yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] saxcouper:
Anybody have an idea to go to go back to stock? I had as Sprint G8. and now it has a T-Mobile boot screen and no dowload mode. because of the engineering abl. I want to go back to stock so I can unlock it
[LG G8 Guides, News, & Discussion] AsItLies:
Did you save off your original Sprint rom using bkerler edl tools? Did you know Sprint doesn't make it's kdz available?

See, these are things we learn, sometimes the hard way if we don't bother to read enough posts, that both Sprint and AT&T do not make their kdz available. And if we didn't do a backup of them, then we can't go back.

The only option that might work is to find someone else's backup, and u usually have to flash ea partition one by one in qfil. But be aware, there are some partitions that are specific to ea device; ftm, fsg, fsc, modemst1 and 2.

If you don't have those, not much of a chance to get back without maybe using a paid service.

cheers

(and btw, you can unlock it by just (cross) flashing any stock, it just needs to be bone stock (any) for BL unlock to work).
[LG G8 Guides, News, & Discussion] Inshal1997:
will this work for V30b-IND-XX android 11
[LG G8 Guides, News, & Discussion] Senko7699:
I did, but for some reason i can't call or send messages anymore,my headphone jack doesn't work,and i have a ton of more problems.
[LG G8 Guides, News, & Discussion] pichulo:
New Android 11 for LG G8s removes Magisk Root FYI.
[LG G8 Guides, News, & Discussion] AsItLies:
So you used a guide to crossflash / update your G8s to a11? If you had root, as you say, you didn't get an OTA, pretty sure OTA's don't work with root.

And you say doing this, you lost magisk root? Well of course you did, because magisk resides in the boot partition, and that got replaced by the update.

This has nothing to do with a11, think this is just normal procedure.
[LG G8 Guides, News, & Discussion] jaisunny:
Fastboot does not connect to device at all. Nothing is happening. Perhaps it's my windows version?
[LG G8 Guides, News, & Discussion] pichulo:
I used LGUP to update it. The SW for my specific variant is available at LG Fanclub website so I just used the Upgrade option and now I have the 11. You are right, the boot partition was overwritten and when I tried to patch it with the new one using the same procedure, the phone stuck at the G8s boot screen.

I thought that would happen so I'm not surprised at all, I just posted it because I saw some people asking and I thought this would save them some trouble if the don't want to lose root.

If you think I did something wrong and know how to root it again with Android 11 please let me know.!! Thanks :)
[LG G8 Guides, News, & Discussion] AsItLies:
Wrong? no not at all. It's just misleading, as it has nothing to do with a11, and everything to do with when you update the firmware (to any android version) you overwrite the boot and of course lose magisk / root.

how do you root it again? what procedure did u use the first time? you say you tried to patch it with the same procedure but didn't work, that's what you need to be more specific about.

I know some people have gotten it working, I'm trying to get it with twrp and dm-verity also, but have gotten it to do just magisk with basic normal procedure, save boot partition, use magisk patch it, flash boot back. Same as always, and yes, I'm using a11.
[LG G8 Guides, News, & Discussion] pichulo:
Ok needed to be more specific. I will try to patch it again and see if maybe I missed something.
[LG G8 Guides, News, & Discussion] pichulo:
Alright, so what happened was that I patched boot_a when I'm in boot_b. That's why it did not work before. Now Im rooted again with magisk. Thanks for your comments that made me double check on this. :)
[LG G8 Guides, News, & Discussion] jazir:
How can I make my device pass basic safetynet attestation? I've tried the magiskhide props solution here and can't get it to work: https://xdaforums.com/t/module-magiskhide-props-config-safetynet-prop-edits-and-more-v6-1-2.3789228/

Does anyone have a tutorial or a self-written guide they can give me to pass basic safetynet attestation?
[LG G8 Guides, News, & Discussion] AsItLies:
I'd suggest try this attestation test from playstore. Just tried it myself and it says I pass. So I deleted cache / data from playstore app and tried again, no message it's certified or not now. Think that's good.
[LG G8 Guides, News, & Discussion] jazir:
Mine shows that it fails, same issue. I cannot restore via lg backup because it says there is an error that a google certificate for key attestation doesn't exist. I've tried both lg bridge and the mobile switch app to restore, neither work due to the key attestation failure. The error is received immediately after opening the app.

The other solution besides passing attestation or restoring the certificate would be to somehow bypass the check on the mobile switch app.
[LG G8 Guides, News, & Discussion] jaisunny:
I cannot seem to get fastboot to work.

When i type "fastboot devices" nothing happens.

i've tried turning w10 into testmnode, turning off driver signature enforcement too. What should the drive be listed as in device manager for the phone while in fastboot mode?

Help?
[LG G8 Guides, News, & Discussion] AsItLies:
Sounds like you need to look in device manager and find the entry with an ! next to it (usually says Android). Then select to update it with the ADB entry of the LG usb drivers you installed.

Windows is like that. You can use the exact same device, but you still have to load the driver twice, once to use it with adb, and again to use it with fastboot.

windows, dumbest os ever.
[LG G8 Guides, News, & Discussion] jaisunny:
Thanks, I managed to do it in the end. It was a driver issue in device manager. I just changed the driver from "android" to "ADB" something or other and it worked. Got there in the end.
[LG G8 Guides, News, & Discussion] jaisunny:
Got an issue, hope someone can help.

I've unlocked the bootloader and rooted as per instructions but. How phone calls and SMS don't work at all. On android bootup I have 2 system apps that won't work.

"Process system isn't responding"

And

"System UI isn't responding"

Any advice greatly appreciated.

Thanks
[LG G8 Guides, News, & Discussion] tracid1987:
Is there any chance somebody finds a way unlocking the bootloader of LG G6 H870? i missed the deadline of lg dev site shutdown, i didnt know about it :( it would be cool if somebody found an alternate solution. If anybody knows anything please let me know. thank you
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
عندما أضيف ملف firehouse يظهر لي أن هناك خطأ ما الحل؟
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
When I add a firehouse file, it shows me that there is an error, what is the solution?

This is the footsteps that appear

(15:32:49 : ERROR : function : main : 320 Uploading Image using Sa

Download Fail : Sahara Fail : QSahara Server

Fail : Process fail

Finish Get GPT)

Note that my phone is a g820tm20j
[LG G8 Guides, News, & Discussion] eddieofny:
I made a stupid mistake and am wondering if anyone knows how to fix it.

I got to the part where I needed to flash the abl_a.bin that I had downloaded (the engineering file) to abl_a and abl_b through QFIL. But I misunderstood what I was reading and flashed the abl_a and abl_b backups that I had made back to abl_a and abl_b respectively. Now my phone will not boot regularly, or into EDL mode, or any other mode at all. No combinations of buttons will turn the phone on, and my computer won't recognize it when it's plugged in. How can I fix this and get my phone to turn back on?
[LG G8 Guides, News, & Discussion] AsItLies:
That sounds a little weird. You saved off the abl a and b, then flashed them back (mistakenly). And now it won't boot?

If that **IS** all you did, then maybe you flashed them to the wrong sides? a to b and b to a? Or maybe you didn't actually back up the abl, and backed up some other partition by mistake?

One thing about edl mode, you should **always** be able to get to it. Even if the phone is bootlooping. Just hold vol minus and pwr until screen blanks, then start spamming vol up.

keep trying to do it, it's kind of a pain to get the right timing, but it does work.

cheers
[LG G8 Guides, News, & Discussion] luridphantom:
close qfil, reboot your phone normally then reboot into edl again. sometimes the connection is weird

also make sure ufs is selected not emmc, looks like you set the wrong memory type
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
No, I did all the correct steps exactly as on the site, but I reach this step and I cannot continue. I wish I could send a picture
[LG G8 Guides, News, & Discussion] AsItLies:
A sahara error happens for various reasons: 1) be sure to use a usb 2.0 port, not 3.x 2) If the qpst / qfil driver you're using isn't signed, be sure to set windows to allow unsigned drivers. 3) The usb cable you're using needs to be 'data' capable, not a simple 'charging' cable. 4) Some have simply used a different computer and found it works.

cheers
[LG G8 Guides, News, & Discussion] eddieofny:
I followed the first part of this guide (just getting the bootloader unlocked, not onto rooting with Magisk yet) and after I had unlocked the bootloader and rebooted, my phone would not boot beyond the g8 splash screen. I finally got the phone shut down through the fastboot interface, but I can't get it to boot up fully. Does anyone know the fix for this?
[LG G8 Guides, News, & Discussion] AsItLies:
It won't boot until you restore the original abl a & b.
[LG G8 Guides, News, & Discussion] eddieofny:
That doesn't relock the bootloader?
[LG G8 Guides, News, & Discussion] AsItLies:
No, of course not.
[LG G8 Guides, News, & Discussion] eddieofny:
Sorry, I'm new to all this. I'm assuming then that an adb command is what it takes to relock the bootloader just as it was needed to unlock it. So why do all the stuff with the .bin files and partitions? What's the point of flashing all that stuff instead of just loading the phone into EDL mode and using the fastboot command? I tried to look this up for myself, but I'm not really sure where to start
[LG G8 Guides, News, & Discussion] AsItLies:
Many people are new to it, so no worries.

Here's some things to get to know; 1) adb commands are not the same as fastboot commands. Some things you can do with adb, others you have to do with fastboot. 2) EDL mode is not the same as fastboot, again, 2 separate things. We only go to EDL mode (to flash the engineering abl), because it's that abl that gives us fastboot. Normally you would just go directly to fastboot using the phone keys, but LG removed fastboot from the phones.

We're only flashing the necessary bin files needed to 1) give us fastboot (temporarily) and 2) Get magisk / root into the boot partition.

cheers
[LG G8 Guides, News, & Discussion] mangojain:
Just an FYI, fastboot is enabled on the G8S , makes life a bit easier . . .
[LG G8 Guides, News, & Discussion] eddieofny:
Ok, thanks for this. I think I messed up somewhere along the way cuz I've flashed the original abl files back to their partitions via fastboot commands like the tutorial said to but I still can't get my phone to boot passed the g8 splash screen. And I can still get into fastboot mode by holding the vol- button while plugging the phone in. I can't think of why this would be a problem. I even tries booting into EDL mode again and flashing the able files back through the partition manager. Nothing has changed. I'm sorry to keep asking what ate probably beginner level questions, but is there a way to fix this?

Edit: I think I just realized what I did. I had backed up abl_a and abl_b incorrectly; I had not left clicked them before right clicking them. The back up files were way to big, like some other people had encountered, but I hadn't noticed yet. So I flashed the engineering file to abl_a and abl_b and continued with the process. After that, I realized my mistake and went and made the abl_a and abl_b back ups again. But obviously, I had already flashed the engineering file to those partitions. So all that being said, is there a way I can get the correct .bin files to flash back to those partitions to get out of fastboot?
[LG G8 Guides, News, & Discussion] AsItLies:
Yeah unfortunately that's not a terribly uncommon mistake. Another mistake people make is they use qfil and backup the partitions, but they don't rename them after ea backup.

So they go to the directory qfil uses to backup and discover they have no idea which file is which partition.

Indicate what OS variant and version you have on your phone now, and someone will respond with the original abl bin for you.

the other option would be to use one of the kdz extractor tools and extract the abl, but that's assuming the variant you're using has the kdz available. Sprint and ATT don't make the kdz available.
[LG G8 Guides, News, & Discussion] eddieofny:
It's an LM-G850UM and I believe it was running Android 10. Thanks for all the help
[LG G8 Guides, News, & Discussion] AsItLies:
the 850UM can be sprint, att, t-mo etc etc. which variant?
[LG G8 Guides, News, & Discussion] mangojain:
An unrelated question, but what are the differences between a refurbish, upgrade and ota? One obvious difference is that a refurbish deletes userdata, but what else?
[LG G8 Guides, News, & Discussion] AsItLies:
So found an G8x abl, it's a10, not sure which variant it's for, but worth a try, as it's kind of 'likely' to work.
[LG G8 Guides, News, & Discussion] eddieofny:
T-mo
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
What did you do, my friend, I have a phone like the one with you, did the method work?
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
Please tell me how you did it and what files I'm stuck and can't move on
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
يا صديقي Hey friend please let me know how you did the root I am stuck and I searched a lot and tried all the ways and I have a phone that matches yours please let me know the way
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
Did it work in the end?
[LG G8 Guides, News, & Discussion] eddieofny:
Ok, originally I was having problems because I messed up when I backed up the abl a and b files, but I managed to get my hands on the right ones and flashed them back to their respective partitions per the last step of this guide. My phone still will not boot. Does anyone know what could be causing this?
[LG G8 Guides, News, & Discussion] luridphantom:
you should post pics of where youre stuck and we'll try to help. i unlocked and rooted my g8x when you were typing your original post
[LG G8 Guides, News, & Discussion] sting12345:
Hey guys I just did my LG G8 amazon addition and it all went smoothly until I rebooted out of fastboot and I got an phone cannot be encrypted to do a factory reset with a button to do so.........great no problem. But then when trying to hit that button I have no screen touch at all. Everything else works fine and yeah I did all the steps perfectly. If I have to redo the fastboot flashing of abl a and abl b does anyone have those files they can link or send me? I think mine are messed up to be having the no ability to touch...

Thanks so much

and I think if I can get this working then I'm good to go. Hopefully!!!!!!!!

Please again any help would be great.
[LG G8 Guides, News, & Discussion] sting12345:
can you tell me where i can find the original a and b files? I messed up mine during the process and am stuck at an encryption unusuccful screen and to wipe the device but I have no touchscreen, so I'm guessing i messed it up and need the original ones to flash back into the device and make it work.
[LG G8 Guides, News, & Discussion] googleygoggles:
When I got that error, nothing I tried worked to fix it.

The only way to fix it for me was to start over on a completely different computer.
[LG G8 Guides, News, & Discussion] sting12345:
anybody please? I think theh ab a and ab b stuff got ****ed up and now I have no touchscreen. Really need help getting it back
[LG G8 Guides, News, & Discussion] eddieofny:
This is what I get when I try to power on my phone. I believe the first screen is just letting me know that the bootloader is unlocked. The second screen that says G8 ThinQ on it is where the phone gets stuck.
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
Of course I did this and I used Windows 7 and it didn't work and I was very disappointed I don't know if this is from the type of phone or is it from the computer the version I have is ATT
[LG G8 Guides, News, & Discussion] luridphantom:
might wanna see if you have a backup of boot.img and try flashing that. my guess is that something still isn't flashed correctly
[LG G8 Guides, News, & Discussion] eddieofny:
I have the kdz file, is that different from the boot.img? And is there a fastboot command for flashing one or the other?
[LG G8 Guides, News, & Discussion] luridphantom:
yea a kdz is the full os file that you flash through lgup

you can search for an undz tool to unpack it, take out the boot.img from inside and flash that using qfil or the engineering abl
[LG G8 Guides, News, & Discussion] luridphantom:
if it were me if you can access download mode on your g8, just connect your g8 to lgup and flash from there, much safer than using qfil
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
Thanks everyone, I have used the AT&T version and it worked for me
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
It worked after using the fire hose from someone else and on the same computer
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
I had this problem already and I searched a lot until I found another fire hose and it worked

successfully

Follow this guide and download the attached files in the description and it will work
[LG G8 Guides, News, & Discussion] Zzaa2016aazz:
Simply download this link and use the fire hose inside and it will work fine

Unlock bootloader g8.rar

drive.google.com
[LG G8 Guides, News, & Discussion] ParmesanPangolin:
I've successfully booted into fastboot but my computer is not seeing my phone. I.e. `fastboot devices` does not show my device. Any help?
[LG G8 Guides, News, & Discussion] AsItLies:
That's a windows driver problem. Look in device manager, there should be an entry that says android with a red exclamation mark next to it.

select that and then load driver from your computer, select that lg usb driver for adb. You may have already done exactly that for it to work under adb. Unfortunately windows is so stupid it makes you do the exact same thing again, but this time for it to work with fastboot.
[LG G8 Guides, News, & Discussion] ParmesanPangolin:
It worked! Thanks!
[LG G8 Guides, News, & Discussion] Renwark-Zipper:
I bet this is useless at this point but this should fix your problem.

Instructions

Driver Download if you don't have them already. I just needed to follow the instructions. Choose "Android Bootloader Interface" once you have the option of drivers. Then yes, yes, accept accept or whatever. Your device will show up in fastboot afterwards.
[LG G8 Guides, News, & Discussion] jian1:
OK, finally rooted the LG G8X, can anyone tell me how to disable the Emergency Alerts through rooting? I am in Canada and the Emergency Alerts were sent out at Presidential level all the time (missing children, etc) which cannot be disabled with non-root user. Thank you very much
[LG G8 Guides, News, & Discussion] jian1:
How can you OTA the bootloader unlocked g8x? Do you relock the bootloader , OTA and unlock bootloader again? This is very tedious and will reset everything the phone has.

Can you simply sideload the OTA update through fastboot on bootloader unlocked G8X? thanks
[LG G8 Guides, News, & Discussion] jian1:
Hi how do you do a manual updating on bootlaoder unlocked and rooted phone? Do you have a step guide for me? I am kind desperate. thanks
[LG G8 Guides, News, & Discussion] alexbauer24:
Is it possible to have twrp and install custom firmware like arrowos after the bootloader unlock. I have Verizon version and would like to have arrowos.
[LG G8 Guides, News, & Discussion] Yevgen.A:
any idea where can I find TMobile-frp.img Can I make . img file from .kdz ?

I have G820TM20d_00_TMO_US_OP_0129.kdz
[LG G8 Guides, News, & Discussion] janemanno1:
Hi there. I have got LG V50 ThinQ and I started the process. Backed up the abl_a, abl_b, boot_a, boot_b. Then followed the step to overwrite the abl_a & abl_b with the engineering abl_a. So far so good and no errors. Now the phone won't go in fastboot mode. All I see if the "LG V50 ThinQ" logo and it stays there. Managed to get to download mode but not sure what to do there as it just says download mode and there is no other interface.

Have I bricked the phone?
[LG G8 Guides, News, & Discussion] AsItLies:
Bricked? You know what that means right? Bricked means it's a paperweight because it will do absolutely nothing, zero, zilch, nada.

Your phone obviously turns on at least right? Then no, not bricked.

You don't say how you're trying to get to fastboot, so that may be the problem. You could also simply use qfil and restore the original abl partitions and it should be (as long as you didn't change anything else) back to exactly the way it was.

There are other possibilities of what's wrong; 1) using qfil is a little daunting, it's old software. In qfil, if you want to load or backup a specific partition, you have to left click that partition name first, then right click it. If you just right click it you'll actually be backing up / loading image to the last partition you left clicked (even though you right clicked a different one).

This is because when this software was written, the newer type 'action' that takes place with a right click (select and right click), is not the way they programmed it, assuming it was even available then.

Also, when you're doing any reloading an image with qfil, if you get a message like 'data overflow', then don't do it. It means you have the wrong partition or you're trying to load the wrong image to a different partition. If you do that, now yer getting very close to actually bricking the device.

cheers
[LG G8 Guides, News, & Discussion] ClownWorld:
Does this work on g8x thinq android 9 locked bootloader by at&t?

If android 9 is a problem is there a way to update to 10 without at&t? If not, what do I need to do, buy a prepaid at&t SIM card? anything else? does it require an active subscription? or a balance refill?

The phone was purchased on contract with at&t and they never started/finished account or something and sold it off instead. ("Looks like you haven't paid off your device yet.") So it is in their name. I suppose with the imei.
[LG G8 Guides, News, & Discussion] Yevgen.A:
This guide works on LM-G820TM
[LG G8 Guides, News, & Discussion] ClownWorld:
Do you know if it would work on a G850UM?
[LG G8 Guides, News, & Discussion] Yevgen.A:
Yes, it would. Author used LM-G850UM device during process. Screen of his fastboot:

https://xdaforums.com/attachments/fastboot-bootloader-locked-and-slot-jpg.5194783/

But I recommend you to upgrade to Android 10

LG G850UM(LMG850UM) aka LG G8X ThinQ - LG-Firmwares.com

LG LMG850UM download the firmware for free! Detailed installation instruction. Video review of the model and its features. User feedback and latest news.

lg-firmwares.com
[LG G8 Guides, News, & Discussion] ClownWorld:
Does not seem to be a file for the G850UM10F. Would it even work for me to update to it with a locked bootloader at&t unpaid contract android 9 device?
[LG G8 Guides, News, & Discussion] Yevgen.A:
1) I am not sure about unpaid contract and att. This guide was working on my unlocked Tmobile.

2) No you do not need to have unlocked bootloader to flash stock firmware
[LG G8 Guides, News, & Discussion] ClownWorld:
Ok, I just did a flash backup as per https://xdaforums.com/t/tutorial-full-flash-backup-and-restore.4362809/

Do you know if the last part of the model name matters like the 10F part of G850UM10F or the country/region of the .kdz rom file. I can't find the G850UM10F file, do you know where one could find it? I tried flashing with lgup with G850UM20b_00_OPEN_CA_OP_0427 and it said that it was the wrong sap, scp or something like this.
[LG G8 Guides, News, & Discussion] chelsea67:
So it will not work on android 11?