A: Yes, but you need the device-specific DLLs. Standard 1.16 with common DLL works on Velvet (G910) and Wing (F100). For the LG Rollable (never released), no.

Flashing the wrong .kdz file can render your device unusable.

Use this for a clean install (wipes all data).

LGUP 1.16 Modified Patched: The Ultimate Guide to Flashing LG Devices