yashsingh1/xdaforums huggingface dataset:
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

If your running MM you can only use lgup which you'd use the normal tot file with.
[G3 General] dornz:
so I press OK and this happens every time
[G3 General] hyelton:
If your running a custom rom before attempting to flashing back to stock always first flash a stock no custom rom via recovery based on your model. Do you still have recovery?
[G3 General] dornz:
No I cant boot in to recovery if I take battery out then put back in and press power button it go s strate to firmware update and when I plug back in to PC (fulmics) does not come up this time (seescreens)
[G3 General] hyelton:
Try using the old tot method flash tool and flash a tot file and see if that works
[G3 General] deltapak:
I tried both LGUP and LG Flash Tool. LGUP wouldn't detect my phone's model, and LGFT gave a similar error "can't get handset information". However, I managed to flash it using LG Mobile Support Tool (> Restore upgrade errors) which detected my phone's model and software version seamlessly, and flashed it. Then I proceeded to factory reset my phone.

What bothers me is that even after the flashing and factor resetting, the bootloop is there and the phone shows "61 apps to optimize" - the same number that appeared before flashing/resetting. Shouldn't the flashing and resetting wipe off my apps??
[G3 General] uxairmalik:
Can i flash lollipop zip(present along with kitkat tot) of D850 on stock kitkat?

via TWRP
[G3 General] hyelton:
The lollipop zip is an system zip. Not sure if it can be flashed via TWRP. But its not stock as you first need to be rooted.
[G3 General] hyelton:
Are you sure your using a USB 2.0? The detection issues in LG flashtool relate to using USB 3.0 ( which you cannot use) only usb 2.0 will work or in LG flashtool case can also be from running MM 6.0 as Flashtool is not supposed to work if the phone is running MM.

So did using LG Mobile support tool fix it? If it flashed successfully and you've still got a boot loop then its the common G3 battery issue or it could be some other hardware issue.

Remember there are still stock apps on the phone after reseting which is part of the Optimize apps screen.
[G3 General] deltapak:
I was specifically using USB 2.0 because I have heard on these forums that USB 3.0 often causes errors with such softwares. And yes, my phone was running stock MM when the error occurred so this might be what was up with Flashtool.

I have heard of this battery issue and tried to counter it by plugging my phone into the wall outlet while it boots and it still returned the bootloop. Also, with a faulty battery, the bottloop is fairly rapid (https://www.youtube.com/watch?v=DVlVlo3BVsw), and mine goes, every time, till the optimize apps screen.

So there are 61 stock apps still in there after a reset? That's a high number!
[G3 General] hyelton:
Never had one with a bad battery to experience it just know it happens.

61 is a low number for that. Remember thats things like: Phone, Messages app, some carrier bloatware? etc. Anything you normally see in your app drawer is included in that. I've seen carrier devices around 180 ish on the optimizing after reset.

Did you try booting without your sim card installed?
[G3 General] dornz:
so after trying tot this is what I get
[G3 General] dornz:
Weard since is says DL mode on phone
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Not weird at all, those errors occur when phone is running MM or using USB 2.0. As I stated above.

Also make sure each time you try your rebooting the phone.
[G3 General] deltapak:
Yeah. I am booting without a SIM card/SD card since the very beginning. Also, if it helps, I opened up my phone last night to just inspect if there were any cooked parts and I noticed that the digitizer cable had a very small tear in it. About the size of 1 cm. But I feel like that's not an issue because one of my friend's digitizer heads came completely detached yet his phone booted fine till the lockscreen, after which the touch didn't respond.

---------- Post added at 10:53 PM ---------- Previous post was at 10:51 PM ----------

Have you set COM 41 as the port for your LG in Device Manager?
[G3 General] dornz:
Gets to about 200 seconds and fails yes com 41
[G3 General] dornz:
And fails again (we can't communicate with phone)
[G3 General] deltapak:
Are you on stock ROM? If so, download LG Mobile Support Tool, install it, then start your phone in download mode. After connecting your phone to a USB 2.0 port on your machine, start the Support Tool, then go to Options > Upgrade Recovery. Proceed with the directions on your computer's screen. It will flash your device.

If you are not on stock ROM, trying giving this method a shot anyway.
[G3 General] dornz:
Thanks on fulmics rom 6.0 last week until this happend will give it a try ya
[G3 General] dornz:
Shut it just started working Yes dude yes
[G3 General] hyelton:
What did you change?
[G3 General] dornz:
Awesome stuff tots work s out ha ha I just kept pulling out cable then plugging it back in thanks for the ups yo
[G3 General] viddy135:
I have to ask, just in case, but with the lgflash tool, can I flash a mm tot?

Sent from my G3 D852
[G3 General] hyelton:
There's no MM tot. Only KDZ. Also yes you can, but if the phone is currently running MM you cannot
[G3 General] slimane94:
lg g3 d855 16 gb

Hello my friends you please help my phone lg g3 D855 when you flash and updated to 6.0 marshmallow I could no longer connect to the mobile data or wifi__bluetooth I can no longer be traced back to 5.0 lollipop ..... please. What is the solution?:crying::crying::crying::crying::crying:
[G3 General] hyelton:
Well did you reset your device? Did you add your apn for your carrier if not that would explain why you have no data.

Have you not tried using lgup and flashing it back to lollipop?
[G3 General] youngaffiliate:
HELP GUYS!! i followed the exact steps in the video for my lg g3 d85120g and flash tool was stuck at 10% for like an hour so i pulled out cable thinking i could of done it over... now my phone wont come on as normal it goes staight to "firmware update" even after i do a hard factory reset... can someone please help me with this? i have been trying to downgrade my lg g3 d85120g to kitkat because it came with android version 5.0.1 and nothing seems to be working please someone help... did i brick my phone? i just bought this phone please help!!
[G3 General] hyelton:
First of all firmware update IS download mode.. which is what your supposed to be in to flash firmwares.

Followed which steps? Tot or KDZ? There's 2 different methods file wise..

Your using a USB 2.0 port correct? USB 3.0 will NOT work.

If you used the tot method did you choose board_dl?
[G3 General] youngaffiliate:
hey hyelton thank you for replying ... ok so turns out all i had to do was change my usb cord wich was the cord that came with the phone, but there is another problem the phone is stuck on on blue screen saying " factory reset status 2" and in "LG flash tool" it says download fail , MINI OS STATUS!!! can u help me out here please
[G3 General] hyelton:
Your getting that due to not choosing board_dl on the tot and dll selection screen. Change that and reflash and you should be working again:)
[G3 General] youngaffiliate:
do you mean switching BOARD DL on action mode? ps: im a noob to all this...
[G3 General] nyr2k2:
so i had an issue where i made some dumb mistakes flashing, leading yo my phone refusing to power up. i could get a strobing blue light but that was it. ran into another guy who pointed me here. problem with anything i do is that while the phone is technically "alive," the screen doesn't turn on so i'm working blind.

anyway, i'm trying the method in the second post. i get to the point where the video and directions advise me i might need to pull and reinsert the USB, but the program never reestablishes the connection. it just constantly says waiting for connection. when i first start, i'll give it 15 minutes and nothing happens. when i pull and reinsert, another 15 minutes and it's still waiting for connection. any advice?
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Unless the screen is broken you have to be in download mode and which it would show it on the screen.

If you see something about BULK Or 9008 in device manager you have a brick

What did you do to get to the point your at now?
[G3 General] nyr2k2:
screen isn't broken--i can get a graphic of the phone charging when i plug it in after i let it completely drain. it just won't display anything else. here's the other guy who had the same issue: http://xdaforums.com/verizon-lg-g3/help/black-screen-vibrates-blue-green-led-t3450211

what got me to this point is that i wasn't paying attention when flashing and the bootstack ended up being some bastardized/non-functioning combination of 35b and 24b.
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Okay, but what do you see on device manager?

As you'll need to be in download mode before being able to flash any firmwares first.
[G3 General] youngaffiliate:
ok hyelton i tried and now it fails and it says " can't change to download mode"
[G3 General] nyr2k2:
no joke--right after after i posted that the process finally started, which occurred after about 25 minutes of being connected, waiting on a "waiting for connection" message.

now i'm just bootlooping. i did the factory reset which hasn't helped--yet--but i'm sure i'm on my way to recovery.

i got a S7 edge a couple months ago, but i really wanted to bring this guy back.
[G3 General] hyelton:
Did you make sure it's still set to com41 in device manager?
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Now that it's in a bootloop. Place is back into download mode and try reflashing.

When it says waiting on connection that's usually fixed by unplugging and repluging the device.
[G3 General] youngaffiliate:
yes i made sure it is set to com41
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Reason I ask is sometimes after unplugging and or using a different USB port it'll will change to a different port on its own. So each time you plug it in always check.

Also each time you sure make sure your freshly booting the phone into download mode each time. And still using a USB 2.0 port.

What firmware did you flash earlier? Was it a MM 6.0 firmware?
[G3 General] youngaffiliate:
ok it a d85120g and it came with android 5.0.1, now im trying to downgrade it to kitkat... so that i can get root access:) ok hyelton its also showing right now on the phone " auto touch test" " dont touch the screen!" and now it is saying in lg flash tool " USB port open fail 00000064 " also AAT Mini OS 3.1... on the phone screen. i also did noticed while it was working originally when it got to 94 percent the drivers were being installed on the computer...
[G3 General] hyelton:
That means it flashed your phone. You need to use the vol up and down buttons to go to reboot/reset and hit the power button and the phone will reboot.

Remember anything after 80% it's done flashing.
[G3 General] nyr2k2:
still stuck in a bootloop. can't get it to re-flash. just sitting. i even gave it 25 minutes this time. lol.

ah well. at least i've demonstrated to myself that it COULD work.
[G3 General] nyr2k2:
so this is where i'm stuck at--i try to re-flash, i get 94% of the way done, and then it fails. initially it gets to the point where it says something about checking MiniOS, then that it can't get MiniOS info and then fails. then, after that, it tries to reconnect and fails. repeatedly. i attached a snip of the first failure message and then the subsequent failures.

if i boot into recovery and try to do a factory reset, i choose yes, it goes to the android logo for approximately 2 seconds, then goes right back into the bootloop. any ideas?
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

The first screenshot shows nothing wrong. That's normal. It's supposed to almost always fail, anything after 80% it's done flashing. The rest is just rebooting of the device and flash tool will normally say fail which is fine.

The issue here is you need to choose board_dl at the tot/ dll selection screen. and reflash.

The 2nd screenshot is a connection issue.
[G3 General] youngaffiliate:
awesome thanks for the help hyelton i got it to work...:) now i got to find me a stable rom, i've seen people recommending N&N i tried it but it is not working good for me
[G3 General] ilmarinen:
Out of nothing my brother's D855 16GB with Lollipop does not boot, it stops in LG logo screen. After a long while its leds starts glowing but it never starts working.

It can boot in recovery mode so I have tried factory reset. Nothing happens. Then I have tried all of three methods mentioned in OP.

1. KDZ method stops at 4%, reports communication with phone is lost.

2. LG Flash Tool - TOT method I have downloaded LGD855AT-V10e-EUR-16G TOT file. When I have tried with D855's dll downloaded from provided link, it reports "invalid model". When I have tried dll used in LG UP it reports "READ_GPT_FAILED".

3. LGUP - TOT method Very similar to Flash tool. I have tried to refurbish and upgrade. All of 30n KDZ, 10a KDZ and 10e TOT files failed around at 6%.

Do you have any advices? Is there still hope?
[G3 General] hyelton:
So are you putting the device into download mode?? And your using a USB 2.0 port?? USB 3.0 will not work.
[G3 General] ilmarinen:
Thank you. Yes I am using USB 2.0 port and phone is in download mode. I have seen computer connected to COM41, and image name is shown correctly in the screen for instance.
[G3 General] hyelton:
Did you set it to com41 in device manager as well?
[G3 General] ilmarinen:
Yes, I have set COM41 for USB device, also replaced megalock.dll for lg flash rom.
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Okay just making sure you had lgemodem or lgeandroidnet set to com41 in device manager.

Do you see a bunch of random drives under my computer?

Also try another USB cable?

And freshly putting the phone into download mode each time you've tried? Not rebooting each time can also cause this issue.
[G3 General] ilmarinen:
Nope, there is no random drives. Should I see them? I have tried different USB cables, restarted phone in download mode everytime, and restarted computer whenever I have changed program. But nothing happens.

I have lost my hope to fix it by myself. I have read somewhere JTAG connection is used by some services. Do you think they can fix it?
[G3 General] hyelton:
No drives should not show up, I asked as that would be mean could be a brick if it did. Something is missing or best bet is to try another PC if it's possible.
[G3 General] muzaffarkhan95:
I updated my g3 through kdz from lollipop to marshmellow, now i want to downgrade it to lollipop again, so same method right?? N i can downgrade it right?? Just comfirming please do reply. Thanks.​
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

Why did you quote the entire OP?

What is your model?, Downgrading depends on the model. Along with what method? There's more than one method here. You use LGUP once your on MM and make sure you choose referbish as you must wipe the device when downgrading.
[G3 General] neptune_:
Hi,

I have a D852 currently on Fulmics 6.5 (modified stock MM ROM). I'm using Windows 10.

I've tried using the KDZ method to flash the Rogers MM file but the LG tool is not able to communicate with the phone at all. The phone is in download mode. I've tried all USB ports on the laptop and none of them work.

I tried the TOT method as well for Rogers LP image but the LG tool never shows 'Ready' for COM41. I changed it in device manager already.

I need to go to factory image to unlock the phone to use with another carrier.

Any help is much appreciated!

Thanks!
[G3 General] hyelton:
A few issues here 1 you would first need to flash a stock based rom based on your model that's not customised like Fulmics as it can causes issues when going back to stock.

2nd if the phone was running MM 6.0 flashtools wont work as you use LGUP so that would explain why it's not working.

3rd for the tot method it won't show ready unless you click the yellow arrow.
[G3 General] neptune_:
Thanks for the quick reply! I'll respond to your points:

1. Fulmics is stock based ROM. I'll try another thats more close to stock, but its also MM.

2. What tool can I use that will work with MM rom? LGUP?

3. I get a USB connection error message after clicking the arrow.
[G3 General] hyelton:
1. Not exactly. It's Customised. Which does cause issues. Especially with getting LGUP to detect the phone and causing a ton of issues being able to get back to stock due to the non stock build.prop of Fulmics. Which is almost brought up everyday for people running Fulmics here.

2. Lgup which is in the 2nd post.

3. That's related to running MM and or using a USB 3.0 port.

Do make sure you are using only a USB 2.0 port.
[G3 General] neptune_:
Ok I'm a bit confused. The first post says LGUP tool is in post #3. The TOT tool is in post #2. So which one should I use since my phone has MM rom?

Also, in post #3 for LGUP, the instructions say its for D855 only. I have a D852 so will that still work?

This is what I should try?

- Flash less-customized stock based MM rom.

- Use LGUP from

post #3

correct? (Post #2 shows the TOT tool.)

Since I can only get a stock based rom that's MM, can I still use the TOT tool from post #2? I'm using usb 2.0 port.

Thanks
[G3 General] hyelton:
Sorry yes I mean post 3. I forgot I moved he tot method to its own post. Yes lgup works will all models. Yes flash a D852 debloated type rom or something like that. Just pure stock rooted pretty much. Then flash using referbish with LGUP.
[G3 General] neptune_:
Thanks for clearing that up bud! Will give it a try tonight.
[G3 General] neptune_:
I've flashed a stock debloated ROM but now LGUP says the model is 'unknown' and won't run.
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

When the phone is in the OS?

With the phone turned on and booted into android try that
[G3 General] neptune_:
Yes it's booted up into the OS. Will try another rom.

EDIT: another stock based rom seems to be working now... yay! Hopefully I can unlock the phone once its up.

Thanks very much!!
[G3 General] hyelton:
Your welcome :). Yeah custom roms cause issues with lgup detecting the device. Most likely build.prop changes.
[G3 General] Muhammadsoli:
Can anyone give the link to KitKat firmware and to the downgrade tutorial plz
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

The guide is in the first post... along with the KDZ files.
[G3 General] Sp8ky:
Ok so right now I have Fulmics 6.6 on D855.

I want to restore to stock rom to prepare it for warranty. Which is the way to go?
[G3 General] neptune_:
I just did this yesterday. Check the last few posts.

You need to flash a debloated stock rom first. Then follow instructions in post #3 for LGUP tool.
[G3 General] shekinahsmoke:
Im running stock 6.0 on d850. to go back to kk should I choose board dl or upgrade dl? Ive been reading through but now Im a little confused. I chose board dl in my first go round and got failed. of course tho, I was using windows 10. switching over to win 7
[G3 General] hyelton:
You would choose board_dl. But what do you mean by failed? Explain? Remember if it failed at 80% that's normal. It's supposed to.

Also since your running MM you must use LGUp to flash firmwares.

And also not sure if latest versions of the D850 firmwares have any antirollback or not which means you cannot downgrade if it does.
[G3 General] shekinahsmoke:
I'm sorry failed. as in didn't flash anything.

I'm using AT&T. Can I use LG up then with that?

---------- Post added at 10:01 AM ---------- Previous post was at 09:51 AM ----------

I found this

https://m.reddit.com/r/LGG3/comments/4ue29y/does_lgup_work_for_the_att_d850/
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

. LGUP works with ALL models. And is the only tool for flashing devices that are running MM. (with the exception of it working with the tot method tool at times)

If it didn't flash anything you changed com port in device manager to com41 correct? Phone in download mode? Using USB 2.0? USB 3.0 won't work. And when flashtool said ready you unplugged and Replugged the device?
[G3 General] shekinahsmoke:
Yes to all those [emoji1]
[G3 General] drotaru:
i cannot manage to flash my LG g3 F460 using the KDZ method and lg flash tool i have tried all drivers possible ...

tried on win 7 win 10 and win 8.1 nothing seems to work ... it stops at 4% cant comunicate with phone :(

are there any TOT files for the F460 ?
[G3 General] hyelton:
Was the phone running MM? If so that's why as you need to use lgup
[G3 General] Kast09:
Can someone help please? I have TWRP installed and marshmellow. I just want to flash a specific MM firmware. Do I still need LGUP or can I install the kdz file from TWRP? Am I missing something?
[G3 General] viddy135:
U can't install kdz files through twrp
[G3 General] K2silver:
okay so I installed Fulmics 6.6 and had 3+ min boot time but package installer UI hanging and random reboots soooo STOCK here I come....I installed stock via tot file 10b (Bell/Canada) and instructions posted......Battery is being sucked back very fast and boot up is still being laggy! :( So I go and update OTA back to whatever the latest one is, will that fix any of my problems? Then I can root and go from there????

Also I have ruined almost 2 microSD cards into 6.0 with their god damn permissions ****...*end rant

Learning is hard and scary....but fun in the pay off.......

ROOT THE PLANET!!
[G3 General] hyelton:
When you flashed back to stock you also performed a factory reset after correct? And after you performed the ota update?
[G3 General] K2silver:
Okay so there are more problems here than I first types.......also THANK YOU for such a quick response! :D

When I flashed back to stock I had the phone up and running BUT when resetting it would hang at LG screen and I would often have to pull battery out. >:( so NO factory reset after flash .tot file...swear to god I should be tester for LG on ****ing phones up.

I will re-try a new stock flash then factory reset after it and see if that helps. I tried an OTA earlier today and everything was downloading but it would then freeze on reboot...pull battery restart then NOW ALL IT DOES IT HANG ON LG LOGO SCREEN.

FML.....So I will do flash then boot into OS and power down and factory reset....*fingers crossed*

I literally have panic attacks over this phone......THANX XDA ELFS for all the help.

ROOT THE PLANET!
[G3 General] shekinahsmoke:
nothing worked for me just fyi. thanks anyways. maybe i have a newer patch that destroyed dirty cow.
[G3 General] hyelton:
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ &amp;amp; TOT Method With LGUP

What didn't work? Have you tried flashtool and lgup? And using a USB 2.0 port? USB 3.0 will not work. Also what's your model? Is it a Usa model?
[G3 General] K2silver:
Factory reset after EACH OTA update???? Been doing that so far to be suuuuuure. :/
[G3 General] shekinahsmoke:
What didn't work? Have you tried flashtool and lgup?

As I stated, Im using d850 at&t ... thats american usa. and yes usb 2.0. I used flashtool 1.8.6 didnt work. wouldnt even begin flash. Again, thank you for your attention. If it's not communicated via screen, I want you to know that you are very helpful and thank you. Sincerely.
[G3 General] geokilla:
Does anyone know the dialer code to get into the hidden menus on stock Marshmallow? I just tried the 3845 one I found on Google and it doesn't work.

Edit: *#546368#*85X#
[G3 General] hyelton:
So your using *85(what your model is? after the 3845?

What exactly are you trying to get to?