If you are upgrading directly from Version 1 to Version 2.1 and later, be sure to download and run the new Climb! Logbook Updater. The Climb! Logbook Updater will quickly and simply update your V1 logbooks for use with V2.1 and later. The updater will also carry over any V1 airports database changes you've entered. If you are upgrading from Version 2.0, no data updates are necessary.