PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> Connect-VIServer -server matx01vmvh01

Name                           Port  User
----                           ----  ----
matx01vmvh01                   443   root


PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> Get-VMHostFirmware -vmhost matx01vmvh01 -backupconfiguration -destinationpath C:\users\tingalls\Desktop

Host            Data
----            ----
matx01vmvh01    C:\users\tingalls\Desktop\configBundle-matx01vmvh01.tgz

PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> Set-VMHost -vmhost matx01vmvh01 -state 'Maintenance'
PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> set-vmhostfirmware -vmhost matx01vmvh01 -restore -sourcepath c:\users\tingalls\desktop\config-bundle-matx01vmvh01.tgz -hostuser root

C:\Program Files (x86)\VMware\VMware vSphere CLI\bin>vicfg-cfgbackup.pl --save --username root --server matx01vmvh01.nerdydrunk.net c:\Users\tingalls\Desktop\matx01vmvh01.bak
Enter username: root
Enter password:
Saving firmware configuration to c:\Users\tingalls\Desktop\matx01vmvh01.bak ...

# C:\Program Files\VMware\VMware vSphere CLI\bin>vicfg-cfgbackup.pl –save –server 10.2.5.80 backup.bak
# C:\Users\Username\AppData\Local\VirtualStore\Program Files\VMware\VMware vSphere CLI\bin\backup.bak

C:\Program Files\VMware\VMware vSphere CLI\bin>vicfg-cfgbackup.pl –load –server 10.2.0.200 backup.bak

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2042141

[root@matx01vmvh01:~] vim-cmd hostsvc/firmware/backup_config
[root@matx01vmvh01:~] find -name configBundle-matx01vmvh01.tgz
[root@matx01vmvh01:~] cp /vmfs/volumes/50cd9f85-90c255e8-a9cb-002590a14802/.locker/downloads/5231dff8-fd33-089e-d061-f4e3be007b05/configBundle-matx01vmvh01.tgz /vmfs/volumes/DS-VH01LOCL-VDPA/ISOs/
[root@matx01vmvh01:~] ls /vmfs/volumes/DS-VH01LOCL-VDPA/ISOs/

[root@matx01vmvh01:~] vim-cmd hostsvc/maintenance_mode_enter
[root@matx01vmvh01:~] cp /vmfs/volumes/DS-VH01LOCL-VDPA/ISOs/configBundle-matx01vmvh01.tgz /tmp/configBundle.tgz
[root@matx01vmvh01:~] vim-cmd hostsvc/firmware/restore_config /tmp/configBundle.tgz