yashsingh1/xdaforums huggingface dataset:
[AT&T LG G2] sobitthen:
Worked on a CM12 D800 reported as D801 G2

I had already loaded some of the files contained in this loader previously while using my G2, the script reported I had newer versions and to uninstall the newer ones, I just clicked ok, the script proceeded and installed the rest of the files, followed instructions, used the DLL file you added for phones with mismatched names and all seems fine.

The CM12 ROM was giving me ghost typing at the intersection of the 2 digitizers and phone was unusable, it has not recurred yet and hope phone's issues were resolved.

For those confused with the DLL files, just watch video, you get to select the DLL and the firmware in the utility.

Many thanks for creating this loader, an excellent tool for the G2 family here...:good:

Although the version it installed is in some tutorial mode and it will not slide screen and speaks to me for every tap on the screen and I cannot turn it off... Took a while managed to find and update phone hoping the talking phone would end, digitizer issue came back, at least phone is stock to send back...
[AT&T LG G2] heynando:
Hi, I just installed 20c on my phone, everything went OK, no bumps. I'm wondering tho why are the updates 20k 20u and 20y not being used? Is it because they lock the device in a way that the user can't go back to 10d? I hate the AT&T bloatware, it's such nonsense.

edit: a bit of research and found some answers.

20k enables Google Wallet Tap to Pay basically and that is it.

20u brings Knock Code

20y APN update (it changed the APN to nxtgenphone), updating the LG Music Player app (v4.5.24), LG G Watch compatibility and the last is the Google Security Patch that will make your device more secure while blocking any root attempt on the AT&T LG G2.

nothing major IMHO, 20c is still good to go then. Thinking of going with CM 4 now.
[AT&T LG G2] SuperSport:
The original reason those were not added was because the TOT files were not available. I haven't looked lately, so not really sure if they are there. If they are, and if anyone wants them, I'd be happy to create the installer for the version wanted. Please give a link to the TOT and I'll take it from there.
[AT&T LG G2] heynando:
you're right, I couldn't find them, which leads me to believe that they are still not available. Thank you for the attention anyways Super.
[AT&T LG G2] brianmel:
Hi. I have a d80010o that came with the stock ROM and the only thing I wanna do is upgrade the android version to kk.

I don't understand which of the downloads I should choose.

I've downloaded the 4.4.2 d80020c file.

I'm root.

Flashing the phone using your method updates the android without losing any data?

PD: as you see, my questions are basic :p my previous phone was a Nokia c3, and before I've used a (fabulous) Nokia 1100 . and all the android world is still new top me.
[AT&T LG G2] heynando:
Flashing the phone using your method updates the android without losing any data? No it loses data because the files that are in the OP are complete FULL roms not little updates. It will wipe the internal storage. That's why the title is Kitkat the easy way, because it is easy, there is the hard way, which is the way that you want.

From what I understand, and that is very little, to NOT lose data you will need to update from FOTAs, you will lose root but it can be easily regained after with ioroot or Towelroot or Stumproot. If the FOTA has not reached you, you will have to reach it, that is, manually downloading (it's very hard to find these FOTAs online) the updates, then insert them into the

correct

FOTA folder so that the phone can proceed with the installation.

You will also have to follow the correct firmware sequence, otherwise it won't work, you can't jump from one to another. 80010c -> 80010o -> 80010q -> 80020c -> 80020k -> 80020u -> 80020y

here's the 20k and 20u = http://xdaforums.com/showpost.php?p=55251365&postcount=20
[AT&T LG G2] brianmel:
So if I just flash my phone using superSport's utility (assuming I will lost all the data "formatting" the whole memory) I will install the 20c version without any problems (I guess...)

I've tried to search all the OTA updates , but its not only very hard to find them, its also very complicated cos you have to edit many files (and I think the % to brick the phone will be much larger).
[AT&T LG G2] hugodefcon:
will this remove and replace all of my partitions?

i am currently on grola rom and would like to go back to stock lg.
[AT&T LG G2] SuperSport:
Yes, it will put it back to stock, including partitions.
[AT&T LG G2] hugodefcon:
damn!!!!

awesome reply bro, fastest reply i have ever gotten.

i have used this before, great work by the way.

just one question.

grola rom is a stock 5.0 port from the koren model.

i just need to flash a d800 rom.

even though it does not boot up?

grola rom is a complete mess with people bricking their devices.

you should look around just see what im talking about

ill start flash, ill post how it turned out
[AT&T LG G2] SuperSport:
Correct. As long as you can enter download mode, you should be good.
[AT&T LG G2] hugodefcon:
like i said i have used this once, and once again it worked flawlessly.

i am now back in stock lg and out of that rom that bricked a lot of peoples devices.

thanks bro this method works awesome.
[AT&T LG G2] SuperSport:
Glad to hear it worked again, thank you for the input.
[AT&T LG G2] Lanchon:
hi

is there any way to flash D80020y? thanks!
[AT&T LG G2] SuperSport:
Not that I'm aware of, but there is a way to use the OTA updates and force them to run, even if you are not on ATT, or using an ATT SIM.

http://xdaforums.com/att-g2/general/links-manually-forcing-ota-20c-to-20u-t2828874

I've personally used this method, and it works.
[AT&T LG G2] Reddog80p:
Trying to get my d800 att to boot. I was stuck in fastboot without being able to get into download mode. I erased/flashed img files via fastboot and was able to get download mode working. Now trying to run LG flash tool I'm stuck. Any help appreciated.
[AT&T LG G2] Swetnes:
Dude just look at the bottom of the 1st post....a little reading goes a long way. [emoji15]

Sent from my LG-D800
[AT&T LG G2] R3ISEN:
Thank you very much, i accidentally removed a few system apps and i needed to flash my phone again. using your flashing method my phone its working like a charm! :D
[AT&T LG G2] jayb222:
Got the same message on my g2 d800 at&t version after recovering from a bad korean based cloudyg2 3.0 After the flash it's saying my phone is a d801 tmo. It's really a d800. I did read the entire op post and used the .dll provided for mismatched version error. Does anyone have a fix? Please and thank you in advance.
[AT&T LG G2] SuperSport:
I also hope someone has a good answer for this. I've got a friends D805 here that has that same issue. From what I've read, it will take a JTAG to fix it. I'm hoping not, so if you know of anything else, please let us know.
[AT&T LG G2] axeembhatty:
Lollipop.

awesome stuff. Now what about the lollipop update that is rolling out to at&t G2?:)
[AT&T LG G2] SuperSport:
I have not seen the TOT file yet. The Over the Air update is going out now, have you checked for it, or are you not able to access it in your location?
[AT&T LG G2] igorend:
Thanks!

Hi! Amazing stuff! This is the only thing, that restored my phone to work... I need just to restore IMEI...
[AT&T LG G2] vween:
So, I'm curious. Why do these files have to be exe files? What's being installed behind the scenes?

EDIT: Ok, it's installing the LGFlashTool. Ugh, I don't NEED that. I simply need the tot file. I already have the flasher installed. UGH. Oh, well.
[AT&T LG G2] SuperSport:
They are this way to make things simple. Also, the download size is reduced this way.

Nothing nefarious going on behind the scenes.
[AT&T LG G2] carlson03:
Thank you for this! I will give it a try....I rooted my phone, tried to run the lollipop update, and no go, said couldn't with root...so unrooted, ran again, still didn't go, stumproot won't let me re-root kitkat, so needed a way to factory reset my AT&T G2....looks like this should do it! :D
[AT&T LG G2] ericshmerick:
Got a new unlocked D800 from the qualitycellz 17,000+ $189 fire sale.

I have T-Mobile and want wifi calling.

Can I follow the OP, flash the T-Mobile firmware (partitions and all) effectively converting this to a T-Mo version? Yes, I realize the D800 doesn't have the T-Mobile AWS bands that the D801 does, but I just need wifi calling. Out and about coverage would be the same anyhow regardless of the firmware.

So, will it work?
[AT&T LG G2] hugodefcon:
Wouldnt that brick your phone?

There is a rom somewhere around here which ia a t-mobile stock rom forked to work with the d800.

I think that is the only way to get t-mobile wifi calling
[AT&T LG G2] SuperSport:
I would not suggest this. I would go with the suggestion from [MENTION=5047923]hugodefcon[/MENTION] above.
[AT&T LG G2] carlson03:
Thanks for this guide! Was perfect, was able to get back to stock non-rooted ROM!
[AT&T LG G2] Wezurii4694:
EDIT: Never mind. I was just not doing something correctly.

I see other people with my problem, but it's still not working after I try the solutions you posted back, so I need some help.

I've gone through everything until the Download Mode part, because my phone isn't showing up in the Flash tool, and the drivers aren't installing. I've tried restarting my computer and putting it back into download mode, but that doesn't work, either. Please help. Thanks in advance!
[AT&T LG G2] SuperSport:
So, it's working now? I was just going to suggest manually installing the drivers, but saw your edit.
[AT&T LG G2] Wezurii4694:
Yep. I was doing it on a Windows 8 computer, so I got mixed up on some of the things, I think. It's all set now, though, and working great. Thank you for the tutorial.
[AT&T LG G2] Tikiflame:
:D

PASS ! 367 sec.

YOU GUYS ARE AWESOME. :good:

Thanx, that was a Great Install Package !
[AT&T LG G2] samalamadumalama:
should i downgrade to d80020c?

i am on d80020y, i tried to root using 'brute force' on stumproot. it worked, but a couple moments later, i inexplicably lost root access. however, stump root still says 'device rooted'.

i am thinking about downgrading to 20c to get root - so that i can get a custom recovery and then flash a cm12 nightly. any help/suggestions?
[AT&T LG G2] Fraudiay:
Lollipop to kitkat

Hi, I have AT&T LG G2 Unlock..

And

I have manually update my AT&T LG G2 form. Kit Kat 4.4.2 D80020y stock to Lollipop 5.0.2

D80030f stock... L is kinda slow I think... and now I want to go back on 4.4.2 stock but be for I do that I wanna make sure every thing that I have in my mind...I never done flashing this is my first..

1. If I flash my AT&T g2 with ur guide will I loss "IMEI" and "Unlock" ..?I'm not from U.S so Unlock is big thing for me..

2. how can I get D80020y back..?
[AT&T LG G2] SuperSport:
You will not loose Carrier Unlock if that's what you mean. That stays even when you flash ROMs, or Stock Firmware.

To go back to 20y, simply flash this stock 20c then manually update again to 20y. I'm sorry I don't have a 20y flashable Firmware.

Remember, this will completely wipe your phone, so be sure to backup. It will also remove Root or any Custom Recovery.
[AT&T LG G2] Fraudiay:
Ok.. Thanks

I'm going to flash my G2...
[AT&T LG G2] samalamadumalama:
hi supersport,

ive just bought the lg g2 att variant (d800 - 32gb model) and it came with the 20y firmware. i had some rooting issues with it, and now i want to flash stock 20c on it, and root that. small question: it's safe to jump backwards to 20c, right? i know it's probably a stupid question, but i just wanted to be sure. Also, in the link you give (in that huge guide - thank you SO MUCH for that, btw) for the 20c download ('SuperSport & bigfau LG G2 D800 Flash Stock KitKat D80020c.exe'), is it for the 32gb version or 16 version?

last thing, real quick: if all goes according to plan, and i end up with a rooted 20c, do you think I could install a custom recovery like twrp, and flash a cm12 nightly? or should I manually upgrade to stock lollipop? and if the latter, could i go directly from 20c to 30f?

i hate to burden with my noob questions like this, but you are clearly an expert on the g2, so i defer to you judgment. any help would be much appreciated!
[AT&T LG G2] khalil651:
Help needed??

Is it necessary to have D80010o software on your G2 to update to D80020c I have D80010q software on my G2. Will it work for me? I have not rooted and dont have a custom recovery.
[AT&T LG G2] sdc177:
So this downgrade method still works on a stock Lollipop D80030f phone? My goal is to install CM12.
[AT&T LG G2] SuperSport:
You can have any firmware on it and this will still work. It even works with ROMs and Custom Recoveries installed. Keep in mind, it WILL erase everything on your phone, so BackUp first.

Yes. You can install this and Root, then Custom Recovery, then CM12.
[AT&T LG G2] SuperSport:
It IS safe to jump backwards. (There are no stupid questions around here, not worth bricking your new phone. ;))

It is for the 32 Gig ATT Version.

I Personally prefer the Stock Firmware versions over ROMs most of the time, but CM12 is a really nice ROM. It will come down to personal preference. You can always come back and start over if you don't like the result. I believe there is a new download to go directly from 20c to 30f. Check the Manual Update thread, I think I saw it there. If not, then do incremental updates and you'll end up there.
[AT&T LG G2] khalil651:
Gonna flash after phone charges. SuperSport can you give me the link for software d80020y . So after i install d80020c i can install that. Thanks by the way7. :D
[AT&T LG G2] samalamadumalama:
hi again,

so i flashed 20c using your guide and massive exe file, and it was an absolute breeze. thank you so much, man. much love. EDIT: i just wanted to stress that i dont mean that lightly. i have so far had only terrible experiences (as a n00b) on xda, and to have someone make such an easy, self-contained guide.. honestly i cant tell you how grateful i am!!

i decided i should go for stock 30f instead of cm12. so now to go from here (20c) to 30f, i would have to first get to 20y, right? not that i have any problem with that, its just that the only guide here (http://xdaforums.com/att-g2/general/links-manually-forcing-ota-20c-to-20u-t2828874) is very daunting, and i really have no idea how to work with adb...

any assistance, or just a nudge in the right direction will do! thanks again supersport for being a super sport (lmao, terrible i know)!

edit: i decided, while i wait how to figure out how to get to stock lollipop, ill flash a custom recovery (twrp) and the latest cm12 nightly,

ill keep anyone reading this posted on stability
[AT&T LG G2] SuperSport:
Very kind words from you, Thank You very much!

I will need to read about this a little bit before I guide you. I don't own an LG G2 any longer, so I don't have a way to walk through it step by step to make a tutorial. I don't want to make a mistake and give you problems. It might also be possible to do a TeamViewer session to get through it safely.

I wish I could borrow a D800 for a few days to make a video and written tutorial. If anyone has one for CHEAP, let me know. I might be interested in having one for this sort of thing.
[AT&T LG G2] Ace42:
Your guide helped me flash both 10o & 20c, but it's too bad that restoring my G2 to stock didn't fix the reboot & overheating issues. My G2 reboots randomly & heats-up to over 70(C) degrees even while idle (causing insane battery drain too). I assumed that flashing stock images would fix the problems I had while on custom ROMs, so it looks like my G2 is defective hardware wise & I need a new phone.
[AT&T LG G2] SuperSport:
That is unfortunate. Sometimes, flashing back to stock will indeed fix those problems. I'm now using an S6 Edge and it had insane battery usage, lagging, and ran HOT out of the box. After flashing the Stock Firmware, it runs like a dream. You might try a factory reset a couple times, and clear Cache in Recovery just to be sure. It does sound like hardware though.
[AT&T LG G2] Ace42:
It's definitely hardware because it happens on every ROM regardless of modem, lollipop/kk, or bootloader combo. At first boot it shows the LG splash, reboots again, then it shows the LG splash once again as it attempts to boot. Sometimes the sequence will loop forever until I hold the power button. These issues started not too long after the G4's announcement, so this might be a sign.
[AT&T LG G2] SuperSport:
Hehe, yep, built in obsolescence.

Does it do the same thing when plugged into power? If not, maybe bad battery.
[AT&T LG G2] smilesintears77:
+1. I'm in the same boat. I have been asking around but no response at all...I also thank supersport and will wait for advices.
[AT&T LG G2] Ace42:
It happens with A/C and USB charging. It doesn't happen consistently, so I'm going to trade it in to T-Mobile & pray it stabilizes long enough for me to buy a pre owned G2 from them. :fingers-crossed:
[AT&T LG G2] Asttor:
Hello,

my D800 is rooted, has recovery (TWRP), and is running KitKat AICP (Android Ice Cold Project) ROM. It is not bad. Still, I think I still prefer the KitKat version that I had from AT&T, once you remove all those useless apps that they include with it.

The tutorial in this thread is wonderfully clear, and I have done everything except the last step that flashes the 20c ROM. I did a backup of the AICP ROM and made a copy outside the phone.

If something goes wrong when I flash the 20c into my phone (to go back to stock), will it be relatively easy to flash again the AICP ROM that I backed up?

I understand that there are no guaranties, but in principle, is there a way to take the phone back to a situation where I can flash the AICP ROM?

Thanks
[AT&T LG G2] SuperSport:
You would then need to re-root and install custom recovery to flash your custom ROM again.
[AT&T LG G2] GordoPanocho:
PORTS not properly displayed; can't change

So I'm a novice to all of this. My basic, un-rooted (?) phone just recently updated to Lollipop 5.0.2. Well, among other issues I'm experiencing the sudden reboots, difficulty turning it back on, etc. After a factory reset didn't fix anything, I decided to learn how to downgrade the OS ... and here I am. Your software seemed to install properly but I'm not seeing the PORTS listing such that I can edit it and proceed with the process. How do I get to "LGE AndroidNet USB Serial Port (COM4)"? FYI, I'm running Windows 7 Professional (SP1, 32-bit OS). I'm attaching a screenshot that may or may not help.
[AT&T LG G2] SuperSport:
It looks like the driver installation might not have completed properly. Try running the driver portion of the installer again and see if it works.
[AT&T LG G2] GordoPanocho:
Forgot to mention that after the first time that I couldn't change the PORT, I rebooted my laptop. When it didn't work the 2nd time, I reinstalled all of your software. So I'm not sure how to do the drivers again.
[AT&T LG G2] SuperSport:
Sounds like you did the software part of the install. Not sure why the drivers didn't install correctly.

Try going to device manager and update drivers on those items. Tell it you have disk, and browse to the LG Drivers directory. See if that helps them install.

I'm sorry I'm not at my computer right now. I just had surgery 3 days ago and have been bed ridden since, otherwise, I'd make you a quick video showing how to do this. Hoping to be able to get up later today or tomorrow.
[AT&T LG G2] danieldp1990:
can you share the files you used to update to lollipop?
[AT&T LG G2] GordoPanocho:
I was unable locate/direct the Device Manager to update the drivers from my computer. So, I had the idea to check the LG web site. I was then able to download current drivers. Note, the driver install didn't work the first time while my phone was in 'Download Mode.' But, it did work when the phone was turned on and plugged in via USB ... at which point I re-downloaded the drivers from the web site. Once that all worked, my only Port option said "LGE Mobile USB Serial Port (COM4)." I was then able to change it to COM41 and proceed with the OS downgrade. Yeah! Hopefully this will correct all of the issues I've been having. Regardless, I was able to complete the downgrade process via your instructions and forum assistance. That's one more deposit in your karma bank. Thanks again!
[AT&T LG G2] Fraudiay:
Lollipop for d800

you can get it from

webtrickz . com /how-to-update-lg-g2-to-official-lollipop-os/
[AT&T LG G2] SuperSport:
Great link to an easy to follow tutorial.
[AT&T LG G2] Nomigull:
rom issue

hay bro very nice work but tell me one thing. what is the procedure to on the rom on my lg g2 d800. i m a new user so please tell me briefly.
[AT&T LG G2] SuperSport:
Download the 20c installer and follow the video to use it.
[AT&T LG G2] txv0:
model information check fail.

Im trying this out on my D800 which currently has CloudyG3 2.2 on it and I'm getting "model information check fail". Do i need to flash a different ROM first or is it something else? There was an error earlier with one of the drivers failing to install. But when I replugged it in, it said it did install. Not sure if this may have screwed things up. I think it was "LGE AndroidNet USB Modem". Thanks for the help.

EDIT: got it to work, I had to switch USB ports and it got things going...not sure how that works but it did.
[AT&T LG G2] SuperSport:
Sorry I didn't get back earlier, I haven't been myself lately. Glad it's working, and thank you for the update. I'm sure that will help others having the same issue.
[AT&T LG G2] Retep117:
Download Failing

Long story short, I tried to return my LG G2 to stock using the traditional LG Flash Tool and a .tot file method and got my phone stuck in a boot loop, really hoping that your tutorial fixes it. I keep trying to get the Jellybean files and the web page always crashes. Is this a common problem or is it just me for some reason? Sorry if my writing is bad at any point, I too just had surgery and currently only have one hand.
[AT&T LG G2] SuperSport:
I'm so sorry to hear about your surgery. I really feel for you. Your typing was spot on.

Have you tried a hard reset after the process? I believe that fixes Some of the boitloop issues.

Download problems can happen with Internet Explorer. If you're not already, try Chrome or Firefox.
[AT&T LG G2] Retep117:
Yeah, unfortunately I've tried a hard reset, unless there is another way besides holding down volume down and power at start up? I was using Chrome, that's why I thought it was a little strange, but I'll keep trying to get it, really don't want to lose this phone
[AT&T LG G2] SuperSport:
When you tried hard reset, were you able to get into recovery so you could select factory reset?
[AT&T LG G2] Retep117:
Yeah, this is where I think the problems begin. I wasn't planning on rooting or anything yet, just returning to stock, so I don't have a custom recovery installed. I just get the white 'would you like to factory reset' screen and from there can perform factory reset.
[AT&T LG G2] SuperSport:
That's actually the one I was referring to. At this point, using the Stock Recovery to Factory Reset is what occasionally works.

Have you gotten any further yet? There is also a program called Mega Links Downloader that you can use. It works pretty well. Here is the link for that: http://sourceforge.net/projects/megalinkdownloader/ Just copy and paste the links into that program and start.
[AT&T LG G2] Retep117:
So I did manage to get further, got through the whole process but unfortunately I have the same problems: random restarts, wifi doesn't work, power button turns it off but not on, random error messages, things I'm pretty used to. I'm going to try flashing KK now to see if that might work, fingers crossed.

I was wondering, do you have to wipe an old flash before putting on a new one, and if so how would I go about doing that?
[AT&T LG G2] SuperSport:
When using the LG FlashTool, there is no need to clear first. It overwrites everything. How are you going to flash KitKat? Custom ROM, or is the TOT file out now?