Download and install JDownloader , a Java-based download manager designed to handle container files.
If the file is actually a extension (or a zip containing one) used to download content via a container format ReviverSoft : Unlock DLC.zip
To make sure I'm giving you the right steps, could you let me know: Is it a or a .dlc file extension? Which game is this for? Download and install JDownloader , a Java-based download
Open the Unlock DLC.dlc file using JDownloader. Download and install JDownloader
Scenario 1: A Compressed Archive ( .zip containing game files)