Originally Posted by h1uke
sorry, this is not a solution
yet, but I'm pretty sure that by using a proper factory cable
one can put their KPW directly into a Diag Mode.
Analyzing the u-boot source code and 34708 PMIC datasheet
almost confirmed that.
I already made a cable, but couldn't find a proper resistor around.. later.
That "factory cable" at your first link is just a homebrew microUSB cable, with the addition of a 1K resistor on the ID pin. Does the PW support that? It would be great if this can be done with such a cable.
Some "host mode" adapter cables already have such a jumper. It could be interesting to see if one of those can be used. EDIT: No, the ID pin connects to GND on an OTG host mode cable, but in a factory cable it connects to +5v.