Hello my friend, i know tgread is year old but i need your help. Im on lg g4 h81520i and try to downgrade to LL via LGUP but keep getting error 0x2000. I believe because im using wrong kdz with wrong antirollback, can you help me? Like which LL KDZ is safe to rollback to from 20i?if its not on the list that i gave you then am afraid not... until someone finds a way or if LG decides.. some people still have hopes.. that eventually someone will find a way to get root and twrp... maybe someday.. :fingers-crossed: