Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -Confirm:$False  

$creds = Get-Credential -Message "Enter credentials for Lockdown Exception User"  
$vmhosts = @()
101..109 | foreach { $vmhosts += "namehost" + $_.ToString("000") + ".vmware.com" }  

foreach ($vmhost in $vmhosts){      
connect-viserver $vmhost -Credential $creds    
Set-vmhost -State Maintenance    
Set-VMHostFirmware -VMhost $vmhost -ResetToDefaults    
disconnect-viserver * -Confirm:$False  
}