Hi Uli,
thank you very much for your reply. I can't find my serial cable so I need to order a new one. I thought I can recompile a new kernel on the device and install it in /boot but I have no output so I can't see why they are not booting. I used the 4.1.15 with all the cmfx6 patches, but it won't boot.
Cheery,
Jan