Huge thanks to rdmitry0911 over here. This thread and a sweet open box deal at Microcenter resulted in picking up my 17Z990 as a result last Saturday. I feel like I'm at a pretty good point with my setup today. This isn't intended to be an install guide, but a dump of all my notes to help anyone that might be facing the same.
Not Working:
[Success] LG Gram 17 (17Z990-R.AAS9U1)
Not Working:
- ...
[Success] LG Gram 17 (17Z990-R.AAS9U1)