How do you update the firmware of the Panacast 50?

These were the steps I've found and it requires you being connected to the internet and having the latest version of Jabra Direct. I can't seem to find an alternative process like a manual update option without an app like other devices.

1. Power on and connect your device to your computer (This could be by connecting the USB cable, Jabra Bluetooth adapter, or Jabra DECT adapter).

2. In Jabra Direct, select your device.

If an update is available, this will be indicated by an Update now button.

3. Click the Update now button (or the Updates icon on the left menu) to open the Updates window.

4. Now click Update (Next to your listed device) to open the update dialog.

5. Choose your language from the drop-down menu then click Update

Never disconnect the device at any point during the update

6. Do not disconnect your device at any point during the update instructions to complete the update.

Important: The interface within the app may change or might be different. The official FAQ page also notes that "Images and text are for guidance purposes only. Actual images and text may vary depending on the device connected and updates to the software".