I try to boot the i.MX 7 Dual SABRE Board from my Raspberry Pi via uuu. I followed the steps from the guide. So far it works, until the point where the new Image L4.14.78... should boot to the board.
The Terminal says: Wait for Known USB Device Appear - Prep 1/0.
But when i turn on the board it boots from the sd Card. So it seems, that the Boot configuration is not working. I`ve tried it several times but it`s always booting from the sd Card.
when i remove the sd card, there is no output over the serial port.
And even then nothing happens in the Terminal.
Where is the mistake?