yashsingh1/xdaforums huggingface dataset:
[G3 General] Igoritza:
Can anyone help me please .. ?

G3 D855 16Gb version, here is the problem:

My PC wont install ANY (new) MTP device that is LG brand. two of my G3 units show only "charging" without the options to change to MTP. At first I thought It was my PC and did ALL the internet advices there are:

- reinstall drivers, multiple times, with complete delete (registry entries) and tried again, with all possible LG drivers versions

- manually pointed installation to winsxs / IMF / LG Mobile driver folders

- deleted upperfilters/lowerfilters from registry (I had none, even though someone suggested to create and then delete them)

- gave my self all possible administrator privileges, tried again - nothing, even made a separate admin user and tried from there, nothing

- removed ALL LG related entries from registry and tried again - nothing

- tried different cables, different USB ports

- gave all my USB ports extra juice

- updated windows with every update there is except for language packs

- searched all possible threads from internet for yet another solution

Right now my only option is to reinstall windows 7 which is something I would like to avoid, as there are tons of stuff already set on my system because of my work and I really would need to get my system into order for 3-4 days straight. Im suspecting that only possible solution would be that my wpdmtp.INF file is somehow corrupted as it holds the information to properly install MTP devices.

Next was my phone - G3 the one that I use, runs Lollipop and I maybe thought system is somehow flawed so I checked all the options (hidden menu) but no option for activating MTP is there, and when I plugged in the other G3 the same error appears

http://i.imgsafe.org/4def67120c.png

I even tried another G4 that I normally used on that PC before the last system reinstall, and it also cant install MTP, for what ever mysterious reason there is

Being that this thread is the only one where people regularly reply, could someone PLEASE help me get my MTP connection back, or at least point me to instructions of updating G3's without USB cable ? I know KDZ can only run via PC because they are much more than just system (everything is there, system, boot, modems, etc) and I wanted to try Autoprime's ZIP installations but no one over there wants to reply and his initial explanation of how to do it is disgracefully bad so that even advanced user could understand what to do exactly
[G3 General] mrnegativity:
Did the guide in post 2 which applied to my phone. everything was fine until it got to rebooting the phone, the phone just went black, and now it's COMPLETLY bricked I can't even get it back into DM Mode. It said Download failed but it was like 60sec after it started the reboot.

---------- Post added at 06:35 PM ---------- Previous post was at 06:25 PM ----------

I Started here... lgtribute.com/lg-tribute-2-stock-rom-download/ got the files for my Tribute 2 there and then proceeded with your guide. Everything was going to plan until the end. Any thoughts on what went wrong and how I can try again?
[G3 General] hyelton:
What method did you use? Tot,kdz, or LGUP to flash ? I'm going to guess that maybe you didn't use LGUP and there was maybe an antirollback for the firmware it was currently running.

What was the reason for needing to flash back to stock?
[G3 General] mrnegativity:
TOT with LGUP

I was flashing stock because I was in a boot loop after factory resetting my device.
[G3 General] hyelton:
If the phone was never rooted and performing a factory reset resulted in bootoop that's most definitely a hardware failure.
[G3 General] mrnegativity:
Yeah, I left out that detail. It was rooted, apparently, that's what caused the bootloop as I needed to unroot before performing reset.
[G3 General] dagasp10:
Why it starts and after 5-10 seconds it boot in twrp?
[G3 General] hyelton:
It would be helpful if you explained what your doing.

If you attempted to flash your device and this happened then the flash failed or didn't start.
[G3 General] dagasp10:
Ok, i solved.. Ty
[G3 General] Master-Blaster:
Bro, I DL the 1.6gb "D850_20F_Lollipop_Stock.zip" file from the AT&T D850/Lollipop folder for the G3 to downgrade from MM to LP using the LGUP method but there is no TOT file inside, only boot.img and system.img files. Am I supposed to change the name of the 1.6gb file to .tot or .kdz instead of .zip?
[G3 General] hyelton:
That's not a tot file. That's a file for manually flashing lollipop. You have to flash KitKat that's the newest available tot for that device.
[G3 General] Master-Blaster:
Cool. Thanks bro. Then I DL the V10 file and up to LP. That'll work. Thanks again!
[G3 General] hyelton:
Your welcome! Yeah. Just make sure your on AT&T. As you can only OTA update as long as the device has an AT&T sim in it.
[G3 General] Master-Blaster:
Yeah, I'm on Cricket (owned by ATT) with a Cricket ATT compatible sim card. If I was stuck on KK I wouldn't mind anyway as it's my fav. Only up to LP because of the radical change they made in the way Android works with LP & up. A bit more efficient in the way it processes and behaves than pre-LP. Not that big a deal though really.
[G3 General] hyelton:
Okay! Yeah cricket can be hit or miss. I couldn't get my moms new Galaxy S6 to update with her cricket sim so I had to use my AT&T sim to update it. But I've updated a LG tablet just fine with a cricket sim so it's odd.

Strangely cricket uses there own network ID despite it's the same network.
[G3 General] Master-Blaster:
"Strangely cricket uses there own network ID despite it's the same network."

That may be because Cricket limits their high speed to 4 megs 4G and 8 megs on LTE. If they didn't separate their network ID then we'd get whatever speed ATT gives. Then again I may not even know what I'm talking about. lol.

KK and LP much easier to root and the only reason I root is to un-cripple the Mobile Hot Spot feature. With Cricket unlimited "high speed" data, I have full high speed (well, 8 meg anyway) wireless internet & phone service for 55 bones a month. Living in the styx near the Grand Canyon my internet service is quite limited. Un-crippling the Hot Spot solves it.
[G3 General] Master-Blaster:
'Aight bro, using LGUP I just flashed my newly purchased G3 w/MM back to KK. Was the fastest smoothest flash I ever did in the history of my life. Took about 5 minutes. How crazy is that? :good: Also, other than the micro USB 2.0 port on my Acer Switch 11 tablet, the detachable keyboard only has a USB 3.0 port. The 3.0 port worked just fine.
[G3 General] wiqi11:
Fail after Fail : Factory_boot complete

I had installed a custom ROM via TWRP and yesterday my phone went into a boot loop. I am trying to flash my phone but it failed on 94% throwing error Fail : Factory_boot complete. Its again stuck in loop. I am using LG flash tool on windows 10.
[G3 General] hyelton:
Anything after 80% is just looking for the phone to boot up flashing has completed. Only if before 80% if it fails has it actually failed so ignore that error.

What rom did you install? Was it meant for your model? And what file did you flash? Have you tried using LGUP?
[G3 General] wiqi11:
Thank you so much for replying. I had installed CYANOGENMOD 13 for D850. I worked fine for 6 months. I haven't tried LGUP yet. Can you please send me to some direction because I am a beginner to this stuff.
[G3 General] hyelton:
It's all on page 1 of this thread. It's down a post or 2. First off try choose board_dl on flashtools and reflash. Flashing when CM is installed does cause issues at times.
[G3 General] wiqi11:
If this is the post you are talking about? I think I lost you on "board_dl on flashtools". Can you please elaborate. :confused::confused:
[G3 General] hyelton:
On the screen where you select the tot and dll file choose board_dl instead of upgrade.
[G3 General] wiqi11:
Thank you for your precious time. I tried flashing my phone using LGUP as well. It threw error "cannot find partition name : cust " just after 6% into the flashing.
[G3 General] hyelton:
But did you try choose board_dl in flashtool?
[G3 General] JobYUL:
Hello hyelton... It seems the "Canada D852" stock ROM file on storagecow.eu (ROGERS 20D852AT-01-V10b-302-720.zip) is dead. Would you have still have it?

I want to root my D852G running MM and I want to downgrade to LP...

Thanks
[G3 General] hyelton:
What do you mean by dead? If a link is dead and it's on the StorageCow site you wouldn't see it at all, it wouldn't be listed. If your trying to download it with your phone it Might not download correctly that could be the cause. What error are you getting? The file started downloading fine for me.
[G3 General] JobYUL:
Strange... download was not starting on my Linux machine but is starting fine on my Windows!
[G3 General] wiqi11:
Thank you for response. yes I did flashed it with board_dl. it failed. Since I couldnt find kdz file for D850 att, I flashed it with D85530B_Global.kdz file. Phone is working but there are no sim or wifi signals. what should I do next?
[G3 General] hyelton:
What do you mean by failed? If you read my previous post and guide it will almost ALWAYS "fail" but anything after 80% it didn't actually fail.

The D850 is TOT method only... Why did you do that? Now you've most likely lost your EFS partition and in which unless you backed it up there's no way to get it back. Which means it will no longer get service.

Now it's going to be a difficult task to try and flash the D850 tot now. And hope you didn't loose your EFS.

Easiest way is to riskfully flash

http://oceanhost.eu/ny9gkj31kzey/D850PR10a_05_kdz.rar.htm and hope it doesn't completely brick your device and then flash it back to D850 firmware.

Never flash wrong model firmware.
[G3 General] wiqi11:
Thank you for your response. Cell phone signals are back on but wifi wont turn on. It was a total miscommunication on my part and I apologize for that. I tried flashing tot files multiple times but it didnt work. my phone would not get out of the bootloop. When I tried board_dl option, it installed mini os but it wont go any further.
[G3 General] hyelton:
Mini OS you reboot from there and it will boot into android.

The tot file you where flashing is the ONLY way of putting it back to normal. There's no others.

I'm glad you didn't loose your EFS that would of been bad.
[G3 General] wiqi11:
Thank you for your kind reply. I had rebooted from mini OS by taking out my battery and putting it back into phone but phone was again stuck in the loop and it didnt help. Do you suggest flashing my phone again with TOT file? Also, If I can backup EPS partition in case I need to again flash my phone with KDZ?
[G3 General] hyelton:
You have to reboot through miniOS using reboot/reset option. It's only can't use your phone with the d855 firmware. Flashing that will now cause problems flashing back to what it's supposed to be. You'll now need to attempt to flash the correct tot using LGUP and or flashtools.
[G3 General] brasilis:
Does anyone know which .tot file which I must use in a LG D855P 16G from Brazil? I didn't find anything in StorageCow.

Is there any problem using the European version (LGD855AT-V10e-EUR-16G.zip)?
[G3 General] noobSU:
Hi, [MENTION=2607037]hyelton[/MENTION], Nice to see you here! I wanted to ask that i have korean LG G3 f400L. Can i use the LGUP downgrade from MM to LP or Kitkat? Will it work? I was confused about that as you said only for D855. If i can. Then how many files i should download from the server?

1- LGF400LAT-00-V10a-LGU-KR-MAY-18-2014-0.zip

2- LGF400L_20140513_LGFLASHv160.dll

3- Lollipop_F400S.kdz
[G3 General] hyelton:
Hi! :)

You can use LGUP with all models. But I wouldn't suggest it. I don't or have ever owned a Korean model. But newer firmwares seem to not be downgradeable. And downgrading just results in a fail and it's tough to find a modern kdz to flash back onto the device.
[G3 General] noobSU:
If i will be failed flashing it on my F300L. I would need the exact build version KDZ for my F400L on which it is running right now? & It will be flashed with LG UP or LG flashtools?
[G3 General] hyelton:
It would need to be the exact build and or whichever build made the change to where you couldn't downgrade which there's no way to tell. You'd use LGUP.
[G3 General] noobSU:
God! I'm once again trapped in a locked arena after my stupid Galaxy S4 verizon which was not even bootloader unlocked. & Once again this! :( I have searched everywhere. My LG G3 F400L is running F400L30h software version of MM. I didn't find it's tot or anything :(
[G3 General] edpinal72:
LGG3 return to stock condition

Hi I was reviewing your thread , and perhaps I could help me... Before I follow these steps will this remove the Trojan Triada virus.. Thanks
[G3 General] hyelton:
If your talking about your phone and if it's not rooted factory reset would remove whatever may be on your phone.
[G3 General] edpinal72:
re: LGG3

Ok I understand, however I actually did that first thru the settings reset the phone to factory settings. And unfortunately this will not go away, after reading online this virus roots it self and keeps unpacking the file thru factory reset and the LGG3 is not rooted... I'm new a trying to fix andriod phones I've done windows before. Anyway the LGG3 gets 3 viruses Trojan Slocker , Trojan Hidden app backdoor after factory reset and I cantnot remove them. I not sure what to do... :confused: And thank you for your time and reply... :good:
[G3 General] mxasf:
Hey all, just read the last ~200 messages. (First wanted to thank hyelton for patiently helping so many people).

I have been a long-time D850 user (AT&T), and have used the "LG flash tool" before to restore to KK, in order to give me access to custom roms / rooting, etc. My last D850 had hardware issues ("fade-to-black" problem), so I just bought a brand new D850.

The new D850 came with "MM" installed. Initially I tried "LG flash tool" and it failed, and caused the phone to boot loop. Then I read about how LGUP should be used instead for MM phones. I ran LGUP with the standard D850 KK tot file (LGD850AT-01-V10d-310-410-JUN-19-2014+0.tot). LGUP appeared to run successfully (no errors). Then the phone booted into the KK android start screen, but then crashed, and started boot looping. I could enter download-mode again and run LGUP again, but with the same outcome. I also did a "factory reset" (power-on, volume down), but to no avail.

I'm a little worried I may be victim of the "anti-rollback" mechanism hyelton described? Or maybe just something became corrupt?

With a previously severely-bricked D850, I did a hardware-level reset, involving shorting two terminals on the motherboard and using the "BoardDiag.exe" program to flash key partitions. (excellent XDA tutorial by l33tlinuxh4x0r, for the sprint LG-G3, but it worked on my old D850 as well)

Any thoughts on fixing bootlooping? I think my next option is trying this "boarddiag.exe" procedure again on this new phone. If that doesn't fix it, fortunately I bought an extended warranty and should be able to return the device for refund.

thanks

-mxasf
[G3 General] Markavich:
Good afternoon,

I've followed the LG Flash Tool guide to the letter and everything seems to work well, except for the last step.

Once the flasher connects to the phone to begin flashing, I receive a "Model Information Check FAIL" error. Any clue as to what that means, or how to fix it?

Thank you in advance.
[G3 General] hyelton:
Are you using a USB 2.0 port? Remember USB 3.0 won't work and can cause that exact issue. Also phone in download mode correct? Also try another cable.
[G3 General] hyelton:
Hi,

Your choosing refurbish and not upgrade correct? Choosing upgrade will cause that type of issue. Also have you tried using the button combination to do a factory reset?

If it was antirollback you would have bricked your device to the point of no power at all.
[G3 General] Markavich:
Thanks for the speedy reply!

Yes, it's in a USB 2.0 port, and I have just tried three other cables (the OEM one for my S7e Wireless charger does not work; only 4 pins inside the micro port) to no avail. Same Failure.

If it helps, I don't believe I can get into DL mode, as the phone is unresponsive outside of plugging it in without the battery. I get the USB connect/disconnect sounds from my PC, so I know it's recognizing it.
[G3 General] mxasf:
Hello, thanks for your response - Correct, I did "refurbish" and not "upgrade". And also did the button combination for factory reset (power on with volume down; it says "do you want to reset"? I say yes; it says "are you sure you want to do the reset"; I say yes).

A little stumped; thanks for telling me the symptoms of "anti-rollback". Fortunately that doesn't seem to be the problem, as it attempts to be booting.

Will continue playing around with it. Since it is now "basically reverted to KK" (even though it doesn't properly boot), I may try to re-flash again with teh TOT method (LG Flash Tool). If that doesn't work, I may try the hardware reset method (link here).

-mxasf
[G3 General] hyelton:
The phone HAS to be in download mode or booted into android before it can be flashed.
[G3 General] Markavich:
Alright, looks like that's that end of the road for me. May this phone rest in peace.

You've been very helpful, and as such I have sent a Thanks.

Cheers!
[G3 General] hyelton:
What happened? to put it in its current state?

Give this a try

https://xdaforums.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
[G3 General] mxasf:
I was having the same problem on my D850. In my case, my phone was factory-flashed with Marshmallow (MM), and it turns out that you can't use the LG Flash Tool for MM phones. You need to use a different tool (LGUP). The tutorial is near the top of this thread and indeed, LGUP seems to work easier than LG Flash Tool. I'm having additional problems getting my phone to work. But I think it's important to reiterate that if indeed you are flashed with MM, you might just be using the wrong tool. good luck!
[G3 General] hyelton:
Oops I totally forgot about that! But seems there phone doesn't boot into download mode.
[G3 General] mxasf:
Yup, I will also vouch for that tutorial (written for a sprint LG-G3; but it seems to work on all models, including my D850), for apparently hard-bricked devices. I had a D850 that appeared *completely* kaput, i.e. download mode and stock recovery were both giving the dead android on my display. The above method will allow you to completely transfer all of the essential tools/partitions to your phone, from whichever TOT file you are using.

It may seem intimidating, needing to short a couple pins on the motherboard, but it really wasn't that difficult. (and you're provided feedback since the QualComm driver loads up). I recommend a 2 cm piece of thin copper wire, bent in a U shape. Within 15 minutes, I was re-flashing images from the TOT file to the phone.
[G3 General] Markavich:
Oh wow, thank you! I believe I did take the OTA update to MM when it was my daily driver. I'll give that a shot!
[G3 General] hyelton:
Remember you'll still need to be in download mode.

If you see a odd named device under device manager then it's most likely dead.
[G3 General] Markavich:
Literally nothing outside of normal use. I gave it to my brother to use as a Wi-Fi only device as he does not currently have an active phone plan and it just shut off on him while riding the bus back home and never rebooted.

I'm pretty sure I have an old USB cable I can shred for the wire. I've shorted pins before (S-off on my HTC Vivid) so I'm comfortable with it.

I'll give it a shot when I get the chance and report my results.

You two have been most helpful. It's been a while since I logged on to XDA but I remember why I love the community. :good:
[G3 General] Markavich:
Good morning!

Ok, so, I've managed to get all the way through the shorting, and re-flashing of the .tot files. Did it in order from the guide that I was linked to flashing the "sbl1" last after reinserting the battery.

However, the phone is still unresponsive unless I try to plug it in without the battery. I don't have my spare battery or the battery charge cradle anymore, so I have no way of verifying if it is battery related (one would think you would be able to power it on while plugged in, though). I'm going to try holding the power button for 60 secs to bleed the residual power.

In Device Manager, I am not seeing anything odd. It shows up under "Ports" as LGE AndroidNet USB Serial Port (COM 41) so I assume it has the ability to talk to WIndows.

I can no longer use LG Flash Tool and it still shows up as "Unknown Model" in LGUP. I feel as though I flashed Lollipop when I believe I took the Marshmallow OTA update from before it was retired. :confused:

Any further help is immensely appreciated.
[G3 General] MJunior89:
Run as Admin!

Hello from Brazil! Big thanks for the help!!

You forgot to mention if there is a probem of "UNKNOWN model", you must run LGUP as Admin! :good:
[G3 General] hyelton:
Glad it worked for you! Must always run as admin. But normally unknown model relates to a dll issue.
[G3 General] MJunior89:
Ah yeah! Sure it is about the dll file! But I installed the correct dll first the LG UP as you said, but I got the "unknown model" error because I was not running LG UP as admin!
[G3 General] RizqiN:
Hi, is storagecow.eu down?

I keep getting 403 Forbidden.

Thanks
[G3 General] hyelton:
Please check again. You must of been of been trying to access it while I was changing some settings. :)
[G3 General] adamdelozier:
Started to download, got to 30% and now getting 403 error again...
[G3 General] hyelton:
As I stated above. I've been doing some setting changes to my server and each time it switches the web server that happens.

Please go ahead and finish your download I have to delay my work for now to do some other things.
[G3 General] RizqiN:
Ah, thanks. It's up now. Maybe you could put up some message there saying it's under maintenance, haha.

Btw I'm trying to downgrade my LG G3 D855 from Marshmallow to Kitkat. I heard it has better battery life than LP or MM. I'm getting bad SOT here with MM. I don't really use the new features in LP or MM, so, yeah. I've tried LP and MM with Android One. Doze didn't really help. Maybe it's because I always use Greenify with xposed and the kernel has deep sleep. If I understand what it does correctly, it doesn't reduce battery use when the phone is being used, right?

I read somewhere here (in xda) you said the only possible method was using LGUP, which is on the third post. I'm trying to follow it but I can't tell which KDZ is Kitkat stock. Please help me.

The latest lollipop too, please. Might as well try it if I have no luck with Kitkat. Or maybe is there a custom rom you'd recommend?

Also, I couldn't tell which vendor should I use either since mine isn't there. My continent/region isn't there either. Is it okay if I just use any Kitkat KDZ? My software version is V30b-GLOBAL-COM, if that helps.

Btw mine is the 32GB ver. I see some 16GB ver there. Is there any difference? Will the 32GB ver use some of its internal memory as internal sdcard? Can I install 16GB ver on mine? Like with Android One (sprout), 8GB ver of roms (sprout8) will use some of its internal memory as internal sdcard, while 4GB (sprout4) ver doesn't, but sprout4 roms are also usable with sprout8 phone.

Thanks :)
[G3 General] victor31:
I did everything according to your manual, the installation went wrong, only at the end when it came to 95% percent the installation failed. And now my LG G3 will not turn on. Is there a solution to restore the lg to life? Sorry for my English.
[G3 General] hyelton:
Remember anything past 80% it's done flashing. If it says "fail" that only means it didn't reboot quick enough it's almost will always say that. It didn't actually fail.

What's your model? What did you flash? If you had a D855 are you sure it was an actual D855 and not a referb with different parts?

If it was a sprint model did you attempt to downgrade?