Your gateway needs to be connected to the internet to update the anchor firmware through the web application. For installations where this is not possible we can assist in updating your anchor firmware offline.
You can update the anchor firmware by going to the Devices → Anchors page in the web application (https://app.pozyx.io/devices/anchors) and clicking on the Update firmware button:
Next, select the desired firmware version, and press Start update:
The gateway will now push the new anchor firmware to all the connected anchors.