@NiLuJe: can you give me some links and point me in the right direction ?
something is not working anyway... since i used Kubrik at every restart i get the system diags page.
i have to use the mfgtool every time and select the kindle main profile to get the "regular" kindle screen. At the next restart i get the sys diags.
now is it possible to fix this and revert to normal screen without selecting an option from the diags screen (touch not working) ?