If your device failed to update and can’t be updated with the Firmware Update Tool again, try the following:

1. Unplug the receivers and remove the Bluetooth connections of all your Logitech devices.
2. Open and run the Logitech Firmware Update Tool, keep your device turned on, and wait until the software recognizes your device. This may take up to 30 seconds.
3. If the device isn't detected after 30 seconds, wake up the device by pressing any key or restart the device.