1. Open "System Preferences".
2. Open "Bluetooth".
3. Select a device that you wish to delete and press the "x" on the right. The selected device will be removed from the list.
4. Please refer to the articles below for details on how to reconnect the device.

Send code via Bluetooth® connection
Use test mode via Bluetooth® connection

If your Core does not appear on System Preferences as a device, or if the above process does not work, please update the KOOV app and the macOS to the latest version then go through the following process.

[Remove all Bluetooth devices from the list]

1. On the "Bluetooth" settings screen, tick the box next to "Show Bluetooth in menu bar".
2. Press [Shift] [Option] and click the Bluetooth icon on the menu bar at the same time.
3. Select "Debug" then "Remove all devices" on the menu.
   *You will need to reconnect your keyboard and/or mouse after this procedure.
4. Restart macOS then the KOOV app. In the coding screen, click "Send" or "Test mode" and check if your Core is being recognized as a Bluetooth device.
5. If your Core has been recognized as a Bluetooth device, there is no need to go through the following process.

[Reset the Bluetooth module]

1. On the "Bluetooth" settings screen, tick the box next to "Show Bluetooth in menu bar".
2. Press [Shift] [Option] and click the Bluetooth icon on the menu bar at the same time.
3. Select "Debug" then "Reset the Bluetooth module".
   *You will need to reconnect your keyboard and/or mouse after this procedure.
4. Restart macOS then the KOOV app. In the coding screen, click "Send" or "Test mode" and check if your Core is being recognized as a Bluetooth device.
5. If your Core has been recognized as a Bluetooth device, there is no need to go through the following process.

[Reset NVRAM/PRAM on Mac]

1. Please see below to initialize the settings information about the hardware.
   https://support.apple.com/en-us/HT204063
   *You will need to reconnect your keyboard and/or mouse after this procedure.
2. Restart macOS then the KOOV app. In the coding screen, click "Send" or "Test mode" and check if your Core is being recognized as a Bluetooth device.