Hey guys, i own a LG G3 F400s with stock marshmallow v30e. I wish to downgrade it to lollipop so that i can use autorec to install TWRP on my phone. I tried using LG Flashtool 2014 to flash lollipop v20f kdz, however the tool wont let me flast it. it'll give me a server connection error after 4%...