yashsingh1/xdaforums huggingface dataset:
[G4 General] Desarth:
Hey, thanks for the guide.. Will give it a try immediately. Was waiting for this for a long time.

Can we use this method to flash LineageOS Nougat or Oreo as well or does it only work with stock LG firmware?
[G4 General] ling751am:
This is a fully stock ROM, downgrade to 5.1 no need to unlock the bootloader, we are using the bootloader's bug to flash modified system.img, and then, upgrade to nougat, a fully stock Nougat ROM, you can't root, and the bootloader still locked.

But I don't know what if we flash this, the phone still in warranty or not.

And here, in Taiwan, Taiwan LG is selling LG G6 now, they don't sell G4, our warranty only 1 yr.

This method only works with stock ROM, if you try to flash a third-party ROM, you'll stuck at LG Logo cuz the bootloader don't know what the fxxk is this system, See "Known Issues" Q7 :)
[G4 General] javikore:
After updating to the V29a lift LG backup stop working notifications restore 2 times the two failed, I had to perform wipe and returned to normal.

Do we have root to delete apps that I do not use LG?
[G4 General] ling751am:
Do you perform a fully factory reset after upgraded to Nougat? I think you must read my guide again :)

Do we have root? Plz see "Known Issues" Q6, ty
[G4 General] sbuja:
when i run ports.bat i get this:

\Device\LGANDNETMDM0 REG_SZ COM4

\Device\LGANDNETDIAG1 REG_SZ COM3

so i copy the code and instead of COM# i put COM3. I then see ENTER, Leave then #, and then i copy the next code and press enter. The # appears and I remove the battery and reboot. Then there is no Supersu. What am i doing wrong?
[G4 General] shuryak:
LG Taiwan H815 v10F KDZ link expired. Can u upload again?

Nevermind... i made a yandex account.
[G4 General] Engelm:
The com port was the one you need.

Can you copy the full input/output and paste it here?

Or a screenshot
[G4 General] sbuja:
Thank you. The problem was i had to unpack the 7z file, then unpack the .tar file to get the the .img file. Now it is sorted, my phone is running Android 7.
[G4 General] Lonelylighttt:
I have lg g4 h815tr and i want to try this. Its ok?

LG-H815 cihazımdan Tapatalk kullanılarak gönderildi
[G4 General] ling751am:
Plz upload your cmd window screenshot here

You got it.

Don't do that if you don't have any confidence

But you can try this guide if you find a 5.1 version KDZ for your H815TR.

If you bricked your phone, try to flash back to stock KDZ

Good luck!
[G4 General] Lonelylighttt:
The kdz file in this threath is work for me? Is it work for me ?

LG-H815 cihazımdan Tapatalk kullanılarak gönderildi
[G4 General] Sasimanto:
I have added screenshots of my software info.i got the phone as a gift and it was rooted when i got it . i think it's refurbished phone. Will this method work for me?
[G4 General] ling751am:
Is H815=H815TR? I don't get it :)

Don't try to upgrade your phone with this guide, never.

I think you better stay at Marshmallow :)

Plz upload "Hardware Info" screenshot here, not "Software Info"

Don't forget to remove your MAC Address from screenshot
[G4 General] Sasimanto:
Here
[G4 General] tylerberk:
Working Perfect.. Thanx body.
[G4 General] ling751am:
You can try this guide :)
[G4 General] Sasimanto:
I have to just flash the 7.0 update with flashfire right? Or have to do all the steps?
[G4 General] ling751am:
Have you unlocked the bootloader already? If yes, try flash TWRP first, and follow that Nougat rom thread

If no, perform a factory reset, check the supersu still alive, run flashfire, flash nougat.

BUT, CHECK YOUR ANTI-ROLLBACK VERSION FIRST!
[G4 General] Sasimanto:
Ok thank you
[G4 General] nortish:
Hows the battery life and smoothness on Nougat with the G4? I have one as a backup to my Honor 8 and thinking of upgrading it. Is it worth or does it run better on marshmallow?
[G4 General] CygnusBlack:
I'll follow your guide to update a 815P. Wish me luck :p
[G4 General] CygnusBlack:
Success!

Thanks.

For the ones constantly having Google Play Services errors while trying the procedure, install the latest APK: https://google-play-services.br.uptodown.com/android

LG G4 H815P (Brazil).

---------- Post added at 11:45 PM ---------- Previous post was at 11:17 PM ----------

One more thing.

I get a "Current version is not available for user. Can't find matched cust for NTCODE = [FFFFFF,34]" error at boot up.

Since it's fixable only by rooting the device (impossible for locked users) and editing the cust_path_mapping.cfg file, I ask you if there is some kind of workaround or a pre-modified ROM to correct this issue. Thanks.
[G4 General] Tinchos88:
Hello friend! One question:

I have a H815 with locked booloader and its SVC is 0, but it only works with the big core locked. .. how can I do? Please help me. Thank you!
[G4 General] ling751am:
See Q5, and for me, nougat is better than marshmallow.

Good luck.

If you are done, reply to this thread plz

See Q7

What SVC? SVC Menu is 0? I don't get it
[G4 General] jotaincubus:
Work fine in H815p

Thanks for your tutorial ....

I had a problem with the third step
[G4 General] pavlosargyris:
Thank's for the tutorial!

Just updated to Nougat.

In LGUP by choosing UPGRADE it resulted in error so i used Refurbish and problem solved.

Also , I too received an error "Current version is not available for user. Can't find matched cust for NTCODE" but it's ok.
[G4 General] kunalnarsey:
Thx very handy guide and able to upgrade successfully. Is there anyway to get Android Pay working?
[G4 General] Lonelylighttt:
Definitely not same [emoji6]

LG-H815 cihazımdan Tapatalk kullanılarak gönderildi
[G4 General] ling751am:
Yeah, I know but that won't effect anything, the phone still works fine

See Q14 :)
[G4 General] maciek0097:
Hi, I have a problem with my quote/ qouete
[G4 General] emas20cool:
problem

Hi, I have a problem with my LG G4 H815. I I got stuck on point 10. When the phone reboot again, you should now see Android is Upgrading.

Yes android is Upgraiding and i have bootloop. I tried full factory reset but does not help. Download mode didn't work. Pleas help me.
[G4 General] cawdavid:
no es bueno

Everything went fine, got android 7 working, as you said android pay wasn't working. Tried running the kdz again and NOPE, it installed to 24% gave an error code 0x2000. Had to pull the battery, and now it keeps booting to firmware update.

crisis over - refurb using H81520p_00_0314.kdz
[G4 General] SmiteBott:
Firmware download

Hi,

I have been having issues downloading the firmware from this site, is there any other link?
[G4 General] mario323:
So if i understand corectly, there is no root injection in the firmware but at the same time there is enough root files that makes the rom unable to use SafeNet apps, am i correct?
[G4 General] SmiteBott:
"No Command"

Thank you so much! it worked!

How can I root 7.0 without unlocking bootloader?
[G4 General] Engelm:
Read the FAQ.

You can't.
[G4 General] htr5:
Thanks for making this. Will a upgrade from bootloader unlock still trigger safetynet?
[G4 General] ling751am:
So what's your problem?

try this guide again, and remember to check that "Known Issues" list.

Q10 said that, but this also worked if you want to downgrade straightly to V20
[G4 General] ling751am:
nah

Yes, and there's no way to clean those files, very very...sad.

nah, and by the way, you didn't check that "Known Issues" list b4 asking any question :(

Ty

If your bootloader is UNLOCK-ABLE, flash TWRP and make a clean install of Nougat

That's the only way to get your Android Pay work
[G4 General] Golddigger99:
I actually did Step 6. but now the phone is stuck on bootloop. I also did a hardware factory reset but it is still in loop. Any idea?

Edit: Well did everything from start and now it worked. I dont know what happened but seems to be fine by now.
[G4 General] bazaleem818:
work great thx

lg g4 h815 locked usa
[G4 General] ercanacar:
Thank you, but i want to ROOT my phone again. Can i do this?
[G4 General] Engelm:
Yes, Just downgrade to LP and root your phone.

For question related to this rom read the FAQ
[G4 General] harysviewty:
Can we install it on h810 h811 locked rooted?
[G4 General] renanff:
H815P working fine

So, I just finished upgrading the H815P variant using this method and it worked fine!

The Lollipop version I used was H815P10g_00, cause that's the one I already had.

And I used this method to root (which uses this "ADB folder"; it might be the same OP used, I don't know, I didn't check) because that's the method I knew and used before.

On my first attempt with Flashfire, the screen just went black for about 5 minutes... I took the battery out, restarted the phone, tried again and that time it worked fine!

The last reboot took a really long time... almost 10 minutes of LG logo blinking... but it was alive in the end.

Now I'm gonna check the stability on daily use, battery and everything, but the guide worked perfectly to upgrade this variant to Nougat.

Awesome! Thanks!
[G4 General] alejobog:
has repeated the process three times and at the end * step 10 * stays in the logo, I read Q12 and Q13, but it does not work

H815P

---------- Post added at 08:09 AM ---------- Previous post was at 08:07 AM ----------

in the flasfire it gets failed (-1)?
[G4 General] renanff:
Not really. The screen just went black. I waited for it to reboot, but it took a really long time... I held the power button, no response... So I took the battery out, reinserted it and then it worked.

I didn't see any warning on the screen about anything failing... When it worked, it said "Installing Nougat" for quite a while too, before it finished.

If it's failing, maybe you could try copying the zip again to the phone, cause something might have gone wrong the first time.

Step 10 takes a LOOONNGGG time... The logo was seriously blinking for about 10mins or more before the "Android is upgrading" showed up.
[G4 General] nisnis39:
Thank you for the tutorial =)

It seem that after the update, the phone don't use 4g+ (LTE advanced) anymore but only 4g, do you have the same problem?
[G4 General] alejobog:
Solved.

Download the LG Poland Official H815 v29A firmware zip again. and worked perfectly
[G4 General] frankie76:
works for H815AR

This Method works for H815AR. I just do it, and everything seems ok. The only error i got, is when it starts. But i cant see nothing more than that.

Thanks!
[G4 General] Derrick21:
Works well. Overall smoother experience than in marshmallow but camera app is quite laggy compared to marshmallow.
[G4 General] nisnis39:
Am I the only one having trouble with 4g+?
[G4 General] KriegerBread:
If mentioned error is "country-code mismartch" don`t worry. It doesn`t cause issues
[G4 General] VirtualBit:
works great on H815L [ISRAEL]

Thanks for sharing this awesome way to upgrade.

and screw you LG
[G4 General] kalanakodicara:
your device is corrupted and cannot not be trusted will not boot messege after lg logo and cant enter into download mode. Locked boot loader. Pls help!
[G4 General] tulen_kobi:
flash again the v20p kdz and try again. Maybe you can flash directly the v10X kdz. Some of your partitions is not in the orignal state so the device will not boot.
[G4 General] kalanakodicara:
Unfortunately download mode doesnt work.

Sorry for bothering im new here
[G4 General] tulen_kobi:
Nothing happens when you hold volume up button and attaching to the PC? The phone need to turned off before by removing battery.
[G4 General] guillermo11bq:
Hi! I read Q14 & Q15 and I'm just wondering... if there's still root files on the system partition, wouldn't it be possible to flash the stock system.bin through fastboot in order to pass the SafetyNet?
[G4 General] ling751am:
I'll punch your face : (

Go try it, I don't know what will happen with your phone : )

Yeah, that ADB Folder have already contained Send_Command.exe

All we need is that .exe

nah, I have 4G+ with my G4, must be that baseband isn't compatible with your country :L

You didn't download that file completely lol

I don't understand what you say, what is "I can't see nothing more than that when it starts"?

Are you mean, you can't see boot animation during phone booting?

Try to clear Camera app's data and cache
[G4 General] ling751am:
Screw you LG and and give LG our beautiful fingers : )

Wipe and try to flash H81520 KDZ again

Yeah.

take out the battery and hold vol up, connect to pc again

IDK but you can try, if you solve this, don't forget to share it here : )

EDIT: I've tried that, fastboot response me "device is locked. Cannot erase"

Anyway, we need unlock that bootloader, screw you LG
[G4 General] frankie76:
H815AR

Sorry for my poor english.

I was trying to say, i dont have any problem with the upgrade. The only problem i have is the warning windows when the phone starts that says:

"Current Version is not available for user. Can't find cust for NTCODE=[33403,FF}"

But i close that window, and everithing works fine.

Thanks!

PS: If there any way that you know, to remove that message, i will be very pleased.

PS2: I hope you can undestand this message.. :P
[G4 General] nisnis39:
You mean that the 4g band are coded in the firmware?, that's strange, anyway i got back to the original firmware MM and got my 4g+ back, too bad nougat was cool.
[G4 General] benminja:
0x2000

I'm gettin an 0x2000 invalid command response error on step 3 (at 7%, "boot"). Used Uppercut. It's an H815.X I'm getting the same error with MM and LP KDZs. Can you help me please? Beginner here

Edit: Worked with these dlls https://xdaforums.com/showpost.php?p=73493577&postcount=78
[G4 General] alejobog:
When step 4 is done, the imei is lost and it is not connected to the pc to copy the files, it seems that all the partitions were lost.

Anyone else has had that problem?
[G4 General] harysviewty:
Where do you come from? What phone and which firmware you're using?
[G4 General] ling751am:
That not a problem and not an issue, it's normal cuz the rom's country code doesn't match to your phone

Anyway, close it and enjoy your nougat

It's seems Polland's baseband can't match to your country's band

Smooth and faster? Nougat

4G+? Marshmallow :P

Yeah, you got it

Alternative way: Use LG Flash Tool

You have bad luck

Perform a factory reset won't lost IMEI, try LG Flash Tool and flash KDZ again
[G4 General] smurf_1:
Do I need to use my country KDZ file? Or no matter from which country, all the files you gave should work?

Did you use something different from what specified in the opening post?

Thanks!
[G4 General] sz.gery:
Please help

Hi,

I'm thinking about upgrading my H815 to V29A Nougat. If I understand it correctly, i will lose Safety Net dependant apps like Pokemon Go and banking apps with this method. Is there any way i can upgrade to Nougat and not lose the ability to pass Safety Net? I'm considering bootloader unlock if it would do the trick. Can someone write me a guide if it's possible to do?

Thanks!
[G4 General] bobmatu:
sorry with this guide there is the root included in nougat?
[G4 General] benminja:
Unknown Model

Get one step further this time, but step 6 ended in bootloop. Hard resetted it - LGUP with Uppercut says "Unknown Model", Flash Tool says "Contact system administrator - system info can not be found" or something like that. Any ideas of what I can do to fix this?

Edit: Suddenly worked with FlashTool and the 10F kdz, not with any other kdz. Started over. It finally worked! Thank you!
[G4 General] JustAddGenius:
Working fine with H815T

Just wanted to say I've had this running on my H815T (Hong Kong) variant for the last week with no issues at all. It's amazing how smooth nougat is!

The only difference between the H815 and the h815T is one 4G band, so that's no longer working for me (band 40). Maybe check if that band is important for you before anyone tries the same thing (I take no responsibility etc etc).
[G4 General] ling751am:
Sorry but I don't play PMGO, so if there's any solution, I'll reply you :D

Sorry for what? I'll punch your face!

READ "KNOWN ISSUES" BEFORE ASKING ANY STUPID QUESTION

yeah, you got it

you can use that band in hidden menu, but no CA for you
[G4 General] VirtualBit:
I used only the files from this thread

worked perfectly (phone is more responsive and snappier with Nougat)
[G4 General] nisnis39:
Sorry for taking long to reply.

I'm from France ( 4g band: B3, B7, B20, B28 )

Using a Lg g4 H815 with currently the stock V20H-EUR-XX firmware ( Previously using the V20D )
[G4 General] kalanakodicara:
My phone had big core bootloop problem. I couldnt fix it with mm without root and locked bootloader(Singapore version) had to downgrade lollipop. Any way to stop 2 big cores with this v29a?
[G4 General] ling751am:
SafetyNet: You shall not pass!!!!!

Hey guys, I've an idea to solve this, but I need some time to try this

Hope we can break this wall : )
[G4 General] kaziutus:
Im stucked in 6th step. after typing those commands immediately there is a "#" in new line. after reboot i still have not a supersu. I can't attach a screenshot but in ports it saids \device\lgandnetmdm1 reg_sz com6 and \device\lgandnetdiag1 reg_sz com7. Ofcourse i unzipped root system to .img. What am i doing wrong?

//edit

okay now it works, i did same three times in row and it works lol. i will give info after install nougat

//edit2

works perfectly, thanks!
[G4 General] slhsrc26:
....................................... 6. Open cmd and change to same folder ,,,,,,

i do not understand this part ... which folder

I open cmd Send_Command.exe \\.\COM5 enter later error.......
[G4 General] slhsrc26:
6.line help,,,,,,,,,,

I did not understand cmd. my port com5. open cmd..... .C:\Users\pro2000\Desktop>Send_Command.exe \\.\COM5 enter eror.........where am i doing wrong
[G4 General] since HOX:
You have to type in the address of your command.exe
[G4 General] fuzzytrick:
Hey, if I already have Android Lollipop, 5.1 (V10a-EUR-XX), can I just root it and continue from step 7? If so, is there anything else I should to for the process to work properly?
[G4 General] slhsrc26:
are you explaining in a little more detai....sample.....command.exe file in LGH815_ADB
[G4 General] since HOX:
When you open cmd, you need to type there the address of your command.exe . For example if your LG815_ADB main file is in your desktop first you have to get in this file then start the command.exe
[G4 General] ling751am:
The same folder where Send_Command.exe located

Google "CMD Change Directory"

Google is your friend.

Woah! you have a European G4, just unlock bootloader and flash TWRP, then flash this zip, you're done!
[G4 General] ling751am:
if you stored those files at your desktop

open cmd

cd C:\Users\YOURUSERNAME\Desktop\THEFOLDERNAME

and Send_Command.exe

Be honest, don't flash this phone, or you get brick, you don't understand about flash phone, go buy a new phone is the best way to get 7.0

thanks for reply to slhsrc26.
[G4 General] Nihilistikgrind:
Prerooted H815 SEA 10b system image or I can use H815 v10F KDZ ?

Hi everyone,

Can I use the KDZ file posted by the OP to downgrade to Lollipop? My phone's the international Variant (H815), bought mine in Singapore. I'm currently on marshmallow (Software version is V20i-SEA-XX). Or do I need to download a prerooted H815 SEA 10b system image? Tried searching for that prerooted system image but I can't find any. My laptop's kind of crappy so I can't do the root injection. Thanks guys!
[G4 General] slhsrc26:
Thank you for your interest.....

I solved the problem
[G4 General] Nihilistikgrind:
I need your help guys. am I doing this correctly? I've done this several times but once I reboot I cant see SuperSU,so I'm not yet rootee[IMG="screenshot of command prompt"]https://ibb.co/hO6gVw[/IMG]
[G4 General] Nihilistikgrind:
Succesfully flashed nougat! thanks OP \m/
[G4 General] ling751am:
Hmm.. no, you can't

Download SEA 10B KDZ + prerooted system img and follow my steps, you'll get Nougat

Sorry, I can't injection root for you, ask someone : (

Or... If you can't find any prerooted system img, you can flash TWN KDZ + prerooted system img to your phone

And that would turn your phone to TWN based, some features won't work properly, do this on your own decision : )

I'm happy that you solved this : )

You're welcome : )
[G4 General] slhsrc26:
v29a

instead v30 full rom zip if we upload rom work?
[G4 General] makinaakafa:
i am using nougat.

What should I do to get back to 6.0?

lgup error when trying to load
[G4 General] sphilipo:
Worked on Israel version H815L

Thank you very much !!

You gave a second life to my phone :good::good::good:
[G4 General] fffirass:
Plz , some help

Hi , i have been using nouget for like a month with 0 bugs but it drains battery insain i charge it 2 to get a full day so i try to flash it with refurpushed but always at 25% the lg up in system installing give me this message 0x2000 invalid command response . and i forget to check the roll back any help ??>.
[G4 General] Rich Rich:
Any luck with safetynet?
[G4 General] :
Try this: https://xdaforums.com/g4/development/h815-nougat-stock-locked-bootloader-t3709119
[G4 General] ling751am:
What ?

Not me but LG Polland : )

You need to replace the lastest LGUP_8994.dll

nah, bad luck, we can't pass it :L
[G4 General] ChristosPas:
this should work with and unlocked bootloader too right?
[G4 General] Engelm:
If it works with an locked bootloader then it will work with an unlocked bootloader as well.
[G4 General] ChristosPas:
i m using noogat on a h815, which i installed via twrp recovery after rooting the phone. The phone got unrooted as the kdz that i downloaded was a stock one, so now i m trying to root it again. My only problem is that when i connect the phone to my pc and lunch lg up, it does read the phone but it says unknown model. What can i do? Maybe use Flash tool instead?
[G4 General] LPCG7:
Thank you [MENTION=5125041]ling751am[/MENTION] for this post. Following this guide I went ahead and updated to Nougat on H815 and so far it's doing great. I've not yet maxed out its performance but at times I notice some lags. Overall, great one :D:good:
[G4 General] ling751am:
if you unlocked, just flash the zip with twrp

yes, but I recommend use twrp to flash it, unlocked bootloader no need these steps :)

you should go fastboot to flash twrp then normally install the zip

some lags? did you do a full factory reset?
[G4 General] ChristosPas:
which .zip? the .zip file would install 7.0, firstly i need to downgrade from 7 to 5 am i right? (and the 5 is a .kdz so i think it cant be flashed from twrp)
[G4 General] LPCG7:
Yes I did. In the camera as well as video dept I notice lags, and while accessing gallery and social media apps too.
[G4 General] ling751am:
if you are on android 7 now, why you need to flash this?

and the zip is "Official nougat zip as same as my guide's zip", the zip can be flashed in TWRP, but after flash this, you should flash twrp thru fastboot again

hmmm, are you sure your output location is internal storage? if not, that's your sdcard too slow

accessing gallery files lag might be the sdcard too slow, or your videos/photos too much, try to do a *full wipe* without restore anything
[G4 General] ZeligPC:
FlashFire problem...

Hi, thanks for the guide.

I've done all since point 7, but now FlashFire isn't working.

Installed it, given root access, but when I run it, it crashes and exit after initial checks... :mad:

Any idea? Is there another similar app I can use?

===EDIT===

Ok, I solved reinstalling FlashFire from Play Store.

Nougat up and running, so far so good.

Thanks again! :)
[G4 General] LPCG7:
Yes Sir, it's in internal storage. Maybe cause of the restore it lags a bit. I'll try a reset without restore. Thanks:good:;)
[G4 General] Johnno9999:
someting is wrong in this rom, as said before by other users, the battery is empty in 3 hrs, without using the phone.....
[G4 General] ZeligPC:
That's strange... I have absolutely no battery (or anything else) problems with this ROM.

Battery discharge is very similar to MM stock ROM to me, it covers a day of normal usage, and almost no draining when in stand by.
[G4 General] Johnno9999:
I went back to 6.0, now is normal use again....

indeed, almost no drain when standby, i was used to that, but this rom from thread was empty battery as you watch....