yashsingh1/xdaforums huggingface dataset:
[G3 General] hyelton:
This guide is not directly for the G Pad 7.0..so this might apply to the 1% of the viewers of this thread, as this guide is aimed towards LG phones not tablets.(look at the thread title)

Also if the device was running latest firmware maybe it had antirollback? And in which would BRICK the device if attempting to downgrade. Also the guide here is for LG devices that have a CELLULAR modem in them. The V400 doesn't seem to have one (which may had been the problem?) which the methods here will work just fine for the G Pad with GSM as I've tested it myself.
[G3 General] bankheaddaniel:
My G Pad 7.0 has a SIM (Global Subscriber Module), and the thread I linked to uses the same program to restore G Pad 7.0 devices.
[G3 General] hyelton:
What firmware did you flash? That link you posted says G Pad 7 V400 which does not have a SIM card slot/supports cellular networks. In this case you may have flashed an incorrect firmware.
[G3 General] bankheaddaniel:
The G Pad 7.0 has a SIM card slot. I used the files that were mentioned in the post I linked.
[G3 General] hyelton:
If you used the links in that post that would explain why your tablet no longer works. The G Pad 7.0 V400 does NOT have a SIM card slot. That's what bricked your tablet not my guide. If yours has a sim slot then you don't have a G Pad 7.0 V400. What's your tablets exact model number?
[G3 General] bankheaddaniel:
On the post I referenced, it says V40020B - Lollipop 5.0.2
[G3 General] hyelton:
I looked at your Profile, Do you have the Sprint V400 G Pad 7.0?

After looking around the GSM/Cellular models are the Same model V400. But that link you linked to is for the V400 WiFi ONLY variant. NO sim slot which means you flashed the incorrect kdz. That would explain what happened to your device. My guide was not what bricked your device.
[G3 General] bankheaddaniel:
I do have the Sprint G Pad 7.00 (v400)...and it does have a SIM Card. Check out the links below for more info:

https://support.sprint.com/support/device/LG/LG_G_Padtrade_F70-dvc8850074prd?id16=lggpad70%20%7CAll&question_box=lggpad70%20%7CAll

https://support.sprint.com/support/...dF70:InstallOrReplaceTheSimCardLgGPadtradeF70

Now, I never said that your tutorial would brick devices like mine. I merely posted a warning [for other people with a device like mine] not to use the options listed in this thread [to avoid hard bricking their devices].
[G3 General] hyelton:
Yeah I understand, but what bricked your device was flashing the wrong firmware not the CDMA setting. That thread is for the WiFi only version of the same tablet. The warning here is be careful with the V400, as it seems majority of the firmware I have found are only for the WiFi only version. The OP of that thread should add that its for the WiFi only variant.

There are SEVERAL versions of the V400

AT&T V400

Sprint V400

V400 WiFi ONLY

And probably more than that.
[G3 General] bankheaddaniel:
Now I'm starting to understand some of the confusion here. There are 2 types of G Pad 7's -- the 7.0 [without a microSIM], and the 7.0 LTE [with a microSIM]. I have the LTE version.
[G3 General] hyelton:
Yeah, and very stupid on LG's and or Carriers part to not. Like LSV400 to know that it a sprint model etc as an example. Usually carriers will use a different scheme with model numbers.(Looks like Verizon did though) But looks like no matter what the carrier the model is still only V400 even for WiFi Only models. Depending on the reason why you wanted to flash the firmware I don't think there is even a Sprint firmware even available.
[G3 General] bankheaddaniel:
I'll let you know when I figure out how to make a KDZ file for the Sprint G Pad 7.0 LTE! Thanks again for all of your help!! :good:
[G3 General] hyelton:
Your very welcome, but you can't just make a KDZ file. KDZ files are officially from LG servers. And Sprint devices normally have .tot format files and usually non existent especially for a tablet.
[G3 General] bankheaddaniel:
I see. Well...is there a program that can extract\construct a TOT file from the stock ROM on a Sprint G Pad 7.0 LTE? :confused:
[G3 General] hyelton:
It's not an as simple process to even do. But you'd also need a working G Pad as well and it will most likely need to be rootable to pull the firmware. Having a working tot file wouldn't fix your other tablet though.
[G3 General] bankheaddaniel:
True...but I'd like to be prepared in case this issue comes up. I'm used to creating backups for PCs, and being able to restore them [whenever necessary]. I find it very frustrating that Android devices -- which use open-sourced software -- are locked down with annoying and cumbersome restrictions!!! Quite a few of these devices cost as much as [some current generation] Intel processors!!! :mad::mad:
[G3 General] tw10:
on the previous page 512, I asked for help regarding a factory reset....well I did everything accordingly and rebooted. My device ended up with LG updating and finally both notifications and all the buttons at the bottom were missing. Basically I couldn't get out of a page without rebooting.

Any attempts to update the software from within the phone were in vain:(

I managed to fix the problem by connecting to a PC and using the "Restore Upgrade Errors" menu in LG PC-Suite.

I have no idea why it upgraded in the first place and over wrote the rooted Boot but anyways...that was the fix to the missing notifications and buttons :)
[G3 General] L.C.M:
Can anyone help me?I use this method with lg g3 d858hk file to flash my lg g3 d858hk.But it stuck in factory reset status.Also,I can't access to download mode.
[G3 General] najmulbappy:
Im stuck in bootloop. I flash latest version TWRP then I cant access my recovery mode. Now I want to my phone alive and need all data too.

So now I don't want to lose my pictures and video which stuck in Internal SD. Can some one tell me how to copy all files from Internal SD?

Is that this method can remove Phone SD Data? Plz help me out..

Right now phone status is be like http://imgur.com/a/mfGy5
[G3 General] hyelton:
Best method is to flash it back to stock, but that will erase your data. Only hope Is to use the kdz method and choose upgrade.

But sadly never store anything on internal storage without backup, chances will be slim to get that back.
[G3 General] najmulbappy:
Is that possible to back TWRP in my current situation ?

I have ROM backup on my OTG drive but problem is I cant access TWRP recovery.
[G3 General] Solynth:
I have a D855 (Australia).

It is currently on CyanogenMod 14.1-20161223-NIGHTLY-d855.

Android version 7.1.1

I am just wondering if I can go back to stock from this?

I am not sure which firmware version to get since there are a few different firmwares for Australia.

Edit:

Managed to flash this rom: https://lg-firmwares.com/lg-d855k-firmwares/ thanks to thefireofwar for the link.
[G3 General] rahimali:
Downgrade from MM to KK

I have a European D855 which I accidentally upgraded to MM from LP when all I wanted to do was downgrade to KK.

Can I use the TOT method to directly downgrade from MM to KK ?

or

Should I downgrade first from MM to LP and then downgrade from LP to KK?
[G3 General] hyelton:
You can downgrade directly to KitKat. There's no point in downgrading to LP if your just going to downgrade again to KitKat. Make sure you use lgup.
[G3 General] Innieway:
Hi. First let me say thanks for your hard work and efforts, they are greatly appreciated.

I recently purchased a used G3 CDMA Verizon branded phone. I don't use Verizon, I use Straight Talk, and had the phone ported to ST. It worked just fine. (CDMA is the only option I can use where I live) But the previous owner was a Verizon customer and the phone had been updated to 54AA. I had seen where people were successfully downgrading from 49A and lower, but not above that. Then I ran across a thread a few days ago where someone had tested the 4AA update to see if it would downgrade, and had success. So I tried it.

I wouldn't say it all went smoothly, but it went. But now I'm experiencing a constant boot loop. I tried a factory hard reset as you suggested, but no help. I have discovered oddly enough that if I hold the volume up key as it boots up it will go ahead and boot into the system, and actually work. It seemed to be getting more stable, but would still eventually reboot. It did get to where I was able to release the volume up key, and at one point I had even managed to send texts for probably 5 minutes before it again rebooted. Unless I hold volume up it will NOT boot into the system, but boot loops on the LG logo. I tried another factory hard reset, and that made it get worse again.

Any ideas what it could be, or what I should try next? I haven't read through this entire thread, since it's over 500 pages LOL, but from what I did read I haven't seen anyone else have the same thing happen to them.

OH - I should mention I used a valid tot file, followed the procedure given in this thread for Verizon, had the Verizon drivers installed (which by all accounts I can tell installed fine - the computer showed my G3 in device manager and allowed me to follow the instructions precisely as described), replaced the dll with the MegaLock one in the LGUP flash tool (from post 2), used the dll file LGUP8974.dll as the one in the flash tool dll box (as per instructions for downgrading to 10b), and double checked the tot file MD5 checksum

I'm sure it's probably something simple I'm missing or not thinking about. My G3 WANTS to work, but some little something is keeping it from staying booted for longer than a few minutes - perhaps 7 - 10 if I'm lucky. I even tried reflashing. Same results. I also skipped through the initial set up since I didn't want to spend much time restoring anything until I can at least get it stable. My plan is to root and install a different ROM when I do get it stable. I just want to get rid of everything "Verizon". Wish I could use a GSM here. Rooted and installed a custom ROM for a friend on his AT&T G3 - total piece of cake! He loved it and so did I, but he lives an hour away where he can use GSM.

Thanks again for your hard work and efforts, and any suggestions you may have will be greatly appreciated!
[G3 General] hyelton:
Your very welcome :).

Normally reboot problems like that with the G3 is related to hardware or battery problems it's very common.

2 things I know to try is a new authentic battery or flash it back to latest firmware and see what happens.
[G3 General] Innieway:
Thanks for the quick reply.

The battery didn't seem to be having any issues prior to this. I did notice though that it seemed to be draining very quickly (according to the indicator on the status bar) after the downgrade. So I guess I'll try flashing a newer firmware. I think I'll stop short of the 4AA update, and try perhaps 47A. If that is successful then perhaps I can redowngrade.

My only objective is to obtain root, install TWRP, and go with a custom ROM. Can that be done from the 47A (Marshmallow)? My understanding is that I have to go down to 10b first to do it.
[G3 General] H_Four:
Hi OP.

Thanks for this, looks amazing.

Quick question, I have D855, currently running CM12.1, but I want out of it, I was thinking of using your method from post #3 to go from CM12.1 directly to MM, is that possible? Will it work? Or should I do something else first?
[G3 General] hyelton:
You would first need to flash a stock based rom that's based on you model number. A flashable stock rom first then use lgup. As CM or custom stock roms causes issues for detecting and flashing
[G3 General] H_Four:
Hey man, thanks a lot, you're quick. you don't happen to have any link to checked guides on flashing to stock from CM12.1 / or stock rom link for that matter do you?

EDIT: Or rather, to do so, can I use your "first" method? and if so, I should just get the D855 International KDZ from your server right?
[G3 General] hyelton:
Your welcome :). You'd flash a stock based rom the same way as you flashed CM through TWRP.

Sorry I don't have any specific links for that model. Look around under android development section here, and look for something that's stock based and not customised etc.

Every method will act the same when it comes to the device running CM or any highly customised rom.

Stick with LGUP.
[G3 General] uoweme6:
hi i need help. i think i bricked my phone. i tried the tot method and sometimes it is stuck on waiting on connection or after that it says cannot change to download mode which is really annoying. the first time i did it today it worked but gave me factory reset 2 blue screen so im trying every way i can right now but no luck. i even tried board dl nothing.
[G3 General] hyelton:
When you tried board_dl did it actually flash? As board_dl is the only solution for the blue 2 screen.
[G3 General] uoweme6:
lol i just did it finally omg thought it was done for. it was on waiting for connection for like 3 minutes i was impatient so i thought something was wrong thank god.. sorry for the bother lol
[G3 General] hyelton:
Glad you got it, Yeah when its stuck on waiting on connection, just unplug and replug the device :)
[G3 General] jabbeboy:
Can anyone provide a link to download LG UP ? The ones on the first page does not work.. ?
[G3 General] khnoizer:
But you said only d855 suggested to do that. Is it actually also safe for other models?
[G3 General] hyelton:
It's for Every model
[G3 General] hyelton:
What do you mean? Its working perfectly fine for me.
[G3 General] khnoizer:
Thank you very much. Anyway, I just finished flash using LGUP, haven't unplug my device, and now in download mode, it's showing progress bar with 1% progress. Is it normal? Should I wait till this reach 100%?
[G3 General] hyelton:
If it's finished flashing and booted into android it's done you can unplug your phone.

Or do you mean it's still flashing? Well it's normal to take up to 15 minutes to flash.
[G3 General] khnoizer:
I mean, the LGUP says it's finished flashing. And then, my phone in download mode looks like in attached image below, with 1% progress bar (it seems stuck).

Is it safe if I reboot now? :)
[G3 General] hyelton:
No clue. If lgup finished then you really have no other choice to reboot. But lgup is supposed to reboot the device for you.
[G3 General] khnoizer:
I removed and put back the battery on download mode to reboot. And when my phone reboots, it's back to download mode.

Also, it says "error, input not appropriate etc" when I tried to flash again. Just like below attachment. Any suggestions?
[G3 General] khnoizer:
I finally successfully flash it using tot method, with stock firmware on your server.

But now whenever I reboot, there are McAfee security asking for my McAfee pin, which I don't have yet. And it locked down my device.

I cannot go to download mode because of "killswitch" thing by also McAfee, so I can't flash other firmware.

Any solutions on this?
[G3 General] hyelton:
That would mean either you or the previous owner used mcafee. And will need that pin. They're might be a way around it but I've never done it myself. But it's not good.
[G3 General] khnoizer:
I might just read about that. Can you tell me why exactly it's not good? Is it related to emmc death risk?
[G3 General] hyelton:
No it's not good as you may never be able to use the device again unless you get the PIN number
[G3 General] khnoizer:
By luck, I was able to escape this situation. It stopped for a moment, and I was able to install kingroot (not the best thing, but the only solution), and end all this drama :D.

Thank you very much for the guides, and the very quick responses :laugh:. Now I can do anything I wanted to the phone (came in mm, so have to downgrade to be able do anything). I also contacted McAfee though the process is long, but if they willing to help in the end, that would be good for my G3 in the future. :laugh::laugh:
[G3 General] Benholder90:
Having trouble.. When the firmware is installed phone boots up and then usually when I get to the google account part in the setup it reboots and then its stuck in bootloop.. I took battery out and did factory reset with hardware buttons but just goes into bootloop again. Help please !
[G3 General] hyelton:
Yeah that was luck! I'm glad you got past that. Yeah it's dreadful lol.
[G3 General] hyelton:
Was it Doing something similar before flashing? What was the reason why you needed to go back to stock?

Normally bootlooping like this is a common problem with the G3 when it comes to a bad battery.
[G3 General] Benholder90:
Was thinking to sell it that's why back to stock. Have tried it loads of times now, a couple of times it worked but then when I rooted and installed SuperSU and then rebooted it went in bootloop, hopefully not battery ... Like j said it did work fine a couple times with no problem but the root and su messed it up.

I wasn't having any trouble with it til I went back to stock..
[G3 General] mathsz:
I'm on nexus 5x now. awesome, no unlock, no what the hey. just works. don't even need to compile roms now!

WOOOOT
[G3 General] klebersonas:
i am on fulmics 6.7 rom with modem v21c. i want go back to stock. do i have to flash modem v30 before going back to stock or it will change itself?
[G3 General] Benholder90:
Battery was fine before I went back to stock, is it possible that after flashing kdz so many times that its damaged something? Like battery as your saying? I've tried 3 different kdz firmware so far.. No luck

---------- Post added at 05:56 ---------- Previous post was at 05:55 ----------

Was thinking to sell it that's why back to stock. Have tried it loads of times now, a couple of times it worked but then when I rooted and installed SuperSU and then rebooted it went in bootloop, hopefully not battery ... Like j said it did work fine a couple times with no problem but the root and su messed it up.

I wasn't having any trouble with it til I went back to stock..
[G3 General] hyelton:
Are you flashing the correct firmware for your model right? And your sure it's not a referbished phone that could be a different model?

What option are you choosing in flash tool?
[G3 General] Benholder90:
Yes I'm flashing d855 kdz, like I said I have flashed it successfully a few times and it works but then after a short time it will shut down and then into bootloop. I got the phone brand new and never had any trouble like this, I even flashed v10 kk kdz a few days ago and had it running fine for a while until I rooted then I got bootloop. Now I can only flash v30 kdz for some reason , it flashes fine , boots up and when I start using it after a while it shuts down ... I'm leaving all the settings as they are in the flash tooll...
[G3 General] hyelton:
Definitely sounds like a hardware issue. Can't speak on when it's been rooted though as maybe some mods you made cause it. But when stock it's a hardware issue.
[G3 General] Benholder90:
Yes I was thinking that.. What could it be that would cause power problems? Battery? Have attached a video of what it does, don't know if you can see it.. I just tried again, flashed fine and started up and when I moved the phone it switched off and is now doing as in the video http://cloud.tapatalk.com/s/58d425b7ea5df/VID_20170323_185658.mp4
[G3 General] Benholder90:
Yes I was thinking that.. What could it be that would cause power problems? Battery? Have attached a video of what it does, don't know if you can see it.. I just tried again, flashed fine and started up and when I moved the phone it switched off and is now doing as in the video http://cloud.tapatalk.com/s/58d425b7ea5df/VID_20170323_185658.mp4

Basically once it shuts down by itself after that it just tries to boot up again and as soon as the lg logo comes up it reboots again, it doesn't even get to the part where it makes the sound and the led flashes you know what I mean?
[G3 General] hyelton:
Still sounds like either battery or other hardware issue then.
[G3 General] Benholder90:
Yes, what hardware issue could it be ? Any ideas?
[G3 General] hyelton:
Italy? I`ll have it up in an hour.
[G3 General] DelBoy:
It is a version for D855.

I am using it and it seems generic. Only bloatware are LG apps
[G3 General] JoaoVr:
IT`s = It is generic European verison? (sorry, not native english speaker)

I want to downgrade from V20a-EUR-XX
[G3 General] DelBoy:
Just flash it mate if you have D855
[G3 General] JoaoVr:
Many thanks, downloading =)
[G3 General] negativzeroe:
Anybody got just the kernel? In on LS990 if you do ☺
[G3 General] Neurom707:
Tried to flash back to stock on my D855 using the KitKat kdz for my model clicked start some weird boxes came up with ?? everywhere then the program crashed and my LG is on the Firmare update screen stuck on 6% Says COM3 in big green letters and in the bottom box it says :

U USER 59.2 AS9.1 B44 UHS

S U LG-D855 05.0 Hrev_10

D85520a

D85510a

EDIT : I started it again this time is says do you wish to cancel S/W update connection to the server failed but i didn't click OK and it started updating again and it rebooted at 100% into LG OS then rebooted again back into OS all seems fine now tho
[G3 General] Barsky:
iirc, what you are referring to with the htc one was the ability to change the SuperCID to 111111 or something like that, which turned it into the same as a developer model. Of crouse, this required an unlocked bootloader, which htc is very cooperative with and LG is not.
[G3 General] hyelton:
I have updated the OP with some new KDZ files :)
[G3 General] 1toadfacedfrump:
hyelton and all others, thank you for your help. As you probably know I've spent literally hours over the past 2 weeks and tried everything to get this to work, and tonight finally got it to work by firing up the LG Flash tool and starting the process while my phone was powered ON, not off. To my surprise and pleasure, the Flash Tool rebooted my phone and installed the stock att rom. I've seen others with the same problems I was having - PC Suite showing me to have current version when I knew I didn't, not fixing upgrade errors, and the Flash Tool giving me the dreaded Fail message - so maybe this could work for you as well. I see no problems with my phone, and should be ready for some Lollipop goodness now. Lollipop seems to work great on my Nexus 7 so far, hopefully it will work great on my G3 too. Good luck, and of course, I'm just trying to help, so not liable for any problems that arise.
[G3 General] ace2153:
Flashing tool

I have tried to use this tool this is what happening LGE ANDROID MTP DEVICE FAILED then LGE MOBILE USB MODEM FAILED so my driver won't install for me . Then when i run the LG program i get this LG USER TOOL STOPPED. any ideas would be greatly appreciated . THANKS:confused:
[G3 General] hyelton:
Is your phone in download mode? It shouldn't be trying to install mtp device if its in download mode.
[G3 General] ace2153:
Yes it's in download mode when i did this. Also not in download with the phone powered on drivers install fine. Just won't work in download mode. All i want to do is remove twrp. Recovery for a stock recovery. Is there a easier way? The phone is no longer rooted. Stupid guy swore this phone wasn't rooted and it was . i uninstall root using super user.
[G3 General] LuanBSP:
Wich one works for D855P 16GB for Brazil? I'm lost here.
[G3 General] Kashif Hashmi:
Which one is for Indian Version 32GB.

Sent from my LG-D855
[G3 General] hyelton:
The Indian kdz in the OP links.
[G3 General] glaudrem:
Hi [MENTION=2607037]hyelton[/MENTION] ,

Can I flash KDZ to return to stock from a CM Based lollipop ROM?

Thanks in advance
[G3 General] DelBoy:
Yes.

Just flash stock firmware (kdz file).
[G3 General] wily5150:
No luck using the KDZ method

I downloaded all the files needed to downgrade the firmware on my verizon g3, but I'm not seeing any KDZ files after unzipping the firmware file. Not sure what I'm doing wrong. Someone please help. Where are the kdz files for my us g3? I'm not seeing them in the list. I see the verizon g3, but it's a zip file. I'm getting aggravated here. I just want to downgrade, but it's not happening because I can't find the right file. Someone point me in the right direction please.
[G3 General] Zouheir-dz-25:
Lollipop offiical KDZ for g3 d855 16g

thanks so much for all the hard work

can any one help me find the OFFICIAL NON MODIFIED FIRMWARE file (KDZ) LOLLIPOP for my g3 d855 16g