I've downloaded a V20h ROM, extracted some parts of it and put it in a flashable ZIP! There are two variants: The Full Package and the Light Package. I recommend the full one, but it is your choise. If you only want the modem, then take...
Thanks to my friend who has the OnePlus One with it's great battery life and his kernel settings you can get 5h and more of SOT on your G3!
It should work on every ROM and every kernel.
I'm not responsible if anything goes wrong, ...
I could create an app via Tasker for you if you wish.
I updatet today through LG PC Suite.
It removed Root, but I rooted again with Purple Drake.
D855, international unbranded
Must be something in Android File Host, I didn't change anything. Try again now.