Good day @KusakabeMirai, thanks for your patience.
You mean the other 2 leds are on but dim in comparison to the green one or that they are both off?
The green led just indicates the brain is getting power, the orange one is used to indicate the state of the autopilot and the blue one is used for specific tasks, when calibrating the ESCs for example.
To get to the point where you can arm you need to:
- Flash the OS in the SD.
- Install the autopilot.
- Parametrize the autopilot.
- Calibrate the ESCs.
You should be able to find what you need in our docs. Alternatively, if you got any problems you can post again, we'll do our best to answer faster.
So very sorry for the late response.