# OAK4 Status Light

This reference applies to OAK4 (RVC4). LED patterns describe system state and can also be overridden by an application. Record the
Luxonis OS version when reporting unexpected behavior. A color alone is not a diagnosis of a hardware fault.

## LED status codes

| Pattern | Meaning |
| --- | --- |
| Flashing Blue | Device is waiting to be set up. |
| Flashing Yellow | Setup or OS update is in progress. |
| Flashing Green | Setup completed successfully and the device is ready for user configuration. |
| Flashing Red | Setup failed or the unit detected a possible power incompatibility—check your cable and supply. |
| Blinking Yellow at boot time | On boot, the device detected a 15-20W power supply and enters throttled performance mode. Boot
may take longer, so wait for the LED to turn solid blue. |
| Solid Orange | [Factory Mode](https://docs.luxonis.com/hardware/platform/deploy/oak4-som-development-guide.md). If this is
unexpected, follow the instructions under [Factory
Mode](https://docs.luxonis.com/hardware/platform/deploy/oak4-som-development-guide.md) to resolve the issue the or record the OS
version and contact [support@luxonis.com](mailto:support@luxonis.com). |
| Solid Blue | Device finished booting and is ready. |
| Solid Green | Pipeline is running. |

## Manually set the user RGB LED

You can temporarily override the user RGB output by writing RGBA values (0-255) to the status LED device file. First you need to
[SSH/ADB](https://docs.luxonis.com/hardware/platform/deploy/oak4-deployment-guide/oak4-advanced.md) into the camera and then run:

```bash
# ADB/SSH into the device first, then on device run:
echo 255,255,0,0 > /dev/status_led
```

If you need to override the root-controlled LED state, address the `:root` device entry instead:

```bash
# ADB/SSH into the device first, then on device run:
echo 255,0,0,255 > /dev/status_led:root
```

To permanently change the default color palette, update the LED entries inside `/etc/agentconfd/conf` so the new values persist
after reboots.