LG H815 TWN MM to Lollipop

Hello Everyone !! As the title says i need to downgrade to lollipop i cant seem to TWN lollipop version of H815...can European version of lollipop install in my phone

http://ift.tt/28XeZUg

i have gone here cant seem to find TWN version of Lollipop

i need to downgrade because of severe battery drainage, also can somebody please explain what is V10c n two types of V10b in the website down below under G4's taiwan kdz
http://ift.tt/293BNoX

from xda-developers http://ift.tt/28Xf2zi
via IFTTT