How to Unbrick/Unroot LG-G2-LS980 To Complete Stock

[Vinod Nayak 443]

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.

Edited February 23, 2014 by Vinod Nayak

[Vinod Nayak 443]

FIX for people who have installed TWRP and stuck after OTA update

Source

If you see TWRP everytime you boot after OTA update, Follow the code below.

VERY IMPORTANT:

CODES HAVE TO BE TYPED EXACTLY AS SHOWN WITH SPACES & PUNCTUATION, ONE SMALL MISTAKE CAN GIVE YOU A HARD UNRECOVERABLE BRICK. 

You should have ADB access, connect phone and use this command.

Code:

adb shell
dd if=/dev/block/platform/msm_sdcc.1/by-name/fota of=/sdcard/fota-backup.img
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota

After all the code is sent, use TWRP menu to reboot the phone. or use adb reboot command.

If you dont have ADB, then use TWRP terminal command and follo the code below.

Code:

dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota

Reboot

Edited February 23, 2014 by Vinod Nayak

[solarisx21 17]

@ People doing this.....before doing this please make sure your EFS is safely backed up.

Because if you lose it during any flashing process - your phone will be rendered a useless brick with no way of going back.

[gauravjc 47]

Vinod ji,

I'm on ZVA version looking to downgrade using this method but phone is not being detected by LG Flash Tool... windows 7 cannot locate CDC Serial drivers....

pls help .. thx

[Vinod Nayak 443]

See if you're drivers are installed properly or not.

Sent from my LG-LS980 using Tapatalk

[solarisx21 17]

@gauravjc make sure you downgrade the radio first before downgrading the rom...else you can end up with a brick.

[gauravjc 47]

Thanks solarisx21 ... how do u downgrade the radio can u pls help ??

[solarisx21 17]

Download the ZV8 radio (from xda autoprime post) flash radio first, then downgrade rom. Let me know if you cannot find the radio...will post link.

[gauravjc 47]

Thanks got it ....

[UbaidullahQadir 0]

Vinod bhai I've read other posts of downgrading to stock but its written there you have to change the date of the LG flash fool and disconnect the internet and stuff, do I have to do the same thing before starting the process?

[UbaidullahQadir 0]

I'm trying to do this my I dont see LGE something under ports,

its showing RIM virtual serial

See if you're drivers are installed properly or not.

Sent from my LG-LS980 using Tapatalk

when Im trying to install drivers, it says BASE SYSTEM DEVICE drivers not found

[Vinod Nayak 443]

Vinod bhai I've read other posts of downgrading to stock but its written there you have to change the date of the LG flash fool and disconnect the internet and stuff, do I have to do the same thing before starting the process?

That's the old method. This is the easier way. Here no need to change date or disconnect internet. Please read the OP.

Sent from my LG-LS980 using Tapatalk

[Vinod Nayak 443]

hi,

as far as i know, u cannot download ringtones from the internet into LG 2030 ... u're stuck with the ones on R world. all u can do with the cabe is surf the web using your phone as a modem ... nothing more !!

You need to enable diag mode ##3424# enter SPC and enable select on enable.

Sent from my LG-LS980 using Tapatalk

[UbaidullahQadir 0]

i unplugged the phone when it was still at 94%, it wasn't going any further. LG flash said download fail

does that mean im in trouble now? or it was done already?

my phone is fine though

[Vinod Nayak 443]

i unplugged the phone when it was still at 94%, it wasn't going any further. LG flash said download fail

does that mean im in trouble now? or it was done already?

my phone is fine though

That's a bug in the flash tool. It never goes to 100%, at one time it says rebooting 120 secs, that's around 85%, at that time phone reboots, you can unplug it. Your phone is complete stock now.

Sent from my LG-LS980 using Tapatalk

[st_7 138]

^^^ Yes it is fine once the phone reboots. You don't need to worry about what LG Flash Tool is saying once your phone boots successfully.

[UbaidullahQadir 0]

Download the ZV8 radio (from xda autoprime post) flash radio first, then downgrade rom. Let me know if you cannot find the radio...will post link.

Hi, my g2 (Sprint) got updated to LS980ZVB (4.4.2). I want to downgrade or root, what could be the solution?

Thanks.

[UbaidullahQadir 0]

i unplugged the phone when it was still at 94%, it wasn't going any further. LG flash said download fail

does that mean im in trouble now? or it was done already?

my phone is fine though

That's a bug in the flash tool. It never goes to 100%, at one time it says rebooting 120 secs, that's around 85%, at that time phone reboots, you can unplug it. Your phone is complete stock now.

Sent from my LG-LS980 using Tapatalk

ok thanks for the help, and what is the other problem that you have mentioned about the TWRP? Am i gonna have that issue if i have not installed TWRP?

[ev1lb0ygen1us 27]

Download the ZV8 radio (from xda autoprime post) flash radio first, then downgrade rom. Let me know if you cannot find the radio...will post link.

Hi, my g2 (Sprint) got updated to LS980ZVB (4.4.2). I want to downgrade or root, what could be the solution?

Thanks.

Sprint released 4.4.2 ROM update for G2? Or is it just the firmware update?

[UbaidullahQadir 0]

Download the ZV8 radio (from xda autoprime post) flash radio first, then downgrade rom. Let me know if you cannot find the radio...will post link.

Hi, my g2 (Sprint) got updated to LS980ZVB (4.4.2). I want to downgrade or root, what could be the solution?

Thanks.

Sprint released 4.4.2 ROM update for G2? Or is it just the firmware update?

My android version updated to 4.4.2 and software version updated to LS980ZVB. I thinks sprint is testing Kitkat on G2, its not a final version. Do you have any solution to root or downgrade this version?

[solarisx21 17]

^Why do you take updates without understanding what it is ?

First read up about the update on XDA and then take it.....will avoid a lot of headache.

[drmadhu 87]

@solarisx21 if u not have solution. Kindly not give answered.

But not give this type of answers.

Sent from my XT907

[Vinod Nayak 443]

i unplugged the phone when it was still at 94%, it wasn't going any further. LG flash said download fail

does that mean im in trouble now? or it was done already?

my phone is fine though

That's a bug in the flash tool. It never goes to 100%, at one time it says rebooting 120 secs, that's around 85%, at that time phone reboots, you can unplug it. Your phone is complete stock now.

Sent from my LG-LS980 using Tapatalk

ok thanks for the help, and what is the other problem that you have mentioned about the TWRP? Am i gonna have that issue if i have not installed TWRP?

That's if you have updated the phone with TWRP recovery. Many get stuck on TWRP mode, phone gets a bootloop on TWRP. Only for that. Good that you got the 4.4.x update. Where are you located?

Don't downgrade. For now stay with that update

Sent from my LG-LS980 using Tapatalk

[solarisx21 17]

@vijaymalhotra -

Its not a question of whether I have a solution or not.....if you do things without understanding the process, you could end up with a bricked device. This is for your own good....

Eg: taking a update on a custom recovery, doing a flash without esn backup... - leads to a brick. Why go through the trouble of unbricking steps, when it can be completely avoided in the first place.

Whats the harm in reading up a little ?

[J Rafael Bakeo Miranda M 0]

Hey i have a situation, mi laptop doesn't show PORT LCP??? just usb port