[NiLuJe]

@Kalja:

* Like I said, I'm (fairly) sure the lack of feedback on screen is normal during the reboot. If the K4 is anything like the K3, it's known to take forever to boot.
* Yep, probably because of the hard-reboot that it's whining about the xml file (unless you forgot to upload the folder).

* And, yep, on main, the usual search bar in the home screen. It's three separate commands.

One other thing that you could try, is to skip step 3) & 4) (ie. reboot directly to main after the first boot to diags).