BBSAK v1.9.11 Check out the latest version of BlackBerry Swiss Army Knife! This app does everything from backup 3rd party applications to load Operating Systems. Story Behind BBSAK BBSAK was built as a JL Cmdr replacement tool with a more friendly GUI, developed by two hobbyist developers. It has grown to what it is today, a windows application with many funtions for modifiying BlackBerries. It uses Javaloader to do its magic. We hope that you all will find it as useful as I do. Please if you post on other sites use the link provided here, so we can keep count of downloads. Backup 3rd Party Applications! Install Older OSs W/O Uninstalling! Install & Remove COD Files. Make & Install JAD Files.