If you have the "Firmware Available" notification enabled, Flair will send a notification if a firmware update is available for a Puck.
Firmware updates are downloaded over WiFi. Gateway Pucks will automatically download their firmware updates.
Sensor Puck will temporarily connect to WiFi to download their firmware update and require your approval prior to downloading.
If a Sensor Puck is unable to maintain a good WiFi connection during download, the batteries may run out because WiFi requires a lot of power. Try moving the Sensor Puck closer to the router.
See also Notifications.