yashsingh1/xdaforums huggingface dataset:
[G4 General] pr3dicament:
I'm just trying to make sure that having stock MM is not an issue.. Yes, it does fulfill said requirements.. Please recheck my previous post, I put an edit in there with some other questions.

---------- Post added at 03:40 PM ---------- Previous post was at 03:32 PM ----------

I thought that would brick it.. I'm sorry if I'm having issues comprehending some things, there's a lot going on and I'm trying to clear up everything I can.. that's all. I'm not seasoned with LG Phones. Hell, I can't even find a way to enter stock recovery manually with the power+vol down buttons.. and I also noticed that after the MM upgrade, it only gives people the option to factory reset, not to wipe dalvik or anything else.. I know that with TWRP, it wouldn't matter, which is why I love it. That being said.. are you sure I can downgrade to Lollipop with this anti-rollback crap? .. I don't know, the **** that LG has been doing literally just makes me want to run away from it sometimes. It's a great phone overall, though.
[G4 General] mertklic:
Success with H815TR & H815TUR!

Thank you again
[G4 General] bdasmith:
Wow! Thank you so much.

You, sir [MENTION=5545101]steadfasterX[/MENTION] , are a master! Thank you for all the time and effort you put into this project. I am a thanful and happy follower and user who has now greatly benefitted. My hat off to you!

I am the happy user of a rooted marshmallow on my g4. It is glorious!
[G4 General] hey_joe:
SteadfasterX replied to what you need to do. If you can't wait for his guide to fix your phone, then just do the same thing I did. Replace all the files from his arb_0 modem bootloader stack with the one from your carrier ( there is a link to Telus files in the faq section ) then flash that one followed by the baseband uSu ( not sure if this last part is necessary but I did anyway and it fixed mine).
[G4 General] nummer:
You can do the entire unlock process on MM, you do the following:

1.Download the UsU_unlock zip and place the aboot/rawres/laf images in your internal storage download folder

2.Go to download mode and start SALT

At this point i recommend doing basic backup before anthing else

3. click the UsU unlock and follow the instructions (pick the download option for unlocking)

How to flash twrp:

1. download latest TWRP on your computer

2.go to fastboot on your G4

3. flash TWRP with following command:

fastboot flash recovery twrp.img

4.enjoy! (press power+vol down to access twrp)

As for custom roms, no rom has been specifically developed for h812 yet, I wouldn't flash any custom roms yet, because theres always some sort of problem, like brightness not able to adjust, or no sensors.
[G4 General] fates13:
Figured it out and got stock lollipop to boot however, this test revealed that the APN issue doesn't have to do with the rom because I was still unable to get cell service on stock lollipop using the stock lollipop boot and modem, APN was screwed up and I was unable to edit or add, which I definitely could do before UsU. [MENTION=5545101]steadfasterX[/MENTION], hopefully this gives you some clues into why VS986 is having these issues.
[G4 General] pr3dicament:
I'm in the process of a full backup right now with SALT using FWUL Persistent.. this is a very useful tool. To hell with LGUP. :P

---------- Post added at 05:18 PM ---------- Previous post was at 05:12 PM ----------

Also.. thank you very much for giving the answers I asked for, including the information about custom roms.. I would have messed up with an assumption otherwise because according to SALT the GPT compatibility for my device is H811 (and as you know, I'm using an H812) .. I'm guessing once I have TWRP that I can just root the current (Stock MM) rom by flashing a zip? Please tell me if I'm missing something there. Again, thank you for being helpful instead of being condescending. I do appreciate that.
[G4 General] අධිරාජ (Adhirāja):
You can flash the stock Android 5.1 kdz for H812 using LGUP before you do the USU unlock. Who said its not possible to downgrade???

---------- Post added at 10:28 PM ---------- Previous post was at 10:26 PM ----------

Are you facing any issues at all?
[G4 General] steadfasterX:
as discussed in the support chat:

backup first, either with or without system (your decision) and be extra careful to flash the right MM release as the ARB level must be not higher then 2
[G4 General] Stettin:
I was able to UsU my 5.1 (rooted system.img) phone without upgrading to MM first. I had to use the nightly release of mAid though. For some reason stable wouldn't let me do the UsU. I installed TWRP (TWRP-3.7.0_9-PREVIEW-300_g4.img) and a ROM successfully, but I can't seem to set a secure lock screen method (pin, pattern, password). I think that issue is ROM specific though. This is the ROM I successfully flashed.

https://xdaforums.com/t/rom-android-13-usu-lg-g4-aicp-18.4631395/
[G4 General] steadfasterX:
likely OS related. try flashing another one and also use the factory reset within TWRP (not from the OS)
[G4 General] PH_Android:
Hello. Please see debug log when I try to UsU VS986, Specific issue is "Expected HASH: f8e26b6df293d87aa40ca635a6407291495024bcf413a93302589c95e68b2b6a but got c0d03d485f8873a74b5038b458b241111e0266e2de43c5390f8f5a4c2919cf7d"
[G4 General] steadfasterX:
do not use direct flash. internal storage method should work just fine
[G4 General] PH_Android:
Thank you, UsU was successful.
[G4 General] BobaScript:
I'm typing this right before uni class, in hopes that I can reply with any requested info- once I get back! I am trying to boot mAID off of a USB stick, via a Windows 11 PC.

The problem:

There seems to be a problem with booting mAID and my graphics card/graphic driver. mAID keeps getting hooked on a black screen during bootup.

mAID versions tried:

I downloaded the latest (stable) release of mAID -> booted -> I see the mAID splash with the countdown to boot -> infinite black screen after the splashscreen.

The same problem happens with both the Nightly release, and the last FWUL release. However, with the FWUL boot, I get a bit more visual information/logging. It gets held up at "[ok] reached target graphical interface", and it never gets past there.

I've tried all of the mAID's I've listed above with both Rufus and Etcher (as precaution). I just can't find a way to boot this up properly....

System Specs & The Phone (for future questions):

- Ryzen 7 3700x (latest drivers)

- RTX 3080 [EVGA FTW3] (latest Geforce Driver)

- WIndows 11 (latest update)

- ASUS ROG Strix B550-A

- LG G4 VS9862BA (VERIZON)

Please let me know any info. I am new to android and rooting, but I have a background in Software Engineering, so I'm not an entire idiot (unless...).

UPDATE:

I managed to get a pic of what happens sometimes before it black screens.

tldr; Used Etched on Windows 11 -> usb -> secure boot is off -> mAid splash shows -> boots into black screen. Happens with stable, nightly, and FWUL. Can not boot mAID no matter what I've tried.
[G4 General] steadfasterX:
there is a mAid thread, a mAid matrix and Telegram group.

this is about UsU and while it depends on mAid this is not the ideal place for mAid support .

you should really read the troubleshooting documentation : https://code.binbash.rocks:8443/mAi...ting-Boot#if-you-can-reach-the-maid-boot-menu
[G4 General] Sanboi:
Hi everyone! Does anybody know how to unlock my LG G4 818P I recently upgraded it from 6.0 to android 7(Nogout) I found out that the official Unlocker that LG had is disabled..so if you know any safe method just let me know.
[G4 General] steadfasterX:
see https://xdaforums.com/showpost.php?p=77443371&postcount=1341

buy another model or phone and always avoid ali express!
[G4 General] timbuctoo:
Just got a used LG G4 (H812). I want to unlock the bootloader, but as mentioned in the op

how do I find which out which version is currently installed?
[G4 General] steadfasterX:
settings - phone - android version or so. check the baseband iirc
[G4 General] danikXD:
Hi, I tried using UsU unlock from Salt 3.36 on mAid live boot usb, but it shows: "Error: Your Download mode version is not supported! Downgrade to LP or MM!"

In my settings menu the version shown is 6.0, and if i'm not mistaken it's MM?

According to SALT: My device model is LG-H815L, version(by LAFd) H81520g

Antirollback is 0, GPT compatability is H815, country is COM and carrier is GLOBAL.

I've read all the FAQ and the first post in this thread, but didn't find something i missed..

Any help will be appreciated :)
[G4 General] steadfasterX:
just use the internal storage flashing method and you are good to go
[G4 General] danikXD:
Hadn't succeeded using it, when not in download mode, SALT created multiple requests on the phone ("allow this pc to read storage?") and reported no phone connected. But i tried restarting maid and connecting phone in download mode before booting the computer, and this time uSu worked without a hitch.

Thanks for creating all this tools for us to use!
[G4 General] HUN-Mentol:
Hi,

I tried. Really. Not worked.

Flashed the maid iso, booted, started.

Then clicked on SALT icon - and the links NOT working (for example? update, or download a LAF for H815).

Any suggestion?

Thanks.
[G4 General] timbuctoo:
Thanks. Is this is safe version to unlock the bootloader with UsU?
[G4 General] sdembiske:
Should be good to go provided your ARB as indicated in SALT is 2 or less.

2) ARB less or equal

2

So ARB 3,4,5,........ WILL NOT WORK!!

I unlocked my H812 years ago with the USU method and have continued to use it as my daily driver ever since.
[G4 General] steadfasterX:
Simply ignore the message about flashing or downloading LAF. This is not working anyways as long as the device is locked and meant for officially unlocked devices only. Using the internal storage method for UsU unlocking is recommended anyways.

Don't skip the SALT backup step though!
[G4 General] steadfasterX:
Yes 20x is fine for the h812. Don't skip the SALT backup step though
[G4 General] dawid808:
Hello,

where can I find instruction for 'internal storge UsU unlocking'?

I have the same problem as 'DanikXD'. My download mode is not supported even though I have MM and ARB = 0.
[G4 General] steadfasterX:
In the OP... check the topic

"OK enough about all this: LETS UNLEASH YOUR DEVICE" 🤔
[G4 General] dawid808:
Button "Unlock G4 (UsU)" doesn't work for me so I started from that point:

"Boot your device into fastboot mode (yes UsU has enabled an unlockedfastboot access for you!):"

But after that my phone didn't start in fastboot mode just in normal Android.

I've started fastboot mode from 'Simple-ADB' but I can't flash TWRP because my phone is still locked

Can you tell where I made mistake?
[G4 General] steadfasterX:
So you skipped unlocking because something was not working and then wondering why a next step which requires an UsU'd device (!) is not working?

You need to unlock / UsU the device. You cant skip.this step. If that is not working try it again and if something failed go in SALT -> advanced menu -> debug log -> upload log button. Share the link.
[G4 General] freedo.freedo:
Hello,

I tried to unlock the bootloader to a h815 v20p , with UsU and apparently is ok, but now, I have no phone line. It enters fastboot mode but does not accept me to load twrp, I have tried several and none recognizes it.

In the phone model now says LGLS991, but in Salt says LGH815AT-00-V20p. ARB 0.

I have made backups with Salt, basic and full, but I do not know how to repristinar.

Can you clarify me a little, please...?
[G4 General] steadfasterX:
regarding "it says LS991" please read FAQ 4.

you have used an incredible outdated version of SALT running an even older version of mAid (years old). That itself was not a good idea but it seems it went well nevertheless.

anyways I do not see any screen about the flashing problem you have in fastboot. what exactly are you trying to do, share the command, share the error pls.
[G4 General] freedo.freedo:
Good morning, and thank you for answering,

I explain:

I have another phone h815 officially unlocked, with H-ROM V30 PORT NOUGAT v2.2. I had LCD screen broken by fall and I decided to replace it. After the change I have locked the phone, it turns on but the LG logo remains fixed, the light does not flash, not in download mode, when I try to enter recovery mode, let me choose only the first option if, the second I give the yes but, it is locked and does not boot into recovery. Fortunately before I made a full nandroid copy with twrp.

In order not to waste too much time, I bought another h815, which is the one I am trying to unlock the bootloader, and install twrp, then install the same ROM I had on the other phone, and load the nandroid backup, made with the other phone.

Now, I have unlocked with UsU, and it seems to have gone well the unlock, but I can't seem to install the twrp recovery.

When I turn on the phone, before booting it makes some loops, does not recognize phone line, in Info hardware - model LGLS991 / V. software v20p / does not put n. imei. / sometimes reboots itself.

Yesterday I tried to flash the original KDZ H81520p_00_0403.kdz, but LGUP does not allow me.

How can I repair or add or replace partitions with FWUL ?

What can I do?
[G4 General] freedo.freedo:
Good evening,

In fastboot I have also used "fastboot boot twrp.img".

I have also tried to update the modem co "fastboot flash modem modem.bin", but nothing.
[G4 General] freedo.freedo:
Hello,

It has not worked either by restarting it with volume - and power button...

The phone does not enter recovery mode, and it does not allow me to do a factory reset.

The only thing I have done, has been flashing UsU, and trying many times to flash TWRP.

What can I do to solve this problem?

Can I re-flash UsU?

Thank you.
[G4 General] tommyzola:
Apologies, I need help with flashing UsU. I have an H815 with Android 6.0, security patch level 2017-04-01, SW version V20i-SEA-XX, global carrier, COM country.

I put it in the Download mode via Vol+ and USB cable, run most up-to-date SALT (Git), and get the following error:

"Your Download mode version is not supported! Downgrade to LP or MM."

Judging by 6.0 I am already on MM, am I not?

I also tried the normal transfer mode (MTP in normal boot). SALT triggers a number of access requests on the phone, in the end it doesn't find the device ("no_device_found"), and if I try UsU installation anyway, I get the same error as the above.

I thought I read through the post over and over again, what am I missing? Thanks for the help!

The screenshot below is for the download mode. In MTP mode there's no useful info.
[G4 General] dawid808:
Try to switch SALT into 'UPDATING' mode instead 'STABLE'

I had the same problem and it helps
[G4 General] tommyzola:
You're right! 3.36-1:STREAM worked. The mAid SALT auto-updater is not working for me, at all.

I fetched from Git and it worked. Thanks so much!
[G4 General] freedo.freedo:
Hello everyone.

After a long time, I have put TWRP, but the phone has died after installing the nandroid copy I had from the other h815, and so, I still have not managed to recover the information I had on the other phone, I had no google backup, only nandroid copy.

Best regards and thanks anyway
[G4 General] steadfasterX:
what is the problem and what files are you trying to restore and how exactly? in any case this is NOT UsU related and you really should open an own thread in the help forum instead. Ensure you add more details what is happening and what is failing and screenshots of failures etc etc
[G4 General] timbuctoo:
I know this is the thread for the G4 device, but asking here since there is no thread on the G5 - is there any scope of porting this unlock tool for the G5 (H831)?

Thanks and cheers.
[G4 General] steadfasterX:
no problem - if you find a userdebug aboot for the G5. we found ours in some QFIL recovery files but beware that wrong files can blow physical fuses and so make a phone unusable..
[G4 General] phoohb:
Hi, I can't do "unlock G4 (UsU)", with "live-usb- mAid SALT" gives error:

"PRE-TEST failure! .. and something about testing QFIL method instead?"

What I wanna: a never version of Android, and a rooted device to run Termux properly.

(But, also wanna keep LGs IR-remote control, and "slow motion" camera,, -how possible may that be?)

The device is h815 (EU), with no carrier lock (soo, maybe "SALT unlock" is unnecessary?), can't find LGs support site. Was refurbished (by factory/reseller -stopped working befor warrant went out). Suspected *Frankenstein* device (FAQ #21), took out the motherboard (see attached photo), is that h815???

I was updated a Nexus7 the other day, -much smoother process (just "fasboot eom unlock", done

What device to replace this (LG G4) with? I wanna exangable batteries (and smoother upgrade process!)?

//thx
[G4 General] steadfasterX:
Hi.

1) when getting the error pls share the debug log of SALT (see FAQ there)

2) from your pics it looks like its a h815 as the label is correct

3) you cannot unlock any LG anymore officially as they shutdown their unlock web service for that, UsU is the only option since then and it works great with the international h815, too ofc

4) I can really recommend only Google Pixels. Nothing else makes sense these days. All vendors are doing ****, like Samsung is not providing even fastboot, implementing their knox f*** and ofc going different ways in terms of hardware. many many others are not providing a way to unlock the phone easily or if they do you cannot relock it if wanted. I was a fan of Oneplus until they stopped to fulfill their promises (sec patches) and now finally silently removed the relocking function in several models. sec patches are always behind for other vendors as well ofc. and ofc I would always use a custom OS on a pixel ;)
[G4 General] phoohb:
1) I attach the debug log, same error today.

4) Pixel phones don't have exchangeable battery

(I dono howto exit download-mode without pulling the battery,,, and my Power-bottom i quirky, -doesn't respond sometimes)
[G4 General] steadfasterX:
thanks for the log.

pls use the upload button in SALT and if that does not work a paste service next time.

reg the issue itself: use the internal storage method instead. See the OP "OK enough about all this: LETS UNLEASH YOUR DEVICE!" -> step 3

re the removable battery: all devices without a removable battery have a key combo to hard reset the device. For several devices I own it is long (10s) pressing Power + "Vol up" but it might be different on yours ofc.
[G4 General] phoohb:
Okay success (sortof), Installed "/e/" Os, and everything seams tobe working.

(Have tested: wifi, phone, camera,, works okay)

But, I get some error message while booting:

"Secure Booting error 1003!" And the old LG logo, 2-3 sec,,???

(but seam to work)

Dono if I touched "3) firmware must be MM" in this unlocking REQUIREMENTS (when and where should that have been done?). I have only installed:

"H815_UsU_unlock", in dowload/firmware? -mode.

"TWRP-3.7.0", in fastboot -mode.

And "h815_UsU_20p_bootloader_20p_modem_TWRP-flashable.zip" and "e-0.23-p-20240318-CUSTOM-h815_usu.zip", in TWRP/recovery -mode.

(I may have pulled the battery, to exit&enter, in all modes)
[G4 General] steadfasterX:
maybe read the OP again? "changes in behavior" in particular..

if you flashed that zip youre done.

Sent from HD1911 using ReLabs
[G4 General] bdasmith:
No issues in any way. It is amazing!
[G4 General] nummer:
Yea, just flash supersu and root will be up and running
[G4 General] අධිරාජ (Adhirāja):
Glad to hear that. Do you plan on flashing any stock based custom roms later on?
[G4 General] divineBliss:
Following all working: mobile calls and data, SMS/MMS, WiFi, GPS, Bluetooth, install/uninstall apps, YouTube videos, can set lockscreen PIN?
[G4 General] Donny.x:
Hi i need help. How can i downgrade h815 N to MM thx.
[G4 General] pr3dicament:
I saw it in a post in some other thread that apparently didn't put much thought into this and likely gave up on this device awhile ago, but it said almost everywhere that you can't unlock or root if you have MM. The majority of them also agreed that attempting to "downgrade to 5.1" would brick the device due to the Anti-Rollback crap. Then I saw someone said somethin' snarky and funny, yet true, with a link to this thread. I'm not gonna search much for it but they basically were 110% on the "downgrading will brick" and "can't root, unlock, or anything else with MM" school of thought.. and it seemed as if they'd be correct, at first, because they were corroborating the "stock recovery" being 90% useless because the only option being given was to Reset the phone to factory defaults. I said this earlier: hell, I can't even *manually* get into stock recovery.. not with power+vol down. It just wouldn't work. But I'm in download mode now, using SALT to do a full backup. Very useful tool..

But my question remains here.. do I even need to actually downgrade to LolliPop, though, at this point? .. I'm at stock MM right now and the other answers (in this thread.. just a couple posts above) were simply reiterating the "requirements" section.. one person was helpful at least.. you'll spot who it was. Everyone else basically just wouldn't give an answer or they asked what you're asking, lol.. "who said you can't do that?" etc.. I always make sure about everything based on lots of other conflicting information.. I'm also quite a novice with LG. If you asked me these questions with Samsung phones and devices, I would have answers; accurate ones. But with this LG crap? Nope.. So I literally am just trying to make sure about everything since it's only one device that I have for this.. the H812..

---------- Post added at 07:21 PM ---------- Previous post was at 07:12 PM ----------

So much for all of those assholes that gave up on this device a long time ago and still to this day say "you can't root the LG G4 if you're on MM and you can't downgrade to LolliPop or you'll brick" -- I swear dude, this is why I'm asking so many questions.. it's not because I don't read the Original Post, you know? .. I just see so much other **** counter-claiming this stuff.. so that's *why* I've asked about 50 questions about this stuff, because I'm a novice with the LG G4; I'm just glad I run linux natively or I'd probably have more of a rough time.. and I'm not even the developer. This guy is great.. I'll report when this backup finishes.. and if I have more questions, I apologize in advance for the inconvenience. I just keep asking until I see a straight answer from someone.. and eventually someone gives it to you.
[G4 General] fates13:
If steadfaster didn't list having Lollipop as a requirement then what in the world would make you believe that it might be? That's like randomly asking if having Facebook installed would let you use UsU even though the requirements did't mention it but you thought it might because it didn't mention it. There is zero logic to your question.
[G4 General] mwahahaa:
steadfaster also mentioned in the FAQ that you can download your original modem (which I have now done) and flash it through adb, which may fix some problems. Can modem.img be flashed directly through twrp? Twrp gives option to flash modem.img to "boot" "recovery" or "system image"; I ruled out the last two of course but was wondering if it would be okay to flash to "boot" in that situation). Everything is working great except for cellular service and I prefer not to have to put my SIM into my backup device next week if possible!