@moem Thank you! from https://forums.ubports.com/topic/6356/lg-g4-international-h815/3, I can not use ubports-installer. I using
.\ubports-installer_0.9.1-beta_win_x64.exe -f ./h815.yml
but It cannot see my lg.
It's adb.
C:\Users\cat>adb devices
List of devices attached
LGH815b1a6bdea device