Thank you for the great manual!
After and actually during the flashing, I ran across a problem.
The right side of the screen went black during booting and TWRP. Once booted i have a full screen working but the right side is 'flashing / flickering' around 40(??)fps (VERY annoying).
It's an Nvidia...
jokes aside, anyone else who saw the northern lights tonight, what did you think, i thought they were beautiful for a while, before it went to a vague pink
maybe later they'll pick up again