yashsingh1/xdaforums huggingface dataset:
[G4 General] pr3dicament:
Steadfaster, do you have any links to a H812 MM bootloader stack? I did a factory reset in TWRP literally a minute ago, aware that I'd have to start flashing the baseband.. I already got a return label to just return this thing. Can't get back into TWRP so I guess I'll let it cool down but I'm still curious since the green screen is back now, just after i removed any root and any root app and unfroze everything.. literally in the nick of time. Also, would it be detrimental to flash the recovery.bin that SALT made when I did a basic backup?

EDIT: I haven't flashed anything in fastboot aside from TWRP which was yesterday shortly after discovering this issue of the green screen. I'm trying to do what I can to salvage it before putting it in that mail box. Can always cancel a return if it really is some sort of bootloader stack issue. I'm doing everything I can to make it clear and I end up confusing what I'm saying (or annoyingly repeating it) so I apologize for that.
[G4 General] vsTerminus:
Just a small update from me... H812 user.

I initially flashed the H811 ROM as it was the only thing up. When the H812 ROM went up I dirty flashed that over top. Bad idea, that disabled all my sensors.

Today I wiped everything and started from scratch. Flashed in order using TWRP:

1. MM Modem (previously extracted from MM KDZ using SALT, now stored in TWRP as a backup)

2. H812 AOSCP Nougat ROM

3. H812 UsU Kernel

4. UnSU

5. Magisk

6. Xposed

7. GApps

8. TitaniumBackup

Initial boot was slow but it worked, and the phone thinks it's an H812 now as it should. My sensors work now, and a few other apps I was having trouble with are working now too.

On the downside, video recording with the stock camera app still doesn't work, however a catlog mentioned a missing library that it is trying to load - I'm going to look into that a bit more and I'll share my findings. The phone is upstairs charging or I'd share the log/screenshot.

OpenCamera works, but the videos it produces can be a little choppy.

Otherwise not having any issues worth mentioning after a few days of use. Bluetooth, calls, data, wifi, gps, all working well.

Edit:

Catlog is complaining about the lack of "sensors.hal.tof.so"

Also, something interesting: If you go into OpenCamera's settings and enable "Use Camera2 API" it won't be able to record video anymore.

I'll keep investigating but maybe this will help someone else figure it out first.
[G4 General] pr3dicament:
Now the green screen occurs with no text at all SteadfasterX.

I was literally just getting ready to flash something from my USB-OTG.. the CPU temp was actually pretty good, a fairly low 27C. It's literally just a green screen like the one I showed you except it does not say *anything at all* .. no text, no symbols, no nothing. I am definitely gonna just have to return this. I still didn't get a chance to even flash it yet. This is ****ing weird, but maybe this is something you can put in your arsenal for when someone else has this issue.. hardware failure. And a green screen with no information this time.
[G4 General] adam_s_459_:
I don't think this will help but it is worth mentioning that I have also seen that green demigod screen on my smartphone as well. I found a build of AOKP for H811 on 8.0 so I tried to flash it but it gave me that. I was able to boot into recovery and all was well. This had nothing to do with temperature as my G4 was manufactured in 2017 which means it doesn't have the hardware flaw. Do you know when your G4 was manufactured?
[G4 General] pr3dicament:
First off, it's a used phone.. second.. any phone can have hardware flaws. Do I know when it was manufactured? No.. but this is definitely a hardware issue.. I haven't even flashed a custom rom yet. If it has nothing to do with the CPU, then something else is literally failing. It's bootlooped, then booted fine, then failed to boot into TWRP, then booted fine into TWRP.. all of this while the only thing worth noting that was actually done was UsU unlock. That is literally it. It's back and forth. And considering SteadfasterX is well versed with the G4 in particular and its hardware flaws, I decided to ask him about it and he agrees. Whether it was manufactured in 2017 or 2015 has zero to do with it at this point. They might have done some stuff to fix it or reduce the possibility of hardware issues, but I digress.. I hadn't even done anything CPU intensive. It was randomly shutting off before the UsU unlock, but I just thought it was a problem with an app I installed or something along those lines.. but now it's off/on with the way it's acting, very inconsistent. If I just turn it off for a few hours, then it boots up no problem, and if I start actually using the phone (mostly while UsU unlocked) then it eventually just randomly shuts off and starts looping like FAQ #14 mentions. I haven't even installed any custom rom yet and I'm not gonna be able to because I can't even get into TWRP at least 3/5 times so far after this happened.. and in TWRP I noticed major CPU temperature fluctuations.. from as low as 18C all the way to 40C without even doing anything and letting it idle. This is DEFINITELY a hardware issue of some sort. I haven't used any other ROM other than what it had already came with (Stock MarshMallow) .. so.. I might not know when it was manufactured, but I do know there's a hardware issue here, especially with SteadfasterX actually corroborating that if you look a few posts up. He said it sounds almost exactly like what he has in FAQ #14.
[G4 General] adam_s_459_:
My apologies I didn't mean to sound like I was arguing with anyone because I wasn't. I just thought it would be good to share because on my old device stuff like this was actually the key to knowing what was going on. I was just trying to help in whatever small way I can.
[G4 General] pr3dicament:
I wasn't trying to argue or anything either, if I sounded brash, I apologize for that.. I'm a little frustrated right now.. something is definitely wrong with this.. and the fact that UsU unlock makes it look like I did something to it makes it very likely that the seller won't accept a return. The only truth is that it bootloops over and over when used too much, and when it's constantly trying to boot and then goes back to the LG boot screen that says "Secure boot error, MODIFIED" .. it doesn't help my case much even though this was happening prior to the UsU unlock--I just wasn't getting a Green demigod screen which only occurs when I try to boot into recovery.. it freezes up and says "invalid ram console" at the end of it.. and if it freezes up while I'm booted in TWRP, then the green screen is just simply blank with no hardware/error messages of any kind.

Now at the end of it where it says "invalid ram console" (it just reproduced again) it actually says "Jump to Dload Mode." .. like that. doesn't say download mode, but rather just dload mode. I can still bring up fastboot and download mode, but that's all.. the rest of it seems to just happen randomly no matter what I'm doing.
[G4 General] adam_s_459_:
That sucks man.:(
[G4 General] yuantian210:
[MENTION=5545101]steadfasterX[/MENTION] [MENTION=6260190]fates13[/MENTION] I checked md5 of the downloaded file and it is 63ad8c42499dff5dace76797d069ff5e. I tried to use SALT to extract VS98628A_01_1121_ARB02.kdz. It threw error: missing required file to check for arb
[G4 General] nummer:
Oh.. I actually found that rom and was thinking trying it myself but I'm not sure now... which model do you have?
[G4 General] adam_s_459_:
I have an H812
[G4 General] David X:
Thank you very much for sharing your experience. I have read your post #361. You said "If you love them that much try the stock N rom linked in the OP". I want to stay with stock rom at the moment as I have H812, but I want to update it if possible. Do you mean if I download that new N rom and flash it in TWRP, I will have a N rom which is STOCK? I have downloaded it. It is a small file 26m, just wonder if I need anything else in order to upgrade to N STOCK rom. Thanks.
[G4 General] adam_s_459_:
deleted
[G4 General] sdembiske:
Refer to post # 12 by grantdb , a member who has done it successfully in steadfasterX's ancillary thread [KERNEL][UsU][STOCK|TITAN] UsU patched kernel versions

Make sure you read and follow it precisely and I suggest you direct any questions you have,

before flashing

, to him.

Note

: the Thanks button is there for a reason (bottom right below post).
[G4 General] David X:
Thank you. I will do that.
[G4 General] mwahahaa:
Hopefully there will be a solution for people like myself who flashed their h812 with ARB 0 N ROM as per initial instructions and no longer have a properly functioning device. I have flashed every variety of modem but have never been able restore calls, camera, or sensors, even after restoring my original twrp backup.

EDIT: steadfasterx, any chance you could make a stock UsU lollipop ROM to get back original functioning?
[G4 General] steadfasterX:
Just flashing the modem partition is not enough!

I told you that you need to flash the whole Bootloader stack as mentioned in the FAQ . This restores the original state of your device but you have to choose the correct (!!) kdz of your provider . And you need to use salt to extract it and not a Windows tool.

otherwise it will not work
[G4 General] mwahahaa:
I have flashed the whole stack, multiple times, with multiple kdz, including the one I originally rooted with. Trust me, I have done everything you suggested many times with NO improvement. Faq 18, zzz, you name it. I did use SALT, made no difference.
[G4 General] Vauff:
Has a proper solution been found for the video playback issues on H812 models? I've seen some in this thread suggest using alternate camera apps to fix video recording and playback for recorded videos, but I don't see how that would fix framerate stuttering in other locations such as in browser and on YouTube. Everything else I've gotten working perfect but I can't seem to crack this issue.

For reference I'm running AOSCP 4.1.2 with my original modem (MM, updated from LP) and the patched kernel provided by steadfaster for AOSCP Nougat on H812 models.
[G4 General] TheWarmBreezy:
I unlocked my H812 last night and installed AOSCP Nougat 7.1.2 and then installed the N modem and then reflashed the baseband. Earlier today i tried to listen to music from my SD card and kept getting the "Could not play this song" error so I went back to the "stock" firmware from my TWRP backup and the problen still wasnt fixed and my G4 as a whole is laggy, slow, and unresponsive and the phone outputs no sound at all. Nothing changed when i did a factory reset either

Is there something i did wrong and is there anything i can do to fix it?
[G4 General] Makifylmz:
Hi, there is another way to flash newer twrp version instead of using fastboot ?
[G4 General] mwahahaa:
How about through twrp itself (I'm assuming you want to update rather than first install)? Just flash recovery image through the install option.
[G4 General] steadfasterX:
N modem has issues on h812. Search here.

Just read the TWRP thread or on the official TWRP website for this device
[G4 General] steadfasterX:
okay I see many people doing random things.

But you for example just telling generic information . this way it's impossible to help.

Give as much information as possible! for example the exact KDZ file for EVERY KDZ file flashed is crucial important and what is your carrier? Yes I'm serious I want to know every file name as this is the only way for me to verify what you have done .
[G4 General] rezalaga:
Still not success when i want to flash Nougat stock rom G4_ARB-any_v29a_FULL-STOCK-ROM_UsU.zip, following all instruction, FAQ, start over from beginning. Is there any right procedure for G4_ARB-any_v29a_FULL-STOCK-ROM_UsU.zip???Thanks before....
[G4 General] steadfasterX:
what model??

.
[G4 General] rezalaga:
H810 at&t using 10o Lollipop success unlock with UsU
[G4 General] steadfasterX:
define: "no success"

sorry but this is complete useless information..

give as much detail as possible. what happens exactly?

Consider to upgrade your bootloader stack to MM as described in FAQ #20

-
[G4 General] David X:
Hi steadfasterX, thank you again for all the work. I have H812 currently stock MM rom. I tried to follow post #12 to upgrade to stock Nougat, but it is beyond my skills to complete those steps. I am really worried that I would mess up the phone. Can you please let me know if such stock N rom exists for download or I have to wait for it?
[G4 General] steadfasterX:
Pls read FAQ #22

:)
[G4 General] bs1180:
Hi,

I recently successfully flashed my H815. Thank's a lot for this great job [MENTION=5545101]steadfasterX[/MENTION].

But now after one week of no troubles, my phone rebooted during updating of apps from the Play store and now it does not bootup anymore.

It does a 2nd reboot and then remains on the LG screen.

I even can't boot into TWRP recovery.

I can boot into fastboot but nothing else.

I tried to reflash modem.bin in fastboot but that didn't change anything.

Hopefully my phone can be reactivated and is not bricked?

Thank you very much in advance
[G4 General] steadfasterX:
no its not bricked. Read FAQ #14

-
[G4 General] rezalaga:
Bootloop and when android starting at 98%, stuck and reboot, repeatly
[G4 General] steadfasterX:
Consider to upgrade your bootloader stack to MM as described in FAQ #20 and do not forget to flash the baseband pkg afterwards
[G4 General] Samrach Kem:
Hihi bro

Hmm...if you don't mind could you please have a quick look at Flex 2?

In the past Flex 2 and G4 is a good rival now Flex 2 end up homeless because of no- bootloader_unlock. I'd appreciate your hard working. Thanks
[G4 General] David X:
I just wonder if I need to flash MM modem in fastboot FIRST, then follow the steps below, OR just follow the steps below. Can you please confirm?

Boot into recovery.

Mount system partition (??? don't know what I need to do in TWRP)

Flash full stock nougat (G4_ARB-any_v29a_FULL-STOCK-ROM_UsU.zip).

Reboot into recovery.

Mount system partition.

Flash baseband file (H812_UsU_baseband_flash-in-twrp.zip).

Reboot into system.

Wait for stock rom to fully load
[G4 General] mwahahaa:
I'm on vacation but I can tell you that I have a h812 on Koodo (telus) in Canada. I have extracted from multiple kdz from the Canadian g4 thread, as well as from here: https://lg-firmwares.com/lg-h812-firmwares/#firmwaresList

If you have any specific suggestions on the best option to try I am happy to hear it.
[G4 General] steadfasterX:
use the latest TWRP PREVIEW version and you do not need to mount system before anymore

Boot into recovery

Flash full stock nougat (G4_ARB-any_v29a_FULL-STOCK-ROM_UsU.zip)

Flash MM modem

Flash baseband file (H812_UsU_baseband_flash-in-twrp.zip).

Reboot into recovery

Reboot into system.

Wait for stock rom to fully load (takes up to 15min)

Do you have ensured to use just the

TLS

firmwares?
[G4 General] David X:
Thank you so much. Was just going to add a question: after above steps, do I need to flash h812_stock_boot_build-11-nougat.img (26m size)? I have read instructions several times just to ensure I understand correctly and follow all steps. Thanks again for clarification.
[G4 General] steadfasterX:
up to you.

step 4 can be one of:

A) flash baseband file (H812_UsU_baseband_flash-in-twrp.zip).

OR:

B) flash h812_stock_boot_build-11-nougat.img (choose IMG button in TWRP, browse through the boot image file, choose BOOT partition when asked)

the stock boot image way (B) is recommended though
[G4 General] G4_PITA:
Patiently waiting....

I'm patiently waiting for ARB 3 to be supported on my AT&T H810 w/21y software.

Hope this comes out soon...
[G4 General] yuantian210:
steadfasterX, fates13, Any help? Thanks.
[G4 General] David X:
Sorry to ask so many questions. Hope this is the last one regarding rom upgrade to Nougat. Are there any detailed instruction to extract MM modem? Thanks.
[G4 General] steadfasterX:
I told you. Share the log.

It's written in the faq I mentioned.
[G4 General] mwahahaa:
Yes. telus, although Rogers should work too. Is there anything else that the early UsU unlock changed other than those 9 bin files? That's why I asked if you could make a lollipop or marshmallow version of UsU to use to see if that brings back the lost functioning.
[G4 General] sdembiske:
(Still) Experiencing issues with video recording/playback on ASOCP N ... ?

If you're experiencing issues with picture quality and/or video recording/playback with your current camera/video app on ASOCP N, check out Camera FV5 Lite and Cinema FV5 Lite (both available on Play Store for free - they also have paid versions if you want to upgrade to more functionality).

So far, the best out of the number I have tried on my H812

. These have now become my go-to and I have sidelined Open Camera as I feel overall quality and performance is quite a bit better with these (there are two separate apps but you can switch to video mode in the Camera app if you have also installed the Cinema app).

Video and Recording/Playback quality is very good for the Cinema version, not getting any stuttering, etc. - seems very smooth. I'm quite impressed with the quality (colour/lighting/resolution, etc.) for a free app.

In the Camera app, you have to go into the app's settings, touch on the camera icon and then scroll down to Compatibility - touch on that and select at the bottom of the menu, Force usage of legacy camera driver, to get it to work properly and be able to focus on what you want to take a picture of. Quality of the picture seems very good.
[G4 General] rezalaga:
It's difficult to find MM kdz of LG G4 H810, but by the way my device detected H811 in GPT info at Salt, can use H811 kdz for the MM bootloader stack?
[G4 General] David X:
I searched but couldn't find detailed instructions on how to extract modem file with SALT. I downloaded stock N rom for H812, saved it under C and USB. In SALT, there is a extract button, but I couldn't find KDZ files. I must miss something. Can you please point to the post or link which has some detailed steps? Sorry if I missed something during my search. Thank you.
[G4 General] adam_s_459_:
You need to download the KDZ from this thread and extract that with salt to get the modem file.

https://xdaforums.com/g4/general/canadian-guide-complete-source-lg-g4-t3212449
[G4 General] leo_ng:
h818n~~~pls help to unlock it ~we only can root in LP~~~MM cant ~.~
[G4 General] adam_s_459_:
Dude....he's working on it read the OP. Be patient.
[G4 General] mwahahaa:
Is it possible that the baseband is the source of the problems that some people are having with the h812? That seems to be the only factor that doesn't change with each step I take; I have flashed several bootstacks and ROMs, but in every case I have cellular problems. Most everything else works fine. Could the h812 baseband package be partially incompatible with some carriers (like Telus for example)?
[G4 General] steadfasterX:
yes.

flash a LP modem of TLS (without baseband pkg) is the best option to enable everything.

-
[G4 General] bs1180:
Thanks a lot!! First step in freezer worked temporarily for backing up.

Now tried to fix it with hair dryer. If this does not work permanently I'll try it with heat gun once more.

:good::good:
[G4 General] mwahahaa:
I'm sure I've tested that before (just flashing bootstack before rebooting, then flashing baseband later when that didn't fix the problem) so I guess it must be something else.
[G4 General] David X:
Thank you very much for your direction. Do the carriers matter when extracting MM modem? Because only Rogers 20x stock kdz is available. But mine is from Telus.
[G4 General] sdembiske:
You can download what you need from here: https://lg-firmwares.com/lg-h812-firmwares/

It's the go-to site for stock kdz's - scroll down to LG H812(LGH812) aka LG G4 Official Firmwares and select the TLS H81220z_00_0327.kdz file - it's MM
[G4 General] David X:
Thank you very much. Below is what I have done.

- download kdz file.

- start SALT

- copy kdz file on desktop (seems it is the only place I can copy and later I can select it. I can't select from usb or c drive etc. Sorry I haven't used linux before)

- click extract, but program freezes in several seconds. I have tried several times but it happened each time.

Are there any steps missing or wrong?

Is there any other way to extract? I saw the notes don't use windows tools.

What type of file after extract, .zip or .img?

Please help. Thanks.
[G4 General] steadfasterX:
Please consider next time to use one of the billions paste services when pasting log files. One example is in my signature.

I have fixed this issue in SALT v3.12 which has been released right now.

-
[G4 General] sdembiske:
I'll defer to steadfasterX or another member who has done the extraction successfully ... I use FWUL & SALT on VirtualBox and connect a shared folder to my host machine to access files I need to work with or for storing my SALT backups.
[G4 General] acillatem666:
hi, thanks a lot for this post! I´ve been waiting for this to happened, I have a Verizon model, I have a little cuestion...

Is there is a way to install AOSP rom from another G4 (like intenational or att) and make it work?? I don´t know, maybe installing the rom and then the kernel?? or I´m totally wrong??

thanks a lot :D
[G4 General] David X:
Thank you for sharing your procedure. I suspect it is missing the destination to extract the file to. I will search how to connect a shared folder (usb?) as destination (just a guess).

Can any friends please help share how to extract properly? Thank you.

Edit: I created a link of kdz file in usb to desktop (instead of paste to desktop) which might save the space. Then I select the file in desktop and leave 'tmp' in target dir. as is. It doesn't freeze, but a window with error message pops up: "this KDZ has an ARB of: arb-detect-error". So there are no partitions in the list to select.
[G4 General] sdembiske:
Read the OP thoroughly - YOU HAVE TO MATCH YOUR GPT COMPATIBILITY for now which is displayed in SALT.
[G4 General] yuantian210:
thank you for your help. it works great.
[G4 General] David X:
I have tried to extract MM modem from stock KDZ with SALT without any success. I searched and found "LG Compressed KDZ Extractor". I extracted kdz and got modem.bin.

- Is this tool ok to use to extract? I saw the notes "don't use windows tool", sorry to ask this question, but just need to solve this last issue prior to try stock N rom.

- If yes, can I change .bin to .img or .zip in order to flash it in TWRP? Or I have to use fastboot (?) to flash?

Thank you in advance.
[G4 General] sdembiske:
No, you cannot use the LG Compressed KDZ Extractor. Not OK.

.bin is not a zipped file. I'll defer on whether you can zip the .bin file and flash it in TWRP - I would flash it using fastboot myself.

See my post # 368 in this thread for an efficient way to access fastboot mode quickly without shutting down and doing button presses etc. It's all I use to access fastboot, Recovery (TWRP), reboot or shutdown. I highly recommend it.

Check my post # 527 for a very easy way to install FWUL in VirtualBox - ready made up-to-date FWUL persistent virtual disk images you can plug into VirtualBox and go ... just connect your host shared folder, check and use the + sign to add your device to use USB 3.0 in the VBox settings and remember to update SALT to the latest version. Can't make it any easier than that.
[G4 General] obvious:
[MENTION=5545101]steadfasterX[/MENTION] as a matter of curiosity, roughly how many unlock packages have been downloaded?
[G4 General] Engelm:
....

This question can be answered on your own xD

https://androidfilehost.com/?w=files&flid=249164
[G4 General] obvious:
Whoah :D