To unbrick/upgrade/Restore Your Verizon LG G3 (LG VS985) back to stock by flashing latest kdz firmware with LG UP, You need:
I saved all files in “C:\lg” folder
Step 1, Install the USB Drivers
Step 2, Install the LG UP Software – LGUP_Install_Ver_1_14_3.msi
Step 3, Install the LG 8974 DLL — LGUP_8974_DLL_Ver_0_5.MSI
Step 4, Now connect your Phone to PC Via USB Cable and Run the LG UP Software
Wait until LG UP detect your Phone. If LG UP screen shows up, Go Step 5.
If LG UP can’t find your device, you need to put your phone into download mode manually
Turn off your phone, press and hold “Volume Up” button and plug in the USB cable from your computer to the phone.
Now run the LG UP, wait LG UP install necessary usb drivers for your Phone.
When LG UP screen shows up. Go Step 5
Step 5, From LG UP Screen, Process option, Select Upgrade
Click Bin File, Select the KDZ file you just download
And Then Click start.
Wait until the step shows 100% complete, unplug usb cable, and reboot your phone,
You should have Android 6.0 M now on your LG G3 VS985