Requirements
1 Stock LG G2 LS980 Firmware
2 LG Flash Tool
3 Dll file for LG G2 LS980 (LGLS980_20130904_LGFLASHv151.dll)
4 MegaLock.dll
All the above can be found on zip file here
LG G2 LS980 Drivers
Once the required files are downloaded and unzipped, install the LG Flash Tool to default C:\LG\LGFlashTool\
Then unzip the MegaLock.dll.zip file and place the MegaLock.dll file in same directory (C:\LG\LGFlashTool\)
Very Important
Connect your phone to Pc/Laptop
Under Pull Down notification of your phone change the USB settings
From MTP to Charge Only
Under Device Manager of your Pc/Laptop, Right click on Ports(COM & LPT) as show below in red and select
properties in yellow.
Select Port Settings as show below
Select Advanced as show below
Select COM Port Number marked in red and choose COM41 marked in yellow as shown below.
It should look like as shown below in red
Unplug your phone from Pc/Laptop, switch it of.
Put the phone in DOWNLOAD mode by pressing and holding VOL UP key and plug in the USB cable,
If you see download mode on phone, give it 5 secs and unplug the USB cable from the phone.
Phone has to be in DOWNLOAD mode even after unplugging the USB cable.
Run LG Flash Tool & select manual mode marked in red as shown below in pic
Once you have selected Manual mode, we have to choose the dll related to LS980, select browse as shown in pic below.
Choose the dll file as shown in pic below, This dll file should be found in the main unzipped folder.
After choosing the dll file now we have to add the firmware which needs to be flashed. so select "add" shown in red in pic below.
Now select the firmware file with the extension *.tot (LS980ZV7_1.tot in our case) as shown in pic below.
Once both the dll and the firmware are select choose ok as show in pic below.
Now press the yellow arrow mark marked in red as shown in pic below.
When you select the yellow arrow, you might get a popup saying "MilkyWay Control Port Open FAIL"
just select ok as shown below in pic.
Wait for it !!!!!
IF YOU GET THE ABOVE PIC !!! its time to connect your phone. Its very important for your phone to be in CHARGE ONLY mode.
This you have done earlier in the beginning.
Simple connect your phone and wait for the tool to get connected and the flash process to start.
Roughly it should take 2 to 3 minutes to flash. The phone will reboot when its still in flash process at around 85% or more.
Thats it your phone is fully flashed to complete stock, since its a full flash wait for the phone to boot as if its booting first time.
WAIT FOR IT. UNPLUG and enjoy your phone.
Feel free to ask questions before proceeding.