My Board is not booting up, blue flash

Hello there, I recently bought a Dragoboard 410c and I just cant get it to boot up, all the time i put the power cable in the BT flashes for about a second and then nothing…

I now connected the Dragonboard UART to my raspi to get some debug info, but I cant seem to find anyone with the same issue (The log is attached below).

I already tried flashing tusing the recovery guide, i tried multiple versions: 171, 170 & 159 but still no success :confused:

Thanks for help!