i have LG G2 LS980ZVC, software update option not available?

[AC Question]

i have LG G2 LS980ZVC (4.4.2 KITKAT) an update available of 483 MB and it say before installation go to system update>update profile prior to installation. However i am not able to find this option. When i install update without going to update profile update don't happens and the same update notification of 483 mb agains appears on the screen. what should i do?
is there any code to update profile? how can i update to lollipop?