I am a new owner of a dreambox two ultra, and I faced this problem after a journey testing different images of the dreambox two.
The device is solid and fast, but picture quality is not so, and channel editing and selection is a nightmare..
Now I am facing this problem, the box doesn't boot and doesn't accept the online recovery as a solution., and after a long search I had this message "no valid partition table for mmcblk0".
How do I restore the partition table for the device?
Any help is welcome, and thanks in advance