yashsingh1/xdaforums huggingface dataset:
[G4 General] steadfasterX:
what is your current bootloader stack (firmware) version?

try only LP modems like 10xxxx without flashing the baseband package, if 10c does not boot try another 10 one.

connect the device in download mode and start SALT -> advanced menu -> debug log -> upload -> share the link.

.
[G4 General] indrajyoti_indra:
It US99121a. I will try other 10 since 10c did not help.
[G4 General] indrajyoti_indra:
Without post flashing USU baseband phone is in bootloop

I tried 10c again but no luck. I also loss sound and camera function along with cell service. All available modem for US991 I have tried. However, I can not find any other lolipop kdz other than 10c to extract the modem.bin

To get the sound and camera back I had to flash usu baseband. Please help or suggest something to get my cell service back. I will submit the salt debug log later this afternoon. Thanks
[G4 General] Makifylmz:
Hi [MENTION=5545101]steadfasterX[/MENTION], I'd like to thank you for this professional work. I have been using UsU on my H815TR since its release. I didn't notice any issue related to UsU. I'm very pleased and I wanted to thank you again.
[G4 General] onikett:
Hello [MENTION=5545101]steadfasterX[/MENTION], I've the H81021y installed on my G4 H810. Is there any point trying your method or testing the ARB number as I've seen you mention in another thread that H81021y is ARB 3?

Any plan to make ARB 3 or up compatible with UsU?

Thank you.
[G4 General] steadfasterX:
FAQ #0 (freshly added at the top to make it crystal clear)

for testing your ARB use SALT

.
[G4 General] asakman:
Cant take backup with salt

Hello [MENTION=5545101]steadfasterX[/MENTION],

I have h815tr. Recently i tried to upgrade to nougat by flashing tot file in lgup. I lost service. I have only emergency calls enabled.

I thought i can get back my phone with your method.

I use virtual box for fwul. I open salt and try to take backup. But it gets to %100 very quick and then nothing happens. I waited for a long time. The same thing happens on both basic and full backup.

I couldnt continue without backup. How can i solve this problem.

Thanks.
[G4 General] steadfasterX:
The solution?

1. write SALT issues in the SALT thread

2. if you write there share the debug log (SALT - > advanced menu) after trying to backup

.
[G4 General] indrajyoti_indra:
One thing I must mention that 10c modem flashing allow me to boot without any bootloop. But no camera, sound and cell service. While flashing with any other modem causes boot loop of I don't flash yay modem after. So basically usu modem flash brings camera and sound back no cell services without boot loop. Unfortunatelly neither 10c nor usu modem brings my cell services back.
[G4 General] steadfasterX:
ok one second.. flash the modem file of your current firmware plus the baseband package.

this should let you boot as you said already and thats expected.

do you have a carrier network lock ? So did you ever entered an unlock key to get cell service?

you should also try to switch the network type to GSM, etc and wait between each attempt at least 5min.

also rebooting may help after switching the network type but always wait a good amount of time afterwards

is your imei there? type *#06# in the dialer

-
[G4 General] indrajyoti_indra:
Without post flashing USU baseband phone is in bootloop

I have no imie. It is career unlock phone and I did not use any code to unlock. I tried all types of settings including GSM, Global etc. Someone in the thread said used 24c modem but I can not find 24c. I tried 24a but did not work. Any other idea to get the cell services back? Thank you.

---------- Post added at 04:59 PM ---------- Previous post was at 04:56 PM ----------

Also as mentioned before 10c modem flashing no boot problem but cell servuce camera and sound do not work. Yay baseband flashing gets the sound and camera back. My original modem flashing or others US991 modem gets into the boot loop.
[G4 General] Bloodyrek:
2 questions:

My device is LG G4 H812 (Bell/Virgin Mobile) and my GPT Comp is H811.

So i should flash the H811 USU Roms available and not H812?

and secondly... does the SALT Basic Backup option work? It goes straight to 100% but the backup folder is empty even after a few minutes? (My backup size is 497mb so it shouldnt be taking that long right?)
[G4 General] grantdb:
You can flash ROMs that are for h811 as long as you flash the baseband zip. The UsU ROMs for h812 need clean flash of your modem and no baseband zip.

SALT backup question is for someone else to answer.

Cheers!
[G4 General] steadfasterX:
Read the FAQ #12 and #13 (and maybe all others..) . Its up to you what to choose.

SALT questions ? Use the SALT thread (and update SALT to v3.18 to fix your issue)

.
[G4 General] indrajyoti_indra:
IMIE number not present, The phone is career unlocked and I do not put any code or unlock key. I tried switching to GSM, Global and CDMA nothing works. If I type *#06# nothing come up. Lollipop 10c modem flashing causes no boot loop but No Camera, Sound and Cell Service. If I use your US991-baseband package Sound and Camera comes back but no Cell Service. All other modem puts it into a boot loop. Unfortunately, I could not take the salt back up for unresponsiveness, that was my fault. But I followed everything else written here. I also took TWARP recovery. But Twarp won't backup modem, I know. LP 10d modem I could not find anywhere to try. I also have tried H811 LP modem but gives the same result as LP US991 10c. My phone is H811 compatible. I tried H811 N roms and USU-baseband 29A but ROM does not boot. Only my TWARP recovery boots okay. I think it might be some specific modem flashing I need. But I tried all modems available (US991-10c, 20c, 21a, 24a, 22a, 23a, 25a and H111-20i and 20o). I tried wiping and restoring several times with various sequences but nothing works. Please suggest something to get the cell signal back. Thanks you.

It is US99121a-Firmware, Kernel: 3.10.84, Build NoMRA58K running Android 6

Network: searching for signal
[G4 General] onikett:
I read all the FAQs. What I asked was do all H81021y have ARB3.

Because I've seen you replying to someone in AOSCP UsU thread that H81021y have ARB3. So I'm asking is it true for every 21y version or you meant his version specifically.
[G4 General] ThePiGuy:
Test using SALT. Then you will know for sure what yours is.

Also, UsU is based on a leaked ARB 2 file hence the reason why it doesn't work with ARB 3 or above
[G4 General] onikett:
Thank you. Then I assume ARB may not be integrated with the Software version itself. I'll check it using the methods mentioned then.

Btw if I find it to be ARB 3+, I guess there is no way I can downgrade to a lower ARB?? Or some other method that would help me install custom ROM on my H811??

Thing is I'm having the problems H810(without AT&T sim) has. Like being unable to uninstall any app, security option not working, phone screen randomly turning on from sleep etc.

FWIW, my device was apparently a Frankenstein device with H811 Lollypop installed on a H810 motherboard. When updating to marshmallow officially using LG Bridge, LG Bridge probably flashed the wrong ROM because of this and the device got hard bricked. Then a repair shop fixed it after finding out that the phone has a H810 mainboard and flashed H81021y on it.
[G4 General] steadfasterX:
Check in your android settings about... And find the imei.

Type in the dialer *#06#* should bring up your imei.

Check the imei by turning the phone off. Disconnect usb. Then press just vol up and down and keep pressed. It should show up your imei.

I told you to use SALT to see your ARB. The ARB is set in the bootloader stack of the firmware. Once booted fuses get physically blown.

I gave you a link where ARB is explained in detail.

I told him already to use SALT but he seems to listen to you more then to me but that's ok for me.

I also told him to read the FAQ and gave him a link to the ARB explanation where he would find all answers to the questions he still ask..
[G4 General] onikett:
Well, I explained twice, once in my original post and then in reply to you, why I was asking the question regarding the relation between 21y and ARB 3 before installing SALT myself.

So it was nothing about listening to anyone more than others.

Anyways thank you for replying. I'll check it using described method.
[G4 General] sdembiske:
Refer to post # 1046 by [MENTION=9189952]tacticalcoconut[/MENTION] in this thread and see if it helps. In particular follow his 'working process' for rom install. Using other than SALT for the extraction is NOT recommended but may be the only option if the stock rom is only available as a TOT file. Refer also to FAQ # 20b in the OP ...

By the way, there is no need to PM me the exact same message 3 times. I'm on an H812 and flashing my MM modem file from my SALT backup solved the one issue I had run into.

Hint

: Please learn to use the Thanks button (

bottom right of the post

where the member is responding to you) when members try to help. I note you have not used it when steadfasterX has responded to you ... you are more likely to receive continued help from members when you do.
[G4 General] indrajyoti_indra:
I was able to see my IMIE only through SALT.

Here is the log you asked for. http://bpaste.net/show/faeb549e0cb0
[G4 General] indrajyoti_indra:
Restored network but still imie 0

Hi I have managed to restore mobile network by not flashing usu baseband but modem 24a. However, imie is still 0. Chsnging network type, removing sim does not do any help. Dialing codes on a phone dies not bring imie but 0. Unfortunately now in salt also showing imie 00000000000. Please let me know your suggestion. Thanks.
[G4 General] steadfasterX:
Pull out battery

Disconnect USB

Put battery back in

Just press volume up and down the same time and keep pressed until you see a white screen which should show your imei (it means imei not imie!).

Is this showing your correct(!) imei?

If you don't see that white screen with your imei (it means imei not imie) then you made it wrong and do the steps above again.

If you have mobile network and call working now do a TWRP backup and leave it as it is. There is no need that you see the imei (it means imei not imie) in android when it works for you without.

Please remove your imei from all your above previous posts!! It's not a good idea to post that anywhere like this and can be misused.
[G4 General] indrajyoti_indra:
Thank you for your reply
[G4 General] tmvkrpxl0:
I'm in terrible problem now... i did everything propery on this thread and it worked, but i installed "Force stop"app from google play store, and i used. Then, my f500 is stopped so i take out battery and put it back. But it stuck in boot it just infinit Lg logo thankfully, i can access to TWRP and fastboot but it wont boot to system if i flash kdz(or tot), this device will be hard brick(just like on this thread) i'm scared of that so how can i fix infinit lg logo without get hard brick?

ps.infinit lg logo with secure boot error modified message
[G4 General] pablo103:
I unlocked the bootloader in my g4. Everything works well, but after flash rom I can not get into recovery. When I try then the flashing mode is activated

Sorry for my English
[G4 General] kevan_f275:
Soft Brick of LG G4

Soft bricked my G4 here's the recovery (see PM new to forum and can't post outside links)

have tried using both lineage and RR on their latest versions and cannot get past both error 7 and error 6 codes.

[MENTION=5545101]steadfasterX[/MENTION] are you able to help at all I've no idea what I'm doing
[G4 General] steadfasterX:
Well when I said use the forum I meant open an own new thread in the help section of this forum.

In that new thread you should mention me.

try to flash and directly afterwards get the recovery log and paste the link to it there ( if you still can't post links just add the character # instead of the dot).

The recovery log you sent is useless as it does not contain the error you see.

Also explain how you soft bricked as you were not able to flash a ROM it's a bit confusing. explain what happens when you boot.
[G4 General] tmvkrpxl0:
Hi steadfasterx, i want to flash F500K on my UsU unlocked device, but if i do it that, my device will hard brick. so i want to convert kdz to zip like your Nougat rom(no recovery&bootloader) so can you tell me how to do it?
[G4 General] steadfasterX:
Yes as mentioned in the FAQ and in the OP you can not flash kdz files anymore .

the easiest way to create your own TWRP flashable zip file would be to take the nougat zip file and replace every single image file within by those you extracted with SALT. Ensure that you do not change the file names they must be exactly as before then it should work

For your model it doesn't matter but for others the ARB is crucial important here so do not do this with firmware files which would increase your ARB.
[G4 General] steadfasterX:
! Important notice !

if you plan to unlock with UsU please wait at least one more day .

today I found a bug which allowed direct flashing even when it is not possible actually. that explains the sometimes incomplete flashing results in the past....

so if you have not UsUd yet it is strongly recommended to wait one more day until SALT version 3.19 comes out
[G4 General] Windows10Mobile:
Version 4.0 on the horizon? at least tell us, how far / soon is the release for version 4.0?

You should know why I am asking for it. (to flash kdz files to Usu'd device directly!)
[G4 General] steadfasterX:
Wrong thread for SALT questions.....

v4 will be released when I have 10k thx clicks (LOL).

OK seriously when I had the time to re-test all flashing parts. The main parts are all implemented and I am continuesly working on that part in the background.

That's all I can say.
[G4 General] JSSSX:
Thank you !

I'm number 102 of successfull bootloader updates, and just registered to say THANK YOU !

It's so well explained and really easy, the most complicate part was to find a USB stick to boot on linux :D

Now, it's time to root and try the provided Lineageos that my previous G3 had for so long.
[G4 General] JSSSX:
MM V20e

(I have a H815 with v20e-TWN-XX, ARB is 0)

Hello,

I noticed that my firmware on MM is v20e and you highly recommend v20p for Lineage OS on Android O.

Is there any link to download the required v20p firmware ? (I haven't seen it)

Also, if I give up, and prefer to jump on N, does the V20p requirement is the same or V20e is fine for N ?

I thought the most difficult part was done, but as my mainboard was changed (burnt or dead chip in the past), I am wondering if I could have a Frankenstein one and changing the bootloader stack would then brick everything.

Thank you for the suggestions.
[G4 General] steadfasterX:
A Frankenstein can only be detected by disassembling the device to view the mainboards front (which sounds more difficult then it actually is).

20p is for the h815 international which can be installed on yours as well. My leech server contains it too.

You can just try any ROM with your current bootloader stack version. In 95% this is not an issue when you are on MM bootloader stack which you are (even when you keep 20e).

You can ofc read the FAQ here and find the stock nougat link to flash the h815 version of N as that contains the nougat bootloader for your model.

TLDR;

Up to you. It's recommended to use the nougat bootloader stack for Nougat and any higher ROMs when having a h815... while its not a hard requirement.

If you have issues with such a ROM while on MM bootloader stack don't expect any help though.
[G4 General] tmvkrpxl0:
so how do i check ARB without flash and type *#5463653*?

okay, i read your another thread and i used hxd to open aboot.bin, and i found this line

02 009690E100310000 HW_ID1"0 U 

01 0000000000000009 SW_ID0‚"0

	*†H†÷

i think ARB version of F500K 7.0 is 0. thanks!
[G4 General] steadfasterX:
Consider to use the thanks Button... ;)

why such complicated? SALT shows the ARB when you extract a KDZ.
[G4 General] JSSSX:
OK I did it, and it doesn't seem to be a Frankenstein one :good:

I guess this is normal now that I cannot boot to MM with the v20p as I was on v20e.

Now it's finally time to get rid of MM and try the Oreo or Nougat version, hope that my G4 and I will both survive to this :D

Thanks again SteadfasterX for your kind help.
[G4 General] tmvkrpxl0:
I extract system,boot,factory and modem, but those are .image file, and tried to rename(.image -> .bin)and replaced it, but it fails, just this output:zip is invalid so how can i make zip correctly? do i have to use another tool(s) to make .image as .bin?

i did those: put kdz in USB -> Use VirtualBox to turn on FWUL -> mount USB into FWUL -> use SALT to extract system,boot,factory,modem -> put on USB -> make zip file
[G4 General] steadfasterX:
read FAQ 24)I have a partition file with the extension: [ bin | image | img | mbn ]. How can I convert this?

and for the rest this is going too off-topic. consider to create an own thread and if you do so explain in detail each step so you can help others wanting to do the same..

.
[G4 General] JSSSX:
Well I'm on Android 8.1 (LOS 15.1) since yesterday, update was not that difficult once the linux part was done.

Phone is working flawlessly, torch is easily fixed with "Kz Torch", every app that I was using in the past run well too.

Maybe, I say maybe, it's slightly slower on some apps or some tasks, but it's definitely not an issue and this might be improved later.

Once again, a HUGE THANKS to steadfasterX for bringing up his incredible work, including his well explained course for dummies who almost never updated a phone this way :good:
[G4 General] timothyhunter55:
Hey, I'm having great difficulty using this - tried downloading various images and iso's, burned to dvd and usb, most of them do not boot into a graphical UI, the ones that did went to a grey screen only. I was able to get it running in a VM (FWUL_1-4_x86-64.iso) but I cannot find any SALT program. Docs say it should be in the LG folder? All I see is LG-LAF. Instructions for installing salt from git didn't work either, the install script fails to find python3, but it's defo there and installed.

Have I failed at the first hurdle?

Thanks for any help
[G4 General] steadfasterX:
FWUL issues?

wrong thread.

Report it to the FWUL thread and if so use the latest FWUL release (atm this is 2.7. your 1.4 is incredible outdated)

.
[G4 General] timothyhunter55:
Ok thank you, that was my mistake. I downloaded the img from the link in the first post and was unable to get bootable anythings from it, so I tried the ISO shown in popular downloads not realising it was so old. I have 2.7 ISO on USB and have got SALT running OK now and have successfully unlocked my H815L, installed TWRP and now running LineageOS Oreo. Many thanks! :)
[G4 General] Starboyfaz:
Hi can some one teach me how to install salt in layman terms i cant seem to install salt.. Im a noob thanks in advance!
[G4 General] steadfasterX:
Use FWUL.
[G4 General] Pete_Mitchell:
Still no chance for h818p?
[G4 General] steadfasterX:
lemme say it in developer words:

sfX = steadfasterX
if (someone->gift->h818 to sfX):
if (sfX == "bored enough"):
if (kernel_patch succeeds):
release = "UsU for H818" <---- here is what you wanna reach
else:
release = "never"
else:
release = "maybe somewhen"
else:
release = never

:p

For non developers here the above in simple words

;)

Without a H818 here by my site I cannot do anything (no a remote connection to yours will NOT help).

I do not have a H818 and I am not willing to pay a penny for one (sorry but I had invested many money already for unbrick hardware etc).

Even if someone or many would sponsor a H818 to me there is no guarantee that I am able to fix it - or even find the time to do so.

Sorry but the chances that this will ever happen are around 0.00001 % which would increase to just 1 % when I would have a h818 here.

Up to you if you still keep up the hope or not.

.

search keywords: h818, H818, h818p, H818p, 818
[G4 General] Pete_Mitchell:
What about donations to buy this one?

https://m.ebay.co.uk/itm/LG-G4-H818...714695&hash=item1a5a901bf3:g:P8AAAOSwLLZbRjFw
[G4 General] steadfasterX:
sure. keep in mind: + £ 24.99 for postage.

so for that example a total of £ 104,98...

Just take a look what the whole unlock get for a donation amount (181 € => £ 164)...

and that is for

ALL

models (we have 10 + several country versions for some models) and counted

since over a year

.... Where it was 1 single person who donated almost the half over the time...

I don't see that coming sorry but if there will be enough donators to get that sum sure.

Donation should just have the h818 request in the comment so I know that they are related.

.
[G4 General] Qanas14010:
Thx to the devs: I finally unlocked my H815 (international version) which can not be unlocked officially through the LG website.

Until now i could only install the UsU ROMs (LOS O and CypherOS N), is it possible to flash other roms as well? I tried some roms but couldnt continue after the boot logo.
[G4 General] taob:
Just wanted to pop in to thank [MENTION=5545101]steadfasterX[/MENTION] for all his hard work on UsU and continuing to respond to users nearly six months into this thread! I was considering replacing my Canadian H812 G4 this year (almost 3 years old now), but I think I can get another year of useful life out of it now (LineageOS 15.1 + Magisk). Thanks for doing what some carriers refuse to do!
[G4 General] Rick299:
Can't install roms

I need some help please. Thank you in advance for your time in helping me. I have a VS986 on lolipop. I could not upgrade to mm before I unlocked with usu as my ARB is 2. The unlocking was successful with no problems but I am not able to successfully flash any rom. I get bootloops and have to restore my original lolipop rom. I have tried this among other things:

1. clean wipe (Dalvic, System, Data, Cache.)

2. flash G4-29a_N_Modem_usu.zip

3. flash ascop_vs986 rom

4. I get a blue screen crash when I reboot to system

I have also tried:

1. clean wipe

2. flash G4-29a_N_Modem_usu.zip

3. flash VS986 _baseband

4. flash G4_ARB-any-V29a-FULL-STOCK-ROM

5. With this it looks like it starts to work and it gets to “android is starting” it gets to 100% then goes to LG logo and then bootloops at that point going back to android starting then back to logo. I then have to return to my backup restore.

I have experimented with other roms to only get bootloops or crashes. Any help is greatly appreciated as I would like to get off of lolipop.

UPDATE: I was able to get things going by going over procedure in the Questions 20.
[G4 General] edemir206:
Hey guys, quick question:

I want to keep my original firmware android 7 but want to enable root. My bootloader can't be unlocked by lg can I have only root by using this method ?
[G4 General] sdembiske:
Suggest you try reading the Requirements section in the OP.

IF

, you can meet ALL those requirements,

in particular #3

, then once you get unlocked and rooted, you can flash the Nougat stock rom in the Downloads section and restore back to where you want to be.
[G4 General] macredash:
No sim card

Successfully unlocked my US991. GPT compatibility reports H811. Tried installing both Lineage and AOSCP Oreo, but both report No Sim Card. Is there a baseband/modem patch that can overcome this? Or can I replace the US991 baseband? I am on cricket (AT&T) if that matters (so H810?)
[G4 General] ThePiGuy:
How long did you wait. Oreo has a bug with ril so it can take ages (even up to a few minutes) before being recognised
[G4 General] macredash:
Thanks. I might try that again sometime. For now I have reverted to Stock MM... wifey is getting impatient with me jacking with her phone. Does anyone know if the US Cellular stock image (US99125a_00_0317.kdz) will get updated on Cricket wireless OTA?