Whistle updates its device firmware automatically when connected to the Internet, and the App Store can notify you when a Whistle app update is available. If at any time you need to find your device's serial number or firmware version, you can easily do so.

1. In the Whistle app, tap the Settings icon.

2. On the Settings screen, tap Device Details.

 

3. The serial number and firmware version appear on the Device Details screen.

 

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