.7z is the compression format used for the distribution file. Update Context:

: Nightly builds may not include all map definitions (zmp). Download the combined map set and place it in the Sasgis.org 3. Updating an Existing Installation To update your current version to without losing your data: : It is recommended to backup your (waypoints) and SASPlanet.ini (settings) before proceeding.

Avoid third-party download sites. Official sources:

: Can export map data into formats compatible with iPhone maps, OziExplorer, and other GIS platforms.