Hello guys. I am not able to find in A2 manual what does two yellow blinks means after every power up of the system. Detailed situation :
1: plug the battery
2: LED blinks in all the colors
3: LED blinks two times yellow *
4: LED indicates the choosen flight mode

*If someone can explain me what the yellow blink means I would be very thankful.

Hey there. Anyone who knows what this indicates ?

Please take a short video of this please.