The app has been replaced by Garmin's BaseCamp, which, apparently, lacks a bunch of features that were available in the former, such as connecting to a GPS device via serial connection and all the waypoints and tracks are included in a single database, as opposed to being saved to separate files, as they were in Garmin MapSource. Newer Garmin devices won't function with Garmin MapSource, since it isn't supported anymore. One method speaks about installing other third-party utilities such as Garmin Training Center or BaseCamp, while other websites specifically guide you into installing this app without media. If you look around online, you can surely find a way to install Garmin MapSource without having a previous version already available on the target computer. It is worth mentioning that this application is actually an updater for the Garmin MapSource program, so you must have a previous version installed so that you can use this one effectively. Featuring a smooth and consistent trigger pull, safe tool-free disassembly and a. Garmin MapSource is a handy software solution that was developed in order to help Garmin devices owners view various map documents as well as various waypoints, routes or tracks and transfer them on their Garmin devices without significant efforts. Fixed some map display issues (22s & 71s labels instead of highway names).