yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] TheMighyLoki:
FWUL not wokring?

So why is FWUL not working? I have tried it on two USB drives thinking that the first one was corrupted, but to no avail. I am on a Windows 10 pro and I am getting the following and do not know what to do. I have also tried a virtual machine and could not get it to work on it ether.

So after some more research I got the VM working, but now I can not get in to download mode. I see it for a split second then it goes to the unlocked boot loader screen. Need Help Thanks.
[LG V20 Guides, News, & Discussion] BROKEN1981:
When using FWUL, are you using persistent mode or forgetful mode? It needs to be persistent mode. At least that's how it worked for me.
[LG V20 Guides, News, & Discussion] whitedavidp:
I see that now and then too. I just pull the battery and try again - sometimes several times.

---------- Post added at 08:32 AM ---------- Previous post was at 08:31 AM ----------

Funny I just checked my notes and I ended up using forgetful mode. I also found that when using Rufus, I had to choose DD mode not ISO.
[LG V20 Guides, News, & Discussion] TheMighyLoki:
Okay so I did a quick reply but for some reason it did not go through.

I have tried both persistent mode and forgetful mode but nether worked. Persistent mode gave me the error and forgetful mode would just loop. The 3rd option did work but I do not know if that is the correct one to be on.
[LG V20 Guides, News, & Discussion] whitedavidp:
And you used DD mode in Rufus, not ISO?
[LG V20 Guides, News, & Discussion] whitedavidp:
Best Way to Undo All This - Return to Stock?

First, I want to thank everyone here for this thread and all the work/help. I really want to like this new phone. But even after rooting and trying to resolve all the myriad things that bother me or don't work (at all or the way I want them to) I have decided to give up and just return the phone.

So I am wondering what the best way to return totally to stock is and remove the boot up flag showing the boot loaded has been diddled can be removed.

I do have normal download mode. I have the original 91810p kdz and uppercut is working/seeing the device.

Thanks

<<< Figured it out myself >>>

I found a couple posts which were terse but sent me on the right path it seems. For others here is what I did:

1. Removed all of my accounts in the Settings.

2. Made sure USB debugging enabled.

3. Booted into download mode (hold volume down whilst inserting USB cable.

4. Fired up uppercut (being sure to disable A/V program first). Sees the device on a com port.

5. Loaded the 10p kdz, checked upgrade, and let her rip.

6. Device rebooted showing my apps and stuff. But no root any longer.

7. Factory reset the device.

8. Went through just enough of the setup to enable developer mode and USB debugging.

9. Note that OEM unlock is still on.

10. Did the following variation on what is shown in the first post of this thread:

* adb devices---->CHECK IF YOUR MOBILE IS CORRECTLY RECOGNIZED IN ADB

* adb reboot bootloader--->THIS REBOOTS YOUR DEVICE IN FASTBOOT MODE

* fastboot devices---->CHECK IF YOUR MOBILE IS CORRECTLY RECOGNIZED IN FASTBOOT

* fastboot getvar unlocked ----->THIS CONFIRMS THE BOOTLOADER HAS BEEN LOCKED

* fastboot oem lock---->THIS COMMAND WOULD LOCK YOUR BOOTLOADER AND RESET's YOUR DEVICE.

* fastboot getvar unlocked ----->THIS WOULD CONFIRM IF YOUR BOOTLOADER HAS BEEN RE-LOCKED

fastboot reboot-----> THIS WOULD REBOOT YOUR DEVICE

11. Device now boots without warnings and into stock Android welcome screen.
[LG V20 Guides, News, & Discussion] cnjax:
To get rid of the warning screen you'll need to relock the bootloader, best bet is to check the original laf exploit thread for assistance on returning to stock
[LG V20 Guides, News, & Discussion] TheMighyLoki:
Yes, I read instruction over and over to make sure that I do not miss anything, but I am just stuck. When I go in to download mode I see it for a split second and then it goes to the boot-loader is unlocked screen. I have tried over 30 times and every time I get the same thing.
[LG V20 Guides, News, & Discussion] whitedavidp:
Yes, I saw that too. Does yours just hang at the boot loader unlocked warning? Or if you wait a few minutes does it go further?
[LG V20 Guides, News, & Discussion] VelosterM14:
Did anybody else getting warnings about files in the uppercut_1.0.0.0.zip file from the link in the first post about generic trojan and virus heuristic activity? Just downloaded this today. I'm using Nortons Internet Security. I'm not a stranger to false positives and having to exclude them, just want to be safe.

Thanks :)
[LG V20 Guides, News, & Discussion] VelosterM14:
Am stuck in firmware update mode and worried I have just bricked my H918 or gotten myself into a place I can't get out of.

It is an H918 running security patch level 10U. I enabled USB debugging etc, had the LG drivers installed and had the port device present.

I used Uppercut.

I got an error 0x2000 trying to downgrade from 10U to 10P with the 10P KDZ file linked in the first post at 10% and am stuck in Firmware Update mode now, which keeps failling with error 0x2000 FAIL cmd SIGN.

Have I bricked this phone?

I tried powering it off etc.but the most I got it to do was to go to Now Waiting For Any Connection.... when I unplugged the cable. (I was already in failed state with LGUP, it wasn't in middle of trying to write anything to the device that I am aware of).

I also tried pulling battery and putting it back in. Device comes on but goes straight to Firmware Update.

I did not unlock the bootloader before trying to downgrade from 10U to 10P, that was not in the instructions, the instructions have unlocking the bootloader AFTER downgrading to 10P. Was I supposed to unlock the bootloader BEFORE downgrading?

The first time I tried, Norton's went pretty crazy in the process with the files the uppercut exe was putting under c:\windows\tmp, etc. I ended up excluding it from autoprotect, but perhaps in the process of all that there was another problem. It removed files under c:\windows that uppercut was dropping into place like the cleanup.exe

The device seemed to be fine in 10U when I got it today. I did not do a factory reset before starting the attempt.

How can get the device back operational? I saw something for another LG device about using LG Bridge and repair mode, but really not sure what I did wrong and so far, I'm not finding an exact match for cause/effect.

But if I can't KDZ the 10P image to the device how am I supposed to unbrick it?

Thanks for any help/advice. :o

---------- Post added at 05:34 AM ---------- Previous post was at 04:36 AM ----------

Documenting for posterity, just in case this is helpful to anyone else in a similar situation in the future.

The problem for me was being plugged into one of my front panel (ASMedia) USB 3.1 ports.

The first time I tried plugging up to the Intel USB3.1 port on the I/O shield (of my ASRock OCF X299 board), it worked without a problem. I was able to go back to H91810P and the device is ready for me to proceed.

BTW drivers are latest available I am aware of for both ASMedia (1.16.51.1) and Intel (5.0.4.43) this is is a very fresh (over the last couple days) install of Windows 7 SP1.

So in case it helps anyone, if you are getting 0x2000 errors trying to use LGUP to flash the stock 10P, it is probably worth trying to plug into a different port on a different USB controller.

Onward! :)
[LG V20 Guides, News, & Discussion] cammykool:
i did this a while ago and need to use uppercut to kdz back to stock to take it to tmo. but my download modeis just twrp. how do i get normal DL mode back?
[LG V20 Guides, News, & Discussion] kish9046:
Please refer to lafsploit main thread or....

https://drive.google.com/open?id=1FAT_d8Y_UjLQYOEr8UqaKnACtGV927xj

Boot into twrp

Flash the lafrestore zip

And reboot

This would replace twrp with default laf...

After restoring download mode you can flash stock kdz using uppercut....
[LG V20 Guides, News, & Discussion] TheMighyLoki:
It does not hang it boots, but I just can not seem to get my phone to stay on download mode
[LG V20 Guides, News, & Discussion] kish9046:
What version did you start with and what version are you now? and i believe your bootloader is unlocked now right? Also ensure the oem unlock option inside dev options is ON
[LG V20 Guides, News, & Discussion] TheMighyLoki:
I came from h91810u then back to H91810p using LGUP. OEM is on and now grayed out.
[LG V20 Guides, News, & Discussion] kish9046:
Then your partion could be corrupted..... try flashing the kdz again......
[LG V20 Guides, News, & Discussion] TheMighyLoki:
Flashed three times and same results. I push the volume up and install a USB at the same time and....... black screen. download mode for 1 seconds and then the unlocked boot-loader screen than the Firmware update screen. If I just push the power button it boots all the way just with the unlock boot-loader screen first then it completes.
[LG V20 Guides, News, & Discussion] zornskin:
I really should have documented everything I tried, since a lot is foggy at this point, but I think I bricked my phone.

Got to this part:

git pull

git checkout h918-miscwrte

./step1.sh - but, it said that it failed, but the phone loaded into TWRP.

THE ABOVE COMMAND FLASHES TWRP RECOVERY ONTO YOUR DEVICE.

WAIT AND PULL OUT YOUR DEVICE WHEN IT ASKS TO. ---------It never asked me to pull out device.

INSIDE TWRP RECOVERY. FIRST FORMAT USING WIPE--ADVANCED FORMAT--TYPE yes AND FULL DO A FULL FORMAT, THEN FLASH MAGISK AND THE LATEST TWRP RECOVERY BELOW.

Was able to do this part, but all attempts to Flash Magisk failed with errors. It seemed like TWRP couldn't read the data partition. I tried to mount the data partition - but everything was unmounted except for the SDcard anyway and it wouldn't check the box for the data partition.

Was going to try to do the reflash with uppercut, but it couldn't see the phone anymore, but it was showing as a device in fastboot, on the other hand, it wasn't listed as an adb device. I was going to try to push the h918p KDZ to the sd card, but I'd never done a push operation before.

I figured I'd just power down, and pop the SD card with the the h918p KDZ on it in, and attempt to reflash from twrp.

Eventually I got this "no OS installed are you sure you wish to reboot lg v20" when I went to reboot. I thought about it and figured, "Hey, I should still be able to access fastboot commands, so I'll be fine" - but I don't actually see download mode anymore - I get "your device is corrupt it cannot be trusted".

Anyway. I'm pretty sure the device is dead and the description I'm giving here is pretty trash, but if it rings any bells in anyone's head on something I can try to possibly recover - that would be really great - but I'm not expecting any miracles.

I'd rather recover than have to buy the thing again. Even if it takes a lot of work on my part.
[LG V20 Guides, News, & Discussion] scorpio76r:
I had that happen to me in the beginning too. I think that I held the power up button while inserting the USB cord with the device off. I know that I had tried various button and, USB combo's. The error went away. I had never seen that red triangle error before and, was worried too at the time. I know that this doesn't help you much but, I can almost confirm that your phone is able to be recovered.
[LG V20 Guides, News, & Discussion] zornskin:
I appreciate the positivity, but I'm becoming resigned to the probability that it's not recoverable. The PC does not see the phone in fastboot or adb, LGUP seems to see it as Unknown device at this point and I can only get 2 different screens on it at this point. Either an eternal LG bootscreen or the one that says your phone is corrupt.

Well, those and the hard reset screen.

I was feeling pretty good about the whole process as right up until the 3rd command in FWUL failed as everything had gone so smoothly up until then. It's a really good post with clear instructions. I feel like the device just let me down.
[LG V20 Guides, News, & Discussion] thepm20:
i did upto FWUL but while installing twrp, i m getting following error

kindly help.
[LG V20 Guides, News, & Discussion] scorpio76r:
Hello, I just wanted to ask you a quick question. In your opinion what is the best and, most stable current rom in your opinion?
[LG V20 Guides, News, & Discussion] cnjax:
[MENTION=6350310]thepm20[/MENTION] please stop quoting the OP it's very annoying.
[LG V20 Guides, News, & Discussion] Phoenix591:
Your internet connection had a hiccup. Just try again. And definitely never quote the original post especially if it's long like this one, you just sent the person who wrote the guide a huge notification email that's 90% just his own post.
[LG V20 Guides, News, & Discussion] gavilan2010:
The direction in this guide work perfect i just flash kdz to clean up some stuff and them i follow the guide cant be ez then this. Really guys follow the guide read like i say i just did to my phone and work perfect. Thanks Op
[LG V20 Guides, News, & Discussion] kish9046:
I use alpha as my daily driver with mk2k kernel.....didn't faced any major issues so far.....

tried other custom roms like lineage and rr.... but always ended up with buggy second screen issues.... so returned back to alpha....
[LG V20 Guides, News, & Discussion] kish9046:
You are most welcome.... i didn't developed any of these softwares.... i just compiled the whole process in a single thread to help other newbies.....
[LG V20 Guides, News, & Discussion] scorpio76r:
Cool, it has been my driver also. Do you have access to future updates if any for the alpha? Lol I don't know if I'm blocked or not on telegram but, when I went there to see if any thing was new in the forum, it says that the chat no longer exists.
[LG V20 Guides, News, & Discussion] cnjax:
The alpha omega rom thread is reopened with updates roms and and download links in the OP
[LG V20 Guides, News, & Discussion] kish9046:
here you go..... it is latest alpha with oc issue corrected for h918

https://androidfilehost.com/?w=files&flid=282038
[LG V20 Guides, News, & Discussion] scorpio76r:
?

---------- Post added at 01:01 PM ---------- Previous post was at 12:58 PM ----------

Thank you for the heads up. I just noticed. I didn't think that updates were posted on this site any more. Glad to see that it has been reopened.
[LG V20 Guides, News, & Discussion] thepm20:
I tried a lot but no success. Always get stuck at Unpacking objects 29%. I was in h918u version but saw this xda post so i was very excited, downgraded to h918p and successfully unlocked bootloader but after that i am stuck.

I even tried this step "zacharee/LafSploit HowTo Thingy.md" too but didn't work.

Is there any other way around to flash twrp on my phone?

Pls help :(:(
[LG V20 Guides, News, & Discussion] kish9046:
Did you tried with a different port on your PC and please ensure you follow all the steps exactly as mentioned in the post
[LG V20 Guides, News, & Discussion] jordeste:
Is there any way you could reupload the KDZ please? I clicked the link and an error code came up saying that the file had been "trashed" by it's owner. Thank you!
[LG V20 Guides, News, & Discussion] tenkensword:
Hi, thanks for the answer, just one more question, when trying to flash the .img it asks me to select a partition:

Boot

Recovery

System Image

Modem

Persist

Whoch ons is the right one?
[LG V20 Guides, News, & Discussion] cnjax:
Recovery
[LG V20 Guides, News, & Discussion] tenkensword:
Hi, thanks. With this I finished everything on this guide, whoever, when I start my phone and I'm done with the set up... I see nothing diferent, I see no trace of having a rooted phone or magisk on the phone, am I missing something? What else do I have to install?

And sorry for all the newbie questions, but I don't wanna mess this up
[LG V20 Guides, News, & Discussion] BROKEN1981:
Did you put magisk on your device?

https://xdaforums.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445

You need to flash that in recovery.
[LG V20 Guides, News, & Discussion] kish9046:
Did u flashed twrp and magisk successfully as explained by broken1981? If yes, then you should be having the magisk manager app now...

R u still able to boot to twrp recovery?

And yes it is perfectly okay to ask nooby questions in this thread..... :good:
[LG V20 Guides, News, & Discussion] tenkensword:
Hi, I managed to made it work, the issue was I made that last step in 2 parts, and the second one was messing the frst one (The Magisk part) so I re-made the part of Wipe, Mount, Install Flash, and now everything is just fine. Thank you all for your help
[LG V20 Guides, News, & Discussion] tenkensword:
Something went terribly wrong... a pop up saying "Unforunately, NameOfAnApp has stopped" keeps flooding my screen... to no end... what can I do?
[LG V20 Guides, News, & Discussion] Xizel:
Should be 'exit'. Check inside lglaf.py for reference.
[LG V20 Guides, News, & Discussion] kish9046:
Would you mind telling us the exact error message you are getting.....
[LG V20 Guides, News, & Discussion] knophler:
So... if you were on H91810J (ARB0, correct?), with the intention of running Super V20... would i LGup KDZ to 10P or keep it at 10J before root?

Thanks.
[LG V20 Guides, News, & Discussion] BROKEN1981:
In my opinion, I would just go to 10P seeing it kinda makes life easier. Now for super v20, I don't know if it's abr0 or abr1. If it's abr0 and you are on arb1, it will not work.
[LG V20 Guides, News, & Discussion] theUsualSuspexx:
I'm sure in just missing something simple, I've never had an issue rooting any phone. Bootloader is unlocked, oem unlock & usb debugging both ticked on in dev options, but I only get 1 hash. Any suggestions?
[LG V20 Guides, News, & Discussion] lovemypurps:
question.... how do i get back to 7.1 from 8.1? im n lineage and running h918. an iflashone of the stock rooted images in twrp?
[LG V20 Guides, News, & Discussion] voorhess:
If you already install twrp, use flashable zip from: https://xdaforums.com/v20/development/rom-h91810q-stock-rom-twrp-flashable-zip-t3681312
[LG V20 Guides, News, & Discussion] scorpio76r:
Edit
[LG V20 Guides, News, & Discussion] scorpio76r:
Hello, guys I'm getting this. can someone please be kind enough to let me know exactly what I'm doing wrong. I'm using the 30g persistent mode FWUL on windows 10.
[LG V20 Guides, News, & Discussion] runningnak3d:
You need to have networking up.

-- Brian
[LG V20 Guides, News, & Discussion] scorpio76r:
Please, excuse me for what might be a silly question but, what exactly do you mean. How do I exactly do that?

---------- Post added at 05:08 PM ---------- Previous post was at 05:00 PM ----------

Edit, I guess my coffee didn't kick in yet, I just connected to the wifi
[LG V20 Guides, News, & Discussion] scorpio76r:
For the life of me, I can't get through this, I am getting this error now, please help.
[LG V20 Guides, News, & Discussion] runningnak3d:
ping 8.8.8.8

and see if you get a reply.

You shouldn't have to do this, it should automatically configure you nameservers from the DHCP server built into your WiFI AP, but anyway....

If you do, then

nano /etc/resolv.conf

add a line:

nameserver 8.8.8.8

-- Brian
[LG V20 Guides, News, & Discussion] cnjax:
Check the laf exploit thread, there maybe a working link in the OP
[LG V20 Guides, News, & Discussion] kish9046:
Could anyone share the 10kdz by chance.... seems it was deleted....
[LG V20 Guides, News, & Discussion] QkTreasures:
The only downside to rooting is having to wipe my phone of apps/data, call history/text & pictures. What do you suggest to back everything up ahead of time? Tia Ron. :highfive:
[LG V20 Guides, News, & Discussion] scorpio76r:
I usually just flash the data from a previous nanoid and, it does the trick.
[LG V20 Guides, News, & Discussion] iceman44:
Would be really great.

how about an uber noob guide to install sound mods and installing super-rom on this device would be great and really appreciated by noobs like myself.
[LG V20 Guides, News, & Discussion] scorpio76r:
Just curious, have you tried the alpha rom? I run that as a daily driver with V4A and Atmos. It's good and, stable. Kish himself has even stated that he runs the alpha rom in previous threads.
[LG V20 Guides, News, & Discussion] cnjax:
First this is a root guide for the H918, questions about installation of super rom and sounds mods should be asked in the super rom thread
[LG V20 Guides, News, & Discussion] scorpio76r:
You are completely correct.
[LG V20 Guides, News, & Discussion] iceman44:
i wasnt sure which to choose alpha or super? i worry about the ARB for h918. once im at arb 1 roms can't go to arb 0 roms so was just wondering....
[LG V20 Guides, News, & Discussion] cnjax:
Both those roms are arb1, more than likely your phone is already arb1, so arb0 roms are a no go
[LG V20 Guides, News, & Discussion] BAFLGV20:
Finally got root on my H918. With this method. Just had to thank the dev. and everyone that was involved.
[LG V20 Guides, News, & Discussion] ozking:
thanks dev.

is your method ok on h918 oreo 20f?
[LG V20 Guides, News, & Discussion] scorpio76r:
This method is not for oreo.
[LG V20 Guides, News, & Discussion] BROKEN1981:
Yes, follow all directions of downgrading

Edit

From what I've read, 8.0 is still abr1
[LG V20 Guides, News, & Discussion] bountyman334:
I'm going to see..I think the g6 method would work.. I'm going too see..
[LG V20 Guides, News, & Discussion] BROKEN1981:
This method works.
[LG V20 Guides, News, & Discussion] kakouza:
LGUP error 0x2BC

Hello

please give me some help..LGUP stop at laf step (10%) and gave me error message 0x2BC

and my LG V20 can't strat ..it boot up only on download mode..

I do as you said for downgrade from 10u to 10p..

Please some heeeelp!!!!
[LG V20 Guides, News, & Discussion] kakouza:
It's done!! It was because windows 10

I tried with windows 7 and it's done well
[LG V20 Guides, News, & Discussion] pvaldeben:
up to the Uppercut tool at this step "NOW SELECT UPGRADE AND FLASH"

but since im rolling back or down grading, from Oreo to 10p, do I still select UPGRADE in the uppercut tool ? I'll wait for an answer before I proceed.

Also I did not unlock the bootloader does that matter?

Doing this a windows 7 since windows 10 was giving me trouble installing uppercut, if this helps anyone.
[LG V20 Guides, News, & Discussion] cnjax:
Both of your questions are clearly answered in the detailed instructions in the OP
[LG V20 Guides, News, & Discussion] Vortell:
For kdz it does not matter honestly a good solution might be for you to watch a YouTube video. You do press upgrade though.
[LG V20 Guides, News, & Discussion] KJOM:
Ok, so I'm stuck at the end of part 3. For some reason, my pc will not boot into linux mode via usb stick. It keeps giving me an error saying that the signature is incorrect. Any suggestions?
[LG V20 Guides, News, & Discussion] kish9046:
What os you are on... it worked flawlessly in my win 10 pc.... also i would suggest you to search for a solution in the fwul thread as well.....
[LG V20 Guides, News, & Discussion] alphahere:
Have you turned off secure boot?