Originally Posted by Harellevy
But then you need to download all the apps all over again no?
No, just flash the update zip. (That's called a dirty flash in case you didn't know)
If you use custom kernels, flashed mods or custom system apps, they might have to be reinstalled. You also need to reinstall Xposed Framework from the app if you use that.
But remember to back up your phone in recovery before you update!
Primary device: LG G2 (D802, International)