Downgrade ESXi host from ESXi 5.5 to ESXi 5.1 Update 2

I successfully downgrade 5.5 to 5.1 in our LAB environment using vicfg-cfgbackup.pl with a small work-around. The key was to to change the first line in the Manifest.txt to show a 5.1 config. use VMware vSphere CLI on your workstation and execute “vicfg-cfgbackup.pl –server 10.167.5.4 -s \esxi.tar.gz” save the 5.5 config to a gzipped tar … Read more Downgrade ESXi host from ESXi 5.5 to ESXi 5.1 Update 2