VMware: How To Rollback ESXi 4.1 to 4.0 Upgrade

Sometimes it is necessary to rollback an installation of VMware ESXi, reverting to a previous installation. Last weekend I did this for testing in my home lab. It’s pretty easy…

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^ My upgraded VMware ESXi 4.1.0 Build 260247 server

 

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^ Reboot the host and press SHIFT + H to revert the rollback. Message:

Current hypervisor will premanently be replaced with build: 4.0.0.-164009. Are you sure?

Press Y (or SHIFT + Y) to rollback the upgrade

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^ Oke.. 2 seconds later I received this message:

1 log messages, press ESX to view.

 

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^ Message:

Fallback hypervisor restored successfully

 

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^ The ESXi 4.1 host is downgraded to ESXi 4.0.0 and is back online again 🙂

 

Elapsed time: 10 minutes

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has 15+ years experience in IT, primary focus: virtualization and modern worksplace.

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8 thoughts on “VMware: How To Rollback ESXi 4.1 to 4.0 Upgrade

  1. can you give a similar solution to rollback to esxi 3.5. i was working on esxi 3.5 the installed esxi 4.1. i want to roll back to esxi 3.5. please anybody can help?

  2. can you give a similar solution to rollback to esxi 3.5. i was working on esxi 3.5 then installed esxi 4.1 (348481). i want to roll back to esxi 3.5. please anybody can help?

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