Default [Q] LG-D950G 4.4.2 Upgrade

This is my first post so my humble apologies for the lack of forum prowess. I have an unlocked ATT LG D950G to T-Mobile running a LG Flashed Stock 4.2.2 D950G10a version. It's rooted with Towelroot1. I have looked everywhere on pretty much all of the threads for either the .dll/.tot files for an LG Flash procedure or another procedure to force the update to 4.4.2. Has anyone successfully upgraded this phone from 4.2.2 to 4.4.2 and if they have do they have the process in which they did it? Thank you for any help you can give.