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Bootloader Errors and USB Connection Problems

Resolving bootloader errors and USB connection problems during firmware updates

Problem description:
Users may encounter bootloader errors during firmware updates, or find that DivesoftCenter does not recognize Liberty units after failed updates.

Possible causes:

  • Interrupted firmware update.
  • Outdated or corrupted USB drivers.
  • Mac/PC compatibility issues with Divesoft Center.
  • Faulty USB dongle or cable.

Step-by-step troubleshooting:

  • Restart the Liberty head and reconnect via USB.
    • Remove both battery jumpers, disconnect the USB cable.
    • Assemble first the USB adapter and the handset connector, connect whole assembly to the head.
    • Insert battery jumper at the same side of the USB connector, then the other jumper.
  • Try a different USB cable and port. Avoid hubs where possible.
  • Reinstall DivesoftCenter.
  • Attempt the update on a different computer (Windows preferred if Mac fails).
  • If possible, retry firmware update via Bluetooth as an alternative.

When to contact service: If the device remains unrecognized or stuck in bootloader (HUD constantly indicating purple), contact your instructor or a closest Liberty service point.