Experience with Dirtysanta / Dirtycow


#1

I tried to root my H990N. A bad experience.
USB DEBUG AND DEVELOPER MODE of course set
I Had to downgrade it with LGUP the Securiy: Patch was to new.
LGUP the worst horror in 20 years+ in IT.
After a LOT of time, try and error, it was running and the downgrade worked.
Proceedig as given on XDA
The next horror started:
CHMOD 0777 on /, -> not allowed
Fastboot twrp -> device locked
For the moment I rebuild the device and its running fine.
Maybe in a few weeks I try again.
What I not know is this:

  1. Did the developper mode setting survive the downgrade?
  2. Did the USB Debug Setting survive the downgrade.?