/Update-WIMBootEntry /Path: /DataSourceID: /ImageFile: Updates WIMBoot configuration entry, associated with the specified ...

/Update-WIMBootEntry /Path: /DataSourceID: 
  /ImageFile:

  Updates WIMBoot configuration entry, associated with the specified 
  data source ID, with the renamed or moved image file path.
  Use /Path to specify the disk volume of the WIMBoot configuration. 
  Use /DataSourceID to specify the data source ID as displayed by 
  Get-WIMBootEntry. 

    Example: 
      DISM.exe /Update-WIMBootEntry /Path:C:\ /DataSourceID:0 
        /ImageFile:R:\Install.wim