Stock KitKat D800 manual install with Root.
You will lose custom recovery! You will need to downgrade if you want custom recovery and be able to flash custom ROMs.
Some models may have touch input issues. If so you will need to restore to stock. Search thread to see if your model will have issues. It may also depend on model and country.
This ROM is from the German Vodafone KDZ.
List of confirmed models and country:
D802 16GB UK
This list is new and more models will be added when confirmed. If your model not on list it does not mean it will not work. You will have to try yourself or search through thread.
You will also need to downgrade, return to stock using the LG Flashtool and the proper KDZ file for your phone. You may find more info about returning to stock in the General G2 section.
Download ROM and SuperSU.
ROM Name D802_Stock_KK.zip - MD5 a5e62b21bb26dc84a59ed665add906a7
ROM Name D802_Stock_KK.zip - MD5 8356199d4e0f5b79dfdee46844ba79cf
Thanks to @Nobodys_me for the mirrors below.
Wipe system, cache, data and dalvik cache. If you do not you may have issues.
Flash ROM - You need a custom recovery and will lose custom recovery after update.
DO NOT REBOOT
If you get an error with flashing about loki then do not worry. ROM is ok and will boot. It just can't add loki to boot.img so it gives error but no big deal.
If you boot loop than doing a factory reset in recovery my fix it.
Reboot and Enjoy KK with Root
@bullghost for his awesome firmware extract tool.
@Chainfire for SuperSU.
@bigfua for the tot.