Diags menu doesn't use a "magic key"
Originally Posted by kaznelson
How to restore Paperwhite? ("Repair Needed")
Damaged this file: AdManager.jar.
USB-disk is accessible less than 10 seconds, "Magic Key" for the diags menu is unknown...
. On previous kindles you start the diags menu by booting with an ENABLE_DIAGS file on the USB Drive, but this method does not work for the PW.
EDIT: I have explored the PW diags menu, but I cannot remember how I got there... I hope I posted it somewhere. I see that I posted information ABOUT using it but now HOW to get there: