The Bluetooth config options are: Enabled, Pairing Mode and Fixed PIN Value. Bluetooth config uses an admin message sending a `Config.Bluetooth` protobuf.
The default pairing mode will be determined based on whether the device has or does not have a screen attached to it during the first boot (or with a stale device state) unless manually configured via the Bluetooth config options.
- **Screen Attached:** If your device boots up for the first time (or with a stale device state), and a screen is detected, the default pairing mode will be set to `RANDOM_PIN`. Should the attached screen be removed after the device has already been booted, the default pairing mode of `RANDOM_PIN` will remain unless manually changed to `FIXED_PIN` or `NO_PIN`. It is recommended the pairing mode be updated prior to removing the attached screen.
- **No Screen Attached:** If your device boots up for the first time (or with a stale device state), and no screen is detected, the default paring mode will be set to `FIXED_PIN` with the default value listed below unless manually configured to a custom value.
If your pairing mode is set to `FIXED_PIN`, the default value is 123456. For all other pairing modes, this number is ignored. A custom integer (6 digits) can be set via the Bluetooth config options.
Because the device will reboot after each command is sent via CLI, it is recommended when setting multiple values in a config section that commands be chained together as one.