Service Bulletin

  1. SonoAlti 3V Service Bulletin Update Improves Sound Quality

    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.

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