How to Unroot the LG G Flex2 (Sprint)
So you’ve had enough fun with your LG G Flex2 by rooting it, flashing custom ROMs, and just tinkering around with it in every way imaginable. But, now, sadly, you have a need to get it back to stock.
Whether you need to unroot the LG G Flex2 to send it in for warranty, sell it to someone, or just want to have a clean slate to start all over with it, this is going to be how to do it.
Essentially, we’re going to use LG’s own flashing tool and flash the stock firmware from LG onto the device. This firmware contains the recovery, boot image, stock system image, everything you need to wipe out any changes you’ve made and get it as close to the way it was when you bought it.
I. Before You Begin
1. You should have rooted your device using the procedure given here.
2. Please backup anything that you think is important as the following procedure will wipe off your device.
3. You need a Windows based PC to do this procedure.
4. Download and install LG USB drivers on your PC, if they aren’t already installed.
5. This procedure should only work for the Sprint (LS996) variant of the device. Please do not try this on any other device or you’ll brick it.
How to Unroot the LG G Flex 2 (Sprint)
To unroot the device, you’re going to flash the stock ROM on it using Flash Tool. It’ll bring back all the default apps and settings on your device and you will be completely stock.
II. Downloading Required Files
1. Download Stock ROM and save it to your desktop.
Stock ROM (it’s the file with .tot extension)
2. Download DLL File and save it to your desktop.
DLL File (it’s the file with .dll extension)
3. Download Flash Tool and save it to your desktop.
4. Download Megalock DLL and save it to your desktop.
III. Unrooting the LG G Flex 2 (Sprint)
1. Double-click on Flash Tool executable and follow the on-screen instructions to install the tool on your PC.
2. Copy Megalock DLL from your desktop over to the C:\LG\LGFlashtool directory on your PC. This is the directory where Flashtool was installed. If it’s hidden, you might want to change the settings on your PC so that it shows hidden files.
3. Turn off your device.
4. Pull the battery out of your device. Don’t put it back in until you’re told to do so.
5. Hold down Volume UP and plug in your device to your PC using a USB cable.
6. Your device should now be in download mode.
7. Open Control Panel on your PC and search for and click on Device Manager. It should launch the Device Manager utility on your PC.
8. Click on Ports and then double-click LGE Mobile USB Serial Port.
9. Click on Port Settings followed by Advanced.
10. Click on COM Port Number dropdown and select COM41.
11. Click on OK to close the dialog box.
12. Unplug your device from your PC.
13. Hold down Volume UP and plug in your device to your PC. This is to reboot your device again into download mode.
14. Right-click on Flashtool executable and select Run as administrator to launch the tool.
15. Select the Select Manual Mode checkbox on the top.
16. Click on “…” next to DLL box and choose the DLL File that you downloaded earlier to your PC. This is not the Megalock DLL file, but this is the other one that you have downloaded.
17. Click on Add next to S/W and select Stock ROM .tot you downloaded to your PC.
18. Click on OK in the tool.
19. Click on the yellow arrow icon in the tool and it should begin the flashing process.
20. Wait for it to flash stock ROM on your device.
21. When the tool’s done flashing ROM, your device should reboot.
21. You’re now unrooted!
After that, you’re all set and back to stock. Enjoy!
Let me know if this helped you in the comments below.
hi thanks for the article. my flex 2 is LS996ZV4 can i still use this method? the version you provide is V5. is it okey to flash my V4 phone with it?
Hi Lenny,
If the device is the same as the one mentioned in the procedure, you won’t have any issues flashing the firmware. Just look at the model of your device and make sure it matches with the one listed here in this procedure, software version doesn’t matter.
Hope that helps!
Thanks Mahesh i’ll try this method.
Hi, after flashing completed 100% a Failed message appeared and now my Lg flex 2 is not turning on nor going in download mod. kindly help
Hello My Flex is LS996 ZV7. I tried the above prescribed procedure, but it failed. Can you kindly advice
Thnx in advance
Hi Sumit,
The above procedure is supposed to work with your device. What step are you stuck at?
Let us know. Thanks!
will it work on my ls996 zv9?
Should work. Thanks!
Hi, after flashing completed 100% a Failed message appeared and now my Lg flex 2 is not turning on nor going in download mode. kindly help
Hi Shahid,
Are you sure you tried this on a Sprint LG G Flex 2 that has the model number – LS996 ?
Let us know. Thanks!
Hi Mahesh. My model number is LG LS996KIT and the software version was 5.1.1V Z6 with super user installed. I tried to flash exactly as you instructed and the flash tool went upto 100% after that the fone went blank and the flash tool displayed rebooting message. after couple of minutes the flash tool displayed Failed message and the fone remained blank (lifeless). Then I disconnected the fone and tried to turn it on by using power button only but it did not work. then I tried vol down + power key but that did not work either. then i connected my fone with laptop by using vol up key, that did not work either and the fone reamained lifeless/dead during all of above. Now I think I have issue with boot (dead boot). Now, if I connect my fone to laptop, The Device manager shows ” QHUSB_BULK” message. KINDLY HELP. your help will be greatly appreciated. best wishes and stay blessed……
Hi Mahesh, I am 100% sure that my mobile is Sprint G Flex 2 that has model number- LS996, and its not just me out there having this issue. Kindly google it and you will find thousands of people who flashed ZV 5 version on ROOTED ZV6 and got their phones bricked. THE ISSUE IS WITH BOOTLOADER as boot loader is 5.1.1 and trying to load 5.0.1. Kindly find the solution. FOR OTHER PEOPLE READING THIS MESSAGE. PLEASE DO NOT FLASH ZV5 ON ANY OTHER VERSION OTHERWISE YOU WILL BE IN A DEEP ***T HOLE…….NEED SOLUTION PLS…..
Hi Shahid,
It seems there’re issues with the stock ROM that’s being used and I believe flashing another stock ROM should solve the issue for you.
You can do that by Googling for a stock ROM for your device and then getting it flashed on your device using the above procedure. Make sure to use the ROM that you had before on your device so that you know it works just fine. That should do the job for you.
Thanks!
Hi Mahesh, thanks for your prompt reply. my problem is that my fone is not going into download mode. no combination of buttons is working. my fone is just like dummy now. when I connect to pc “QHUSB_BULK” message appears in device manager. how can I get my mobile into download mode now? Again NO BUTTON COMBINATION is working on my fone. regards.
my phone is LS996ZV5. So, can i unroot it by LS996ZV5_10.tot file? anyone success on this? Thanks mod.
Yes, that should work, Steven!