KeepKey will periodically prompt you to update the device's firmware. Before you begin a firmware update, make sure you have access to your recovery sentence.
To launch KeepKey in firmware update mode, press and hold the device button while connecting your KeepKey.
KeepKey will then launch in firmware update mode.
Follow the on-screen instructions. Once the update has completed, disconnect and then reconnect your KeepKey as you normally would.
You can verify the firmware version by opening "Settings" in the KeepKey app. Here, you will find the version number in the bottom left corner.
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