If you are running the driver on the Metadirectory server, the driver shim files are updated when you update the server unless they were not selected during a custom installation. If you are running the driver on another server, the driver shim files are updated when you update the Remote Loader on the server.
The 4.0 version of the driver shim supports drivers created by using any 3.x version of the driver configuration file. You can continue to use these driver configurations until you want to upgrade them.
The following sections provide information to help you upgrade an existing driver to version 4.0: