Power button not starting the UP board

stan

I‘m having the following problem with the regular up board (4gb 64gb) using the 5v6a power supply (intended for up2) and win10pro:
The powerswitch does not turn on the board. The board does boot up immediately when the power supply is connected and i can shut it down with a single press on the power button, but the same button does not boot it up again. Only way i could find is to disconnect and reconnect the power supply.
Is that normal behavior? How can i make the power button turn on the up?

stan

No answer? Could someone at least say if that is normal behavior or if somethings wrong with the board or maybe BIOS settings?

stan

In case someone is having the same problem:
I did a BIOS update to UPC1DM07, now long pressing the on switch does actually work!