communicating to VMware ESXi Server ( just do a network ping).

6- Connect to ESXi host via vSphere Client and Shutdown all virtual machines running on ESXi host and then put server into the Maintenance Mode.

How to Update from ESXi 4.1 to ESXi 4.1 Update 1

5- Enter perl ” -server -i -b

Do not copy paste above command prompt, instead write it manually ( otherwise you may get an error message saying ” error connecting to server at ‘https localhost sdk webservice’ perhaps host is not a vCenter or ESX server ” ). This is typical perl behaviour 🙂

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6- Reboot ESXi host.

7- Now, connect the ESXi host through VMware vSphere client utility. It may request to update the vSphere client to 4.1 update 1.

How to Update from ESXi 4.1 to ESXi 4.1 Update 1