LF Audio | Help Center

Firmware Updates

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Overview

WVC units support over-the-air (OTA) firmware updates for both the base station and the wireless knob via the LF Audio AuralSync app. Updates deliver new features, signal analysis improvements, and bug fixes. Both Wi-Fi and Bluetooth update paths are supported.

Checking for Updates

  1. Open the LF Audio AuralSync app and connect to your unit.
  2. Tap on the device tile to open its detail view.
  3. If an update is available, an orange notification banner will appear at the top of the screen showing the current and new firmware versions, along with release notes. You can also verify your current firmware version at any time:
  • On the knob: Hold the top button > Knob Info
  • In the app: Open the device > firmware version is listed in the device info section

Setting Up Wi-Fi (Required for OTA Updates)

Wi-Fi credentials must be entered in the app before performing OTA updates. You only need to do this once per unit.

  1. In the AuralSync app, open your device settings.
  2. Enter your Wi-Fi SSID and password in the Wi-Fi fields.
  3. Tap Save / Confirm.

    The unit connects to 2.4 GHz Wi-Fi only. If you do not have a 2.4 GHz network nearby, you can temporarily enable a Wi-Fi hotspot on your phone and use those credentials.

Updating the Base Station

  1. In the AuralSync app, tap the firmware update notification on your device.
  2. Select Install via Wi-Fi.
  3. The unit will connect to your Wi-Fi network and begin downloading the update.
  4. A progress indicator and ETA timer are shown both in the app and on the unit's display.
  5. Once complete, the unit automatically restarts. No manual action is required.
  6. After restart, re-open the device in the app to confirm the new firmware version.
    Note

    When you start an update, the base station downloads the firmware over WiFi, then installs each CPU in sequence: the daughtercard first (PRO-6 only), then the Bluetooth secondary, and finally the main controller. The unit reboots once at the end with all CPUs on the new firmware.

Note (firmware 4.0.0): Starting an update from the WVC PRO-6 touchscreen now asks for confirmation before the update begins, so a stray touch cannot start an update by accident.

Force Update (Recovering an Interrupted Update)

Firmware 4.0.0 adds a Force Update option. A normal update check only offers firmware that is newer than what the unit is running. Force Update re-checks for updates and can re-install the current version, which is useful if a previous update was interrupted (for example, by a power loss or a dropped connection) and the unit needs a clean re-flash to recover.

Use Force Update only when a normal update did not complete and you need to repair the installation. For routine updates, use the standard update flow above.

Tip

If a unit is behaving unexpectedly after a failed update, a Force Update re-installs the same firmware cleanly without waiting for a newer release.

More Reliable Updates (Firmware 4.0.0)

Firmware 4.0.0 makes updates more robust on marginal connections. If a firmware transfer to a connected component does not go through, the unit now automatically retries that transfer in a slower, more robust mode, so updates succeed even when the connection is less than ideal.

Two-Stage Updates (Partition Migration)

Starting with firmware 3.11.0, the WVC base station migrates its internal storage layout to support larger future updates. The first time you install 3.11.0, the unit will reboot automatically partway through to apply the layout change, then continue updating normally. Do not disconnect or power off during this process. The AuralSync app shows a banner if migration is in progress, pending, or blocked.

Updating the Wireless Knob

The knob receives its firmware update through the base station's WiFi connection:

  1. In the AuralSync app, tap the knob firmware update notification.
  2. The base station shares its WiFi credentials with the knob wirelessly.
  3. The knob connects to WiFi and downloads the update directly.
  4. Progress is shown on the knob display.
  5. Once complete, the knob restarts automatically.
Note

The knob must be connected to a base station with valid WiFi credentials to receive updates. If you have an RTC, it can also update independently using saved WiFi networks.

Improved reliability (firmware 3.11.0+): Recent knob firmware downloads updates over an encrypted connection. This resolves rare update failures on captive-portal hotel/airport networks and on internet providers that rewrote plain web traffic. If you previously saw a knob update fail to start or stall during download on a particular network, updating to the latest firmware resolves it.