SonoAlti 3V

The popular speaking audible altimeter from Freefall Data Systems has an available update for improving the sound quality, volume and reliability of its built-in speaker. Reports of failing speakers was determined to be a firmware issue, which is resolved with a firmware and sound file update.

If you have a SonoAlti 3V unit with a firmware of 1.0 or 1.1, this firmware update is for you. To find out what firmware version you have, press the button adjacent to the speaker with a paper clip to hear the firmware number.