yashsingh1/xdaforums huggingface dataset:
[G4 General] steadfasterX:
you need to do this for any ROM version you flash: https://xdaforums.com/g4/general/guide-create-custom-x-cores-boot-image-t3718389

so extract the boot.img of the ROM, follow the above guide, put the modified boot.img back to the ROM zip (overwrite the existing boot.img within), flash.

you wanna flash a ROM of 2017 ;) lol but yea up to you. the answer to your question is in the OP - LIMITATIONS / KNOWN ISSUES -> 1), 2) , 3) , 6) 8) (I cannot download and check every ROM out there!)

.-
[G4 General] steadfasterX:
New FAQ - what you ever wanted to know about the boot process / bootloader stack:

27) a) What is the "bootloader stack" on the G4?

27) b) What is the boot process on a Qualcomm device like the G4?

Check it out ;) --> https://xdaforums.com/showpost.php?p=75817533&postcount=2

.-
[G4 General] bazaleem818:
LOL

Because i want the Quick Remote app from Lg

that remote has the learn features

i dont see any custom N rom include this app

thank you SFX
[G4 General] bazaleem818:
I find this kernal to make qremote work

https://xdaforums.com/showpost.php?p=73730054&postcount=18

to flash on los based rom

My device is h815 usu with rr n rom

Can i flash this kernal or i will get bootloop
[G4 General] ST Dog:
Don't flash that as it's the wrong device.

The fixes in it could probably be ported, but the dev hasn't been active in that thread for 2+ years.
[G4 General] bazaleem818:
thank you if some one has any idea getting qremote to wrok on N or Pie pls let us know
[G4 General] steadfasterX:
You can ask the OP of that thread if he can share his kernel sources or/and the commits he made to make this work. Then I may can add it.
[G4 General] lifes_alpha_tester:
How to revert back to stock LG ROM?

I used your salt software to pseudo unlock the bootloader of my canadian LG G4 (h812), the salt application gave me otput that any H811 ROM was compatible.

I would like to revert back to the stock ROM.

I was browsing through your server in leech.binbash and found "G4_ARB-any_v29a_FULL-STOCK-ROM_UsU.zip" file.

Will clean flashing this file in TWRP, revert it back to stock?
[G4 General] steadfasterX:
consider browsing the FAQ of this thread instead of my server ;)

.-
[G4 General] lifes_alpha_tester:
Okay, went through FAQ section, it said I can flash Stock ROM back.

Where can I find the files and the procedure?
[G4 General] steadfasterX:
hmm i guess you dont wanna nougat so:

for Nougat:

FAQ #16

for any other (added as FAQ #28 now):

extract with SALT system + boot + modem partition of the stock ROM kdz of your choice

(beware of the ARB!!! SALT will tell you on extracting the ARB and in the main window your device's ARB. do not flash anything higher then what the SALT main screen is showing or you might have a paperweight afterwards!!!! yes, even the system image can blow fuses!)

fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash modem modem.img

boot TWRP (if you do not get into TWRP at the first try it gets overwritten. if that happens you must re-flash TWRP in fastboot)

flash the baseband package of your model

factory reset in TWRP (obviously all your data will be lost - so backup before)

if you encounter issues FORMAT data in TWRP (obviously all your data will be lost - so backup before)

.-
[G4 General] venom2410:
Hi! Can someone upload H818_UsU_unlock.zip please? :highfive:

I know that H818 temporary disabled: (KNOWN ISSUE: TOUCH STOPS WORKING!)

My H818 have bootloop problem and after baking method this phone bootup but I know it's

temporary fix and motherboard already dead. For now I have another LG G4 LS991 and want to unlock with UsU, and I need some

experience with UsU unlock. That's why I need H818_UsU_unlock.zip only for practic unlock :fingers-crossed:
[G4 General] lunasspecto:
Okay, I understand UsU only works with ARB 2, but it's been a while since I investigated this and since the FAQ was posted, so I was wondering if anyone out there in the broader community has made progress on ARB 3 -- for selfish reasons; I can't really justify the cost of replacing my h810 and I have ARB 3, but I'm getting a little tired of Android Marshmallow.
[G4 General] steadfasterX:
OP: Last Updated 2019-08-02

FAQ: Last edited 5th August 2019

Don't you think that such a big achievement would have find its way there?

yea I know.. the hope of the hopeless ;) I said "never" in that FAQ as UsU is based on a leaked file signed by LG (see UsU explained in post #3) and there is no reason that this happens again for a higher ARB.

Don't loose your time waiting on such a thing.

As you have a H810 there is a way though, risky with a 60:40 chance of having a paperweight afterwards but there are 2 users going through it successfully - with issues (well you should always be able to go back to H810 again though).

a h810 (no other) can be converted to a h811 which then can be unlocked simply in fastboot. so while that sounds easy it comes with the risk of never be able to use your device again.

so guarantees are elsewhere and I cannot guide you on that.

https://xdaforums.com/g4/help/successfully-unlocked-h810-bootloader-t3672604

https://xdaforums.com/att-g4/general/how-to-install-cyanogenmod-h810-t3388019

The cell service issues they have are very likely because they haven't flashed the H810 modem partition again after converting but as said.. no guarantees.

If you really wanna take the risk BEWARE of the ARB levels whatever you flash and do a SALT backup before doing anything else.

.-
[G4 General] mark324:
I've finally upgraded from h812 g4 to g6. I want to sell the g4 now, I have stock nougat installed and wondering if factory resetting it will break the phone. If it does I don't want to sell the phone knowing it will mess up if the buyer decides to factory resets. If that's the case can I revert back to stock marshmallow, removing salt and twrp,unroot.
[G4 General] Bcoates84:
Usually people pay more for modern O.S. The LGG4 is pretty awesome. My POP has the G6 and is not too happy with it. I do believe a factory reset is safe to do. Always make a back up to be safe and if it fails just restore it. The LG software for p.c is okay to do a backup. It's not as cool as TWRP. Ok ttyl.
[G4 General] mark324:
Thanks, I just tried factory reset, it just reboots to TWRP, I'll just wipe the data from there, at least I know it won't mess up using factory reset, I'll just sell it as it is with bootloader unlocked and rooted.
[G4 General] rogosteve:
Worked like a dream on my h812. Installed LOS 16 and rooted with Magisk. Thank you so very much for all your hard work and beautifully detailed instructions. You're truly gifted.
[G4 General] ercanacar:
Hello, I was update maybe more than one years ago.

I can update custom rom it is ok.

But can I update TWRP or modem firmware, kernel etc. is it possible? So i have little bit problems.. Example phone cant awake from sleep...
[G4 General] Bcoates84:
Click the power button 3X.
[G4 General] mkrts:
can you make a virtual box image

i have no usb drive now physically

also it could be very useful for everyone it can be more speedy
[G4 General] steadfasterX:
a virtual box image of what? UsU ;) ?

read the FAQ in the FWUL thread. its all there..

.-
[G4 General] mkrts:
sorry i am have been reading the thread for hours for days :)

may be i forget

i just wanted this

- i download a virtual box image

- than i start this image in virtual box

- than i start to use FWUL

i just dont want

1- download fwul image

2- download etcher

3- use etcher

4- use a physical usb flash disk

please if it is possible
[G4 General] steadfasterX:
https://xdaforums.com/showpost.php?p=75770329&postcount=527

it was in FAQ 4b but I updated it with 4c so it can be found more easily now.

.-
[G4 General] barabangel:
My device is unlocked by a very old method.

I have TWRP.

Can I use the Unlock procedure again to use your roms that require UsU...?
[G4 General] steadfasterX:
by a very old method? so I guess you mean officially? then this thread is NOT for you.

UsU is only needed when you have a device which cannot be unlocked officially.

.-
[G4 General] mkrts:
very very very thank you my lord :cyclops:
[G4 General] STALKER18:
Hi !!

I have the H812 version. I want to go back to stock MM, using kdz a d extracting using SALT, i have a question here, when plugin thr phone in download mode ofc, my ARB shows : ARB_unknown.

Also when extracting the kdz file it says :

This KDZ has an ARB of : arb-detect-error.

And the window is empty

I dont know what to do.
[G4 General] dillusi:
Hello.

I am getting the USB device not found error even I have changed multiple cables. I amc urrently using VM to run FWUL and SALT. May I know what did I do wrong or missing?

I am currently using H812 model.
[G4 General] sdembiske:
First off, this is not an UsU unlock question - it should have been posted in the FWUL or SALT threads.

Refer to my answer in post # 728 in the SALT thread - read it carefully and make sure you understand it.

If you have any further questions, please post them in the relevant thread.
[G4 General] dillusi:
Noted with thanks. Reading through the threads and now will check them for unlocking process. Thanks!
[G4 General] dillusi:
Finally it is USUed. Thanks to TS as well as [MENTION=6302635]sdembiske[/MENTION] for helping for flashing my LG G4 (H812).
[G4 General] ercanacar:
I will try on next stuck !
[G4 General] ercanacar:
3X power button doesn't work. :(

It still sleep. Awake after many difficulties.
[G4 General] mkrts:
thank you

i have been usu'd :)
[G4 General] ercanacar:
ok. I have fixed my LG G4 problems,

I found new kernel for Lineage Os 16. and upgraded my kernel. Restart it.

Wipe everything full wipe,

Installed Lineage Os 16,

installed Google apps 9

restarted and

everything is fine. No any stuck no any slow issue.
[G4 General] mkrts:
i made a presentation for Turkey users. (LG-H815TR devices)

Türk kullanıcılar için Türkçe pratik anlatım

[YOUTUBE]https://www.youtube.com/watch?v=JW5fihxwBS0[/YOUTUBE]

---------- Post added at 12:42 PM ---------- Previous post was at 12:42 PM ----------

i made a presentation for Turkey users. (LG-H815TR devices)
[G4 General] tonycfc:
Used this to unlock my H815 SEA, no problems so far. Awesome!!

---------- Post added at 11:54 AM ---------- Previous post was at 11:50 AM ----------

I just don't understand why LG decided to only allow European models of the G4 to be officially unlocked. Bummer.
[G4 General] DC95:
Had an old G4 in my closet that I gave up on about two years ago because of lack of unlock/root options. Stumbled upon it today and researched to find that UsU existed now. Worked w/o issue on a US991, running LOS 16. Thanks!
[G4 General] sev7en:
Good afternoon,

thanks for the amazing post... I have an H815 flashed to Nougat with no issue but the modem doesn't work anymore and it is in persistent Emergency Mode only.

Can please take a look on that?
[G4 General] steadfasterX:
well "flashed to nougat" is not very specific. There are 12342143243245235 ways what this could mean and the same amount of ROMs which are Nougat based.

You should always write absolute clear of what you have done. which ROM you flashed and how.

Assuming you have flashed STOCK nougat and used the CORRECT zip to do so (FAQ

#16

) this is what to do:

read the OP:

topic "LIMITATIONS / KNOWN ISSUES" --> 4)

topic "Making the baseband flashing obsolete"

read post #3 "UsU explained (in short words)"

topic "<model>_UsU_baseband_flash-in-twrp.zip" --> "when to be flashed"
[G4 General] sev7en:
Good evening,

first of all, thanks for your support.

The version of my device is the H815.

The ROM I installed is H-ROM v30 v2.2 Nougat based with kernel v3.10.84 and sw v29a.

I will follow the suggest above, thanks.
[G4 General] Sofilux:
I unlocked and flashed lineage-16.0-20190917-UNOFFICIAL-h815_usu.zip 579.4 MiB 2019-Sep-17 02:59. Everything seems to work, except bluetooth. Is this being fixed or do I need to flash any modem or baseband? Thx!
[G4 General] steadfasterX:
Do you have full clean flashed (format(!) data button in TWRP)? If not that's the first thing you have to do.

It works for everyone including me so there's something wrong on yours.

Note: This isn't a LOS thread here. Go to the LOS thread read the FAQ #1 and follow the guide on there. Option "specific issue" and try to enable Bluetooth . Answer there with the log. That FAQ post also explains what a "full clean flash" is just in case you didn't saw it.
[G4 General] R0yalty:
So it will lowered screen framerate after flashing UsU even flash custom ROM?
[G4 General] Bcoates84:
Yep
[G4 General] sdembiske:
steadfasterX has come up with a fix for this.

Refer to his post # 1773 in this thread. Read it carefully and make sure you understand it fully. Many of us have applied the fix and it works a charm. It does entail an extra step whenever upgrading to a new version of the same rom: The zip file has to be installed in TWRP after you have regular flashed the upgraded version or anytime you install a different rom that is UsU compatible.

FYI: [MENTION=7602857]Bcoates84[/MENTION]
[G4 General] akomakomakom:
Emergency calls only after 1+ days of uptime

My phone goes into "Emergency calls only" mode after 1-2 days of uptime (sometimes after a couple of hours). Rebooting fixes this. Also, location seems to stop working at the same time. Everything works 100% until then. Anyone seeing anything like that?

History

I flashed my stock G4 running VS9862BA firmware by following instructions (with one screwup below):

* Unlocked with SALT using FWUL (made a backup)

* Did a full wipe.

* Flashed a baseband (VS986_UsU_baseband_flash-in-twrp.zip (this was wrong, I think)

* Used dd to zero out modemst1/modemst2 partitions as per some thread I found.

* Flashed vs986_2BA_modem.zip in TWRP to restore the modem.

* Flashed lineage-16.0-20190917-UNOFFICIAL-vs986_usu.zip and gapps

I then encountered the above issue with Emergency Call Only mode (I also saw "No Sim" somewhere in the settings menus). Again, this happens only after 1-2 days of uptime.

Then I tried to use my original LG modem backups:

* Restored my SALT backup of modem/modemst1/modemst2 using dd in TWRP (not sure how else to do it).

No change with emergency mode issue.

Would a full wipe or full restore or any combination thereof address this? I haven't found any mentions of anyone having this problem - usually it either works always or not at all.

Failing that I might set up root and some scheduled reboot app (scheduled reboot doesn't appear to be a feature of Lineage OS).
[G4 General] akomakomakom:
... but it works with stock

Went back to my (Verizon) stock backup and everything works fine...

Maybe the LOS build is buggy. Not sure if I'll try this again so this may remain a mystery.
[G4 General] Sofilux:
Hi, first of all thanks for your help. I did a full clean flash, several times. Could you please point out, which LOS thread you mean exactly. Seems like I can't find the right thread. Although, how do I generate the log? Thank you!
[G4 General] ST Dog:
The thread for the build you are using.
[G4 General] Sofilux:
Thank you for your reply, but this does not help me. I am using the latest Pie build from steadfasterX server

steadfasterX said: Go to the LOS thread read the FAQ #1 and follow the guide on there. Option "specific issue" and try to enable Bluetooth . Answer there with the log. That FAQ post also explains what a "full clean flash" is just in case you didn't saw it.

I can't find this FAQ #1

Thank you!
[G4 General] ST Dog:
post #2 in the thread.

Instructions for bug reports.

https://r.tapatalk.com/shareLink/to...2&share_fid=3793&share_type=t&link_source=app
[G4 General] yauseu:
ABR3 H810

I have an ABR3 H810 and want to unlock UsU or bootloader.

I couldn't find out what happened to this conclusion.

https://xdaforums.com/g4/help/successfully-unlocked-h810-bootloader-t3672604

Could you tell me the best way I can do it?
[G4 General] steadfasterX:
no.

but here my answer on anothers user request:

https://xdaforums.com/showpost.php?p=80056484&postcount=1857

EDIT: added FAQ #29

.-
[G4 General] yauseu:
Thank you for your reply.

There are risks but I will challenge because my H810 is not used now.

I tried to flash H811 20o kdz to my H810 using LGUP or LG flashtool 2014.

But my try was a failure with 'KDZ file is invalid' and 'connection server error'.

rom needs to be modified？

Is it inappropriate to speak any more in this thread ...

Thank you
[G4 General] steadfasterX:
You need to hexedit the kdz ofc and using lgup
[G4 General] yauseu:
I hexedit the kdz(model h811 to H810) with winhex and flash it with lgup.

The process has advanced! but Checksum error occurred.

”Error: Error Code = 0x81300302, MD5 checksum error”
[G4 General] steadfasterX:
You have to ensure the ARB version is identical but I guess you had that checked first (SALT telling you the ARB of a kdz when using extract) . Other then that dunno about that error. Haven't went through that progress yet but try to use the XDA search as others had success (hex editing for other reasons). Good luck and let me know how it goes .. ;)
[G4 General] diegorosales994:
Nice work, but downgrade to LL is better

The only thing I don't agree are the "lower frame rates" I know that now at days the lg g4 is not considered a beast of graphic performance but if you wanna play some games at maximum performance is still better downgrade to lollipop, (if you are in a MM rom) instead losing frames.

Love your work but not the frames losing :highfive:
[G4 General] yauseu:
may be hard brick

I will report in order not to give the victim of the continuation.

The procedure is as follows.(Don't imitate!!)

model: H810 H81021z(ARB3)

kdz:H81120o(ARB3)

1: hexedit the kdz(h811 to H810 Only one place) with winhex.

2: flash it with lgup with "upgrade mode". then may be Checksum error occurred.

3: Only one place(At this time, it is automatically in REFURBISH mode.)

4: Finally Hard brick H810 is ready

Qualcomm HS-USB QDLoader 9008 mode when connected to USB.

I haven't been able to get out of this state yet.

Maybe buy a new motherboard on Aliexpress ...
[G4 General] steadfasterX:
Nah LG qualcomm devices are (almost) always be able to recover . Read my sig and find the sdcard unbrick. Flash the h810 files on it as described and when having issues doing so lemme know in that thread.

Thanks for testing btw. So while it worked for some it doesn't work for you... Hard to say why but in times of frankensteins the others might had one dunno.

Anyways the sdcard way should bring it back to life.
[G4 General] sdembiske:
There is a workaround for that. It requires an extra step in the flashing process but works a charm. Many of us have already done it and staying on the MM stock rom opens up a whole can of security worms that haven't been addressed due to lack of updates vs upgrading to Lineage 15.1 or 16.0.

Refer to steadfasterX's post # 1773 for the fix and read everything carefully and make sure you understand it fully.
[G4 General] diegorosales994:
My device is not detected while I'm in fastboot mode

Hi!, I need to tell you my story, recently I've super hard bricked my vs986 because I made a incorrect downgrade, the device only showed the qualcomm 9008, after that I've used Qfil to fix it, (because the world sucks :)) I installed v10 files to unbrick my device that resulted on a obvius super super hard brick!, I've found another tutorial about use ls991 recovery programmer with the original extracted files of my previous firmware version installed, It worked! now I've my lg working but without imei and either without dialing codes working (I've tried a lot of ways to entry svc menu or hidden menu but anything seems to work) because I want to restore my imei (I've copied it) and install it by "qcn restore" on qfil :( , I've also tried flash a rooted rom to access svc menu (hasn't work) or access (((qualcomm diagnostic mode))) by terminal emulator commands and also tried in adb commands by usb debugging with the computer to enter on (((qualcomm diagnostic mode))), nothing to do with that!, the last thing I remember, is that after flashing firmware files (to unbrick my device) with ls991 programmer my device could access in fastboot mode showing a model different(ls991) from mine (vs986) and I tried plugging it in my pc but it wasn't recognizable (that was before flash the stock rom), after flash stock rom the fastboot mode came locked and I've never seen it again ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡AND NOW!!!!!!!!!!!!!!!!!!! I've rooted my device with usu but while I boot on fastboot mode the device still being unrecognizable!! I don't know what can I do, I've read all your post and I found that the model that appears on fastboot mode must be ls991 with any problem, and that's why I've got confused, I'm not sure of what can I do, I suppose I'll be trying to enter on (((qualcomm diagnostic mode))) with a custom rom or trying flashing original dump files of my last mm firmware installed (I've found them recently) and I wanna try.

If you could help me to find a solution to recover phone signal by recovering imei I'd be grateful and I could love you more :o ;)

_____love your work___________

Sorry for my bad english.
[G4 General] dgash:
cant unlock the phone to use it

I have an LG G4 I forgot the pin password so I cant unlock the phone to use it.

I bought some software from wondershare “Dr Fone” to hack into the phone by bypassing the pin code (I guess). The computer does not seem to be recognizing the LG. It is a Macintosh running OS El Capitan 10.11.6

I got the phone into download mode/firmware update but thats it. Any help would greatly be appreciated.
[G4 General] yauseu:
Thank you for your comment.

I tried recovery from the SD card with reference to your thread.([GUIDE][9008][EDL|QDL][QUALCOMM ONLY] Unbrick via external sdcard (no QFIL!))

The conclusion is a failure and if you have any comments.

I tried various roms using a 128GB memory card.

(such as LGH810AT-01-V21y-310-410-JUN-20-2016-ARB03 + 0, H81120x_00_1108, H81120o_00_0613, PR H810PR10a_04)

Only the SALT backup ROM(H81021z(ARB3)) that is only worked.(other was keep black screen and Qualcomm HS-USB QDLoader 9008 mode)

But it has "Secure booting Error! Error Code :1009 OFFICIAL !!" (Downloading mode and normal boot? only white imei mode is move)

I tried both type

1: only flashing sbl1,aboot,pmic,rpm,tz,laf,sdi,hyp

2: flashing all of full backup(include system, cache,userdata)

There was no difference in the movement of both.

Thank you.
[G4 General] Bcoates84:
INSTRUCTIONS:

Just in case you forget - A :eek:

A: Power on P.C & Phone

1. Connect Phone to the Computer via USB.

2. Open a terminal window.

3. Type:

Code:

adb devices

adb shell

cd data/system

su

rm *.key

4. Done...Now You Just Have To Reboot.

Note: If lock shows on boot hit random lock code . Example 1234 ect.
[G4 General] amahmoudeg:
Any Update about H818p UsU ???

Any Update about H818p UsU ???

die to unlock my H818p bootloader :(
[G4 General] steadfasterX:
https://xdaforums.com/showpost.php?p=77443371&postcount=1341

.-
[G4 General] steadfasterX:
and full stop.

You did UsU 6 months ago, choosen a random file you found (yes thats NOT the correct one) and now you bricked. "congrats". Not a surprise for me.. Yea may sound rude first. but:

this thread here has EVERYTHING described and in the FAQ you even find the procedure and the (correct) link to the v29a files for UsU (!) devices.

what makes me mad though (even more then the fact many ppl do not read the FAQ) is when posting multiple times in different areas in this forum. I woke up and found duplicates of the same post in different threads.

Consider to take a look at the XDA rules.

Anyways: your main thread is the correct place to discuss your own specific issue not related to UsU unlock as it is a personal issue due to a personal mistake.
[G4 General] pranciskus2:
I think, you should add to title "exept H818P and H818H" because people who want to buy this phone and check its bootloader unlocking availability will see "Any" and buy this phone.
[G4 General] mekase:
Will this method wipe out my data?

Is there any point in using this over the official bootloader unlock if my model is supported?

I have H815 Europe model with Android 6.0 installed