The WTH (Wireless Temperature Hub) can update its firmware over the air. Updates are downloaded over a WiFi network from LF Audio's update server and installed automatically, so you can keep the hub current without cables or tools.
How Updates Work
Firmware updates are managed through the LF Audio AuralSync app, and delivered over WiFi:
- You provide a WiFi network (name and password) to the hub through the app
- You start the update from the app
- The hub connects to that WiFi network and asks LF Audio's update server whether a newer firmware version is available for it
- If a newer version is published, the hub downloads it, verifies it, installs it, and restarts on the new firmware
- If the hub is already current, it reports that no new update was found and continues running as normal
What You'll Need
- The hub paired with the LF Audio AuralSync app over Bluetooth (see First Boot and Pairing)
- A 2.4 GHz WiFi network with working internet access
- The hub powered throughout the update
The hub connects to 2.4 GHz WiFi only. 5 GHz networks are not used. Most routers broadcast both bands under the same network name; if the hub cannot connect, confirm that 2.4 GHz is enabled on your router. If only 5 GHz is available, a 2.4 GHz hotspot from your phone works for the update.
Running an Update
- Open the LF Audio AuralSync app and connect to the hub
- Enter the WiFi network name and password you want the hub to use for the download
- Start the firmware update from the app
- The hub switches into update mode and works through the steps on its own
What to Expect During an Update
While the update runs, the hub works through these stages:
| Stage | What's Happening |
|---|---|
| Searching for WiFi | The hub is looking for the network you provided |
| Connecting | The hub is joining the WiFi network |
| Checking for updates | The hub is asking the update server which version applies to it |
| Downloading | A newer firmware version is being downloaded, shown as a percentage |
| Restarting | The download is complete and verified; the hub restarts on the new firmware |
If no newer version is published, the hub reports that no new update was found and returns to normal monitoring.
Do not remove power from the hub during an update. Wait for it to finish and restart on its own. An interrupted download does not damage the firmware already installed, because the new firmware is verified before it is applied, but letting the process complete is always best.
If an Update Doesn't Complete
A failed or cancelled update leaves the firmware already on the hub untouched, so you can safely retry. Common causes and fixes:
| Symptom | What to Check |
|---|---|
| The hub cannot find the WiFi network | Confirm the network is a 2.4 GHz network in range, and that the name and password entered in the app are correct |
| The hub connects but cannot reach the update server | Make sure the network has working internet access and is not a guest or captive-portal network that needs a browser login. Try a different network. |
| The update stops partway | Retry with a stronger WiFi signal. Keep the hub close to the router or hotspot during the update. |
| The update server reports it is busy | Wait a few minutes, then start the update again |
After a failed attempt, the hub restarts so you can try again from the app.
Checking Your Version and Changelogs
The LF Audio AuralSync app shows the hub's current firmware version and the changelog for each release, so you can see what is new before and after updating. Published firmware versions across LF Audio products are also listed on the firmware updates page.
Getting Help
If updates repeatedly fail after confirming your WiFi is on 2.4 GHz and has internet access, contact LF Audio support by email with your hub's current firmware version. See Troubleshooting.