Upgrade ESXi 4.0 to ESXi 4.1

1. You need CLI – Download Here

For or Linux and install on your .

2. Download the Upgrade Package for 4.0 to 4.1

3. Power off your VM’s and put the host into maintenance mode

4. From the vSphere CLI prompt

vihostupdate.pl –server hostname or IP -i –b d:\downloads\upgrade-from-4.0-to-4.1.0-0.0.260247-release.zip -B 410-GA

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