[please sticky] to anyone trying to ota update and it won't take:

My phone is rooted and I've tried to update it twice. It still won't update. I didn't change my build.prop, the only thing I did was uninstall a couple of system apps. What do I need to do to update?

Sent from my LG-LS840 using Android Central Forums

Use the unbrick method from the stickied forum to go back to GB then connect to wifi and go to System > Updates > Update LG Software,
That will put you on Ice Cream Sandwich, if you want to stay on GB when ever you see an update notification, ignore it.