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Bootloader Errors and USB Connection Problems

Resolving bootloader errors and USB connection problems during firmware updates

Problem description

This article explains how to fix Divesoft Liberty bootloader errors and Divesoft Center recognition failures that occur during or after a firmware update.

Possible causes:

  • Interrupted firmware update.
  • Outdated or corrupted USB drivers.
  • macOS or Windows compatibility issues with Divesoft Center.
  • Faulty USB dongle or cable.

Step-by-step troubleshooting:

  1. Restart the Divesoft Liberty head and reconnect via USB.
    1. Remove both battery jumpers and disconnect the USB cable.
    2. Connect the USB adapter to the handset connector first, then attach the whole assembly to the head.
    3. Insert the battery jumper on the same side as the USB connector, then insert the other jumper.
  2. Try a different USB cable and port. Avoid USB hubs where possible.
  3. Reinstall Divesoft Center.
  4. Attempt the update on a different computer (Windows is preferred if the update fails on a Mac).
  5. If USB updates continue to fail, retry the firmware update via Bluetooth as an alternative.

When to contact service

If the device remains unrecognized or stuck in bootloader mode (the HUD displays a constant purple light), contact your Divesoft instructor or the nearest Divesoft Liberty service point.