[Sprint LG G3] Celly624:
FIX BRICKED LG G3 (LS990) "Stuck In FastBoot". "LG Security Error". "Factory Reset 2"

Hello Im posting my solution to how I had fixed my bricked LG G3 LS990. I bricked it a few days ago and searched tons of forums and youtube videos and it was tough trying to find a solution for this variant of the LG G3. And I had seen that everyone who was having the same problems I had couldnt find the solution either, but luckily somehow I had figured it out...I even took my phone to the Sprint store after my phone was getting "Security Error" and they couldnt even fix it and had to ship me a new one in which I no longer need since I fixed it myself...

My phone had went through these 3 phases in this order, so I also have the instructions in same order ( Be Sure To Follow All Directions Closely)

-Stuck In Fastboot

-LG Security Error

-Factory Reset 2

SINCE THE LG G3 LS990 PHONE IS THE ONLY ONE IVE TRIED IT ON THEN IM ASSUMING ITLL ONLY WORK FOR THIS VARIANT, BUT I HAVE SEEN MANY FORUM POSTS WHERE ONE METHOD WORKS FOR MANY LG G3 VARIANTS.. JUST BE SURE YOU HAVE THE CORRECT FILES FOR YOUR LG G3 VERSION

WHAT YOULL NEED

Micro Usb

LG Device Drivers

LG FlashTool

LG FirmWare Extractor

LG G3 DLL File

LG G3 TOT File

(Download Files Below)

LGG3 LS990 Stock Recovery (DLL & TOT Files Included)

drive.google.com/file/d/0B_v75o0wLpE5Q3hra2xJRXlMbm8/view?usp=sharing

FastBoot Files

filedropper.com/lgg3fastbootfiles_1

LG Firmware Extractor

filedropper.com/windowslgfirmwareextract-1250-release_1

FIXING BRICKED LG G3 LS990

-LG STUCK IN FASTBOOT

STAGE #1

Install LG driver package.

Connect the phone to PC.

Wait until Windows will install ALL Drivers.

Open folder containing fastboot.exe file

Hold Shift + press right click

Click on Open Command Window, once window shows up type the following commands exactly as shown with spaces and press the (Enter) button or simply copy, paste, and hit enter every time you paste.

fastboot erase boot (Enter)

fastboot erase aboot (Enter)

fastboot erase recovery (Enter)

fastboot erase laf (Enter)

After erasing those files, we will flash the recovery and boot files...

fastboot flash boot boot.img (Enter)

fastboot flash aboot aboot.img (Enter)

fastboot flash recovery recovery.img (Enter)

fastboot flash laf laf.img (Enter)

fastboot reboot (Enter)

Phone should reboot normally if not try these steps...

-FLASH ALL PARTIONS

fastboot flash boot boot.img (Enter)

fastboot flash aboot aboot.img (Enter)

fastboot flash recovery recovery.img (Enter)

fastboot flash laf laf.img (Enter)

fastboot flash dbi dbi.img (Enter)

fastboot flash modem modem.img (Enter)

fastboot flash persist persist.img (Enter)

fastboot flash PrimaryGPT PrimaryGPT.img (Enter)

fastboot flash rpm rpm.img (Enter)

fastboot flash stl1 stl1.img (Enter)

fastboot flash tz tz.img (Enter)

fastboot reboot (Enter)

If These dont work then you should have at least encountered the Security Error screen.

Follow These Next Steps For Fix

-----------------------------------

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YOULL NEED

LGG3 LS Stock Recovery

LG FlashTool

- LG SECURITY ERROR

1.Power Off the LG G3

2.Plug in a MicroUSB Cable into Your Computer

3.Press and Hold the Volume Up Button on the LG G3

4.Plug in a MicroUSB Cable While Still Holding the Volume Up Button

5.Wait Until You See a Firmware Update Screen

6.Let Go of the Volume Up Button

7.Press the Windows Key on Your Keyboard

8.Search for Device Manager and Open it

9.Locate the COM & LPT Ports Option and Expand it

10.Make Sure You See LGE Mobile USB Serial Port Or Something similar With LGE

11.If Not, Download the LG USB Drivers and Install Them

12.Double Click LGE Mobile USB Serial Port

13.Click Port Settings

14.Click Advanced

15.Change the COM Port Number to COM41

16.Click OK and then Click OK Again

17.Download LG FlashTool

18.Extract LG FlashTool and Install

19.Do Not Run LGFlash Tool When it Finishes

20.Navigate to the Extracted LG FlashTool Folder

21.Copy MegaLock.dll to C:\LG\LGFlashTool (assuming that is where you installed it)

22.Download the Stock Firmware for Your Specific LG G3 Model

23.Extract the Stock Firmware File to Your Desktop

24.Open LG FlashTool

25.Click on Manual Mode

26.Click the “…” Button at the Top Right

27.Locate the .DLL File from the Extracted Firmware Folder

Click Add

28.Locate the .TOT File from the Extracted Firmware Folder

Click OK

29.Click the Yellow Arrow at the Top Left

30.Wait Until the Gray Box in the Middle Disappears

31.When You Have One Yellow Box that Says Ready(all other boxes say disabled)

32.Unplug the MicroUSB Cable from the LG G3

33.Plug in the MicroUSB Cable Back into the LG G3

34.Let LG FlashTool do its Thing

35.After ~5 Minutes the LG Flash Tool Should Say “PASS!!”

36.If You Have a Blue Screen on Your LG G3, This is Good

37.Blue Screen Should Say “Factory Reset Status” with the Number 3

38.Unplug the MicroUSB Cable from the LG G3

39.Remove the Battery and then Replace it

40.Power the LG G3 Up

41.You Should See the LG G3 Boot to the Setup Screen

42.This Means You are Back to the Stock Firmware with No Root

If These Steps Havent Gotten Your Phone Fully Functional Then Hopefully You At Least Made It To A BlueScreen With Factory Reset With Number 2 Or 3. If 3 Then Reboot Your Phone And It Should Boot Normally, If Not Or If You Have A Number 2 Then Follow These Final Steps

- FACTORY RESET STATUS 2

I followed these suggestion & it worked on my LS990 (Sprint G3) : On LG FlashTool I switched to Board DL instead of Upgrade DL

Your phone will reboot to the AAT Screen – Click OK (Yes, it says not to), then press normal boot (+power).

Your phone will reboot and all should be well.

It seems to have helped a few people get past that screen :laugh::cool:

Hopefully This Should Help Just About Everyone Having These Problems! :angel: