Since I seems to have the same issue as you seems to have,
Same issue as if the nand flash chip has been damaged.
And noticed after (allot of) searching to the fault figured out that in my case the box just worked when I disconnect the front panel.
And thus, as it may seems that there is some issue with the front panel which I still need to find out..

In any case, see in the picture snap to see if you have the same errors before trying it,

It may also be the front panel in your case.
So, see if it also helps you..
Disconnect the flat cable from the front panel.
See with the usb serial mode if the box starts up and which ip it gets.
And test the box by the webif browser.

I'm not claiming that it is, buy may.
It's at least worth to try/