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Root How To Unbrick LGLS840 Back too LS840ZVC OR LS840ZVD Firmware

tjsanders

Well-Known Member
All files in zip are officially from LG (DLL,TOT,LG FLASH Tools)
Credits and Thank You belong too LG and special thank you too n0ve

I have a new method how too flash your bricked phone back to factory stock. This flash is the LG Official firmware. This flash will wipe out everything and correctly flash prl,stock recovery,all partition. So let the get the ball rolling and lets hopefully get your phone back too fully working. Please follow all steps no short cutting, or altering files may cause issues with hardware and software too your phone. Please make sure you can get your phone in download mode before doing anything else.

Directions - Please read them carefully

1. Please make sure you have your LG Drivers installed before you start this process

2. Please download this file from this link provided I am giving you a choice on the firmware you want too reflash the phone

LS840ZVC https://www.dropbox.com/s/j63hoo0jsocid8y/LGVIPER.zip
LS840ZVD https://www.dropbox.com/s/3timbamztkewkdh/LS840ZVD.zip
3. When the download is complete. Please open the zip folder and you will see a folder inside the zip called LG. take the LG folder and move it too C: drive

4. Please have at least 60 percent battery or more and put the phone in download mode. too get the phone in download mode. Plug the usb card and wait for battery icon too show and then hold vol up and power and keep holding it until you see a screen that says downloading in progress.

5. Now go too your device manager and look for your com ports and find your LGE Android USB Serial Port. Now double click it and look for advance and then click it. now we have too change the com port too 41. when you are done press ok and close it out.

6. Unplug your usb connection from phone and leave phone in download mode.

7. Now open your windows explorer go to C:\LG\LGFLASHTOOL and look for the filename LGFLASHTOOL and right click it and run as admin.

8. The program will open up. Now we need too program the LG Flashtool Software with Official LG DLL and Firmware and Comm Port

9. Go to port settings in the LG FlashTool program and select port 1 only. and please ok.

10. now we need too go too model settings in LG FlashTool and we need too select dll and tot files. I know it will show that we show the tot and dll already setup. But we too remove them and re add them. So do that now by choosing manual mode. and then select your dll and tot and please ok when done.

11. Now plug your usb cable back too the phone.

12. Now we are ready too flash the phone.

13. too start the flash you will press the arrow on the top left side of LG FlashTool and begin the process. Please don't let your desktop or laptop cutoff during the process. Please do not remove phone from usb cable until it says 100 percent It will reboot a couple times still don't remove phone until it has reached 100 percent. When you have reached 100 percent you are now flashed with the Official Firmware.

14. Good Luck and hope this guide will help you and please show me so love and click the thanks button. I busted my hump too get these programs.

Notes- If your phone doesn't start the flash after pressing the arrow. just unplug the phone the download mode will stay on and replug in the usb port you used and within a few seconds it will begin.

Notes- Please use windows explorer too unzip the file so you can see LG folder too copy too c: drive of your pc. also once the phone reboots for the first time you can unplug the phone. also if you remember your msl number please do a ##786# enter your MSL so you will have a fresh voice and data.

P.S. Will be posting screen shots of each step
 
Just curious, what if the phone is a true brick and can't get into download mode, which is what a brick is. :)

Nice write up though.
 
That is a hard brick my friend and Its paper weight . I would try too make sure you are getting into download mode and try it
 
Is there a fix for the links to the files? I keep getting this "error (509) This account's public links are generating too much traffic and have been temporarily disabled!"
I did find this link though and it is working Dev-Host - LS840ZVD.zip - The Ultimate Free File Hosting / File Sharing Service

Flashed my Zact LG Viper back to Sprint, activated it on RingPlus and all is good to go, except all the friggin' Sprint bloatware! Should work on most Sprint MVNOs that allow BYOSD.
Is there a particular ISC Root method that is recommended?
 
11. Now plug your usb cable back too the phone.

12. Now we are ready too flash the phone.

13. too start the flash you will press the arrow on the top left side of LG FlashTool and begin the process. Please don't let your desktop or laptop cutoff during the process. Please do not remove phone from usb cable until it says 100 percent It will reboot a couple times still don't remove phone until it has reached 100 percent. When you have reached 100 percent you are now flashed with the Official Firmware.
I have flashed two Zact Vipers now, but each time I run into a situation where the LG Flash Tool only gets to 98% and then shows Download FAIL in the progress bar.
Then in the box below the progress bar it lists
"Verno"
v
v
v
v
Error WM_Progress_MSG
We can't communicate with specific port
Fail
??
Devices all seem to work with no problems if I just go ahead and disconnect and reboot. But.......?
 
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