Banana PI BPI-M5 LED turn on but nothing happens

I unpacked the new banana pi M5. I put power source on and the blue and red LED come on. But nothing else happens.

What does this mean? I didn’t find any documentation.

Followed the getting started guide, but it does not describe the LED behavior.

Found out that if there is no boot able SD card then the two led stay solid, and the green led never starts blinking.

onboard emmc is empty, you must flash image first.