Probably bricked LG V30, need some help - LG V30 Questions & Answers

Hey there,
it seems like it's a very bad day for me. After some problems with my psyche, which is nothing new, i decided to flash a new ROM. This is what always makes me happy, try out new features and just messing arround with the system. Turns out, today i messed to much but i think it shouldn't... Here's what i did and happend (coming from RR 7.0):
-downloaded Superior OS from https://forum.xda-developers.com/lg-v30/development/post-t3909765
-downloaded the GAPPS package (first time with AROMA)
-moved both files to the SD-Card
-backed up my data, wiped system, dalvik, cache, data, internal storage
-installed the Superior OS zip
-installed the GAPPS zip
This is where it all got messy. The zip didn't finished, it stopped after 2 seconds and the H930 rebooted directly to recovery. There was no screen with the LG standard boot screen, it went straight to recovery. I rewiped everything and i got an error message which said: can't wipe data partition because device or resource is busy. I tried to repair it via wipe > advanced > selecting data > change or repair filesystem and tried to resize, repair and change file system. it always returns the error that it can't mount the partition. After the script, TWRP returns script succeeded, but fails to mount /data.
If i try to install RR 7.0, the script returns E3004: This package is for device : v30,joan,h930; this device is .
After all, i can't restore the backup i had from AOSP extended. I tried to flash the following two files TWRP-JOAN_H930_OPEN_EU-21w.zip and H93020R(TWRP).zip which started with the error E: Legacy property environment did not initialize succesfully. Properties may not be detected.
TWRP Version: 3.2.3-7
I would appreciate any help on this topic, even if i'm one of the xda profits who don't really gives a thank to the threads an just tries out until my devices work as i want them to do (i'm just honest). It's not because i don't appreciate the work of the dev's, they do really nice work which deffinetly is too much for myself to do. I'm just a messy person when it comes to interpersonal relationships. I'm sorry for my kind of awkward english, that's how i am...
I don't have a lot of knowledge about programming itself but i know how to use adb and fastboot, since i had some issues with my HTC one M7 on which i wasn't able to restore the IMEI due to too much messing arround. I think i started a thread about it, but i got it replaced even with a custom rom installed for free which will be my driver for the next couple days.
Kind regards
mrstupidus

I'm still new to this phone but, can you use LGUP to reinstall stock. Then just start over.
Sent from my LG-US998 using Tapatalk

Thanks for the reply,
i would if I could access download mode (forgot to mention it), seems like i'm not able to since the device only boots to recovery, the LG V30 bootscreen never shows up.
It seems like my device data is corrupted or lost, since different scripts in TWRP report that I have no device number. Also if I shut down the device trough TWRP, it boots to TWRP again and makes no attempt to shut down. I haven't tried to access download mode, I had to go to bed for work today. I still have to go tomorrow but one night without sleep will be worth it.
As far as I remember I have a backup of my EFS lying around, I will try to flash it this evening. I'll keep you guys updated if I find a way to get my v30 working, since it could help others too.
Regards
mrstupidus

mrstupidus said:
Thanks for the reply,
i would if I could access download mode (forgot to mention it), seems like i'm not able to since the device only boots to recovery, the LG V30 bootscreen never shows up.
It seems like my device data is corrupted or lost, since different scripts in TWRP report that I have no device number. Also if I shut down the device trough TWRP, it boots to TWRP again and makes no attempt to shut down. I haven't tried to access download mode, I had to go to bed for work today. I still have to go tomorrow but one night without sleep will be worth it.
As far as I remember I have a backup of my EFS lying around, I will try to flash it this evening. I'll keep you guys updated if I find a way to get my v30 working, since it could help others too.
Regards
mrstupidus
Click to expand...
Click to collapse
Have you tried going into download mode manually with the hardware buttons?
Press and hold the Volume Up key on your LG V30.
While still holding this button connect your phone to the USB cord on your computer.
The download mode should now be displayed on your device.
You can release the Volume Up key and resume the update / downgrade operation.
Click to expand...
Click to collapse

You are going to have to have to flash boot and system via fastboot:
* Download the ROM you want to flash and extract it. It will have boot.img or boot.image ... boot.something (depends on the ROM), and system.SOMETHING.
* Open an elevated command prompt in the directory you extracted the ROM in.
* From TWRP choose reboot / bootloader. If it wants to be a PITA and reboot back to TWRP, then you will have to wait till the phone dies and then use the vol down + plug in the USB cable method
* In the command prompt type:
Code:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot boot boot.img
Obviously replace boot.img and system.img with the names of the boot and system files.
To solve your /data issue (and you might want to do this first actually):
While in TWRP
Code:
adb shell
umount /data
umount /sdcard
mkfs.ext2 /dev/block/bootdevice/by-name/userdata
Repeat those two umount, and that is umount NOT unmount, until you get an error. If it isn't unmounted, when you try to format it, mkfs.ext2 will throw an error.
-- Brian

runningnak3d said:
You are going to have to have to flash boot and system via fastboot:
* Download the ROM you want to flash and extract it. It will have boot.img or boot.image ... boot.something (depends on the ROM), and system.SOMETHING.
* Open an elevated command prompt in the directory you extracted the ROM in.
* From TWRP choose reboot / bootloader. If it wants to be a PITA and reboot back to TWRP, then you will have to wait till the phone dies and then use the vol down + plug in the USB cable method
* In the command prompt type:
Code:
Code:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot boot boot.img
Obviously replace boot.img and system.img with the names of the boot and system files.
To solve your /data issue (and you might want to do this first actually):
While in TWRP
Code:
Code:
adb shell
umount /data
umount /sdcard
mkfs.ext2 /dev/block/bootdevice/by-name/userdata
Repeat those two umount, and that is umount NOT unmount, until you get an error. If it isn't unmounted, when you try to format it, mkfs.ext2 will throw an error.
-- Brian
Click to expand...
Click to collapse
Thank's a lot for you're efforts, it turned out that i didn't needed to flash the system.img and boot.img
ChazzMatt said:
Have you tried going into download mode manually with the hardware buttons?
Click to expand...
Click to collapse
Thanks a lot too for you're effort's, this really helped me out in a unecpected way
So here's what the issue was: a corrupted Gapps package. It failed to install and was still active in the recovery while the recovery "rebooted" (it just flashed off and started again with no normal boot between, kind of awkward to explain). The Phone itself never really rebooted into recovery, i have no idea how that happened. The /data partition was still in use from the Gapps script, but the script wasn't visible anymore and i was able to use the recovery as normal. So i ended up with an error everytime i tried to install a zip, restore a backup or wiping the /data partition.
Something i forgot yesterday in the spiral my mind was, forcing the phone to shut down via holding the power and volume down button. I then booted to recovery and i was able to wipe the /data partition. I then tried to install RR and the script suceeded with no error, then the Gapps package with AROMA and i was at the same point as yesterday. So forcing the phone to shut down and back to installing RR now without Gapps. I'm now going to install a .KDZ to start from the original firmware, so i can update the whole firmware and then moving on to unlock the bootloader and install TWRP and a rom with the working Gapps package i have
Thank's a lot for the help
Regards Simon
PS: I hope i will be more focused the next time i encounter issues with my phone and myself, this thread probably put's me in the place i deserve :silly:

That's crazy, I made the exact same mistake you did just now and I was just about stumped on what to do.
Thanks for saving me from a small panic attack, the Power + Vol (-) did the trick.

i tried to convert my sprint v30 to h930 and worked but since i didnt get signal decided to convert to us998 but know it dosent relock the bootloader and when i reflash our restore it gets to setup menú and reboot… i can enter download,fastboot and recovery but dont seem to stop it from rebooting..i dindt want to start a new thread.help please

dami00976 said:
i tried to convert my sprint v30 to h930 and worked but since i didnt get signal decided to convert to us998 but know it dosent relock the bootloader and when i reflash our restore it gets to setup menú and reboot… i can enter download,fastboot and recovery but dont seem to stop it from rebooting..i dindt want to start a new thread.help please
Click to expand...
Click to collapse
It'd be better if you provided the roms and versions you were using.
In between tho, try flashing the last US998 rom you used again but in refurbish mode instead of DL. I had an almost similar bootlooping issue last night and 2nd refurb flash got it to stop.

dami00976 said:
i tried to convert my sprint v30 to h930 and worked but since i didnt get signal decided to convert to us998 but know it dosent relock the bootloader and when i reflash our restore it gets to setup menú and reboot… i can enter download,fastboot and recovery but dont seem to stop it from rebooting..i dindt want to start a new thread.help please
Click to expand...
Click to collapse
Why would you try to convert LS998 to H930? North America variant should only be cross flashed to other North America variants, when using LGUP. Through LGUP, you can't completely Frankenstein a North American phone to a non-North American phone and at the worst you will have a brick.
You need to read the Frankenstein instructions on how to convert LS998 to US998. You either didn't flash US998 Nougat first or you didn't do the Master Reset step in between Nougat and Oreo:
ChazzMatt said:
FRANKENSTEIN - CONVERTING ANY NORTH AMERICA V30/V30+ (except T-mobile H932) TO US998 OREO
SHORT VERSION:
1) Go into download mode (power off completely, then hold volume up button while plugging in USB cable)
2) THEN open patched LGUP and flash NOUGAT US998 to DL PARTITION. In the pop up box "Select All". Use the attached patched LGUP in this post.
3) Master Reset (post 101)
4) Flash Oreo US998 in LGUP UPGRADE MODE. (Make SURE you are choosing Oreo US998 and not accidentally re-flashing Nougat US998 again!)
(For bootloader unlock purposes, use the US998 KDZ versions with pre-July 2018 security patch: 20a or 20b. You can always update to newer US998 firmware later, AFTER bootloader is unlocked.)
5) DONE.
NOTE: For Canadian H933 to convert to US998, @cre4per says you have to use DL Partition for both stages (Nougat and Oreo KDZ)
Click to expand...
Click to collapse
Those instructions work for all North American variants -- except T-mobile H932 -- but were written specifically with screenshots while me personally doing Sprint LS998.
________
neocyke said:
In between tho, try flashing the last US998 rom you used again but in refurbish mode instead of DL. I had an almost similar bootlooping issue last night and 2nd refurb flash got it to stop.
Click to expand...
Click to collapse
Refurbish has its uses. But to be honest I think you just didn't follow the Frankenstein directions. Master Reset stabilizes the bootlooping when flashing US998 Nougat before then flashing US998 Oreo. Has worked for everyone for over a year.
Unless the phone you got which you said was already Chinese Frankensteined was messed up due to whatever they did to it.

ChazzMatt said:
Refurbish has its uses. But to be honest I think you just didn't follow the Frankenstein directions. Master Reset stabilizes the bootlooping when flashing US998 Nougat before then flashing US998 Oreo. Has worked for everyone for over a year.
Unless the phone you got which you said was already Chinese Frankensteined was messed up due to whatever they did to it.
Click to expand...
Click to collapse
Honestly, i gots no idea how they did it and didn't really care at that point. Just needed to get the phone working again.
I actually did the master reset. Several times in fact. Never worked once. Longest it'd hold is for me to input wifi pw. It was the only other thing i could get to other than download mode.. I got the refurb step from either this or the WTF thread. Someone else had the same problem and refurb was their fix. Just so happens same for mine.. So, yeah..

I figured it out,but bricked that one lucky I have a spare and I didn't brick that one....but it wasn't de lg up our software. Through the process of reverting electricity went off in the process of flash and now is on black screen oh well

Is there a way to fix the bricked LG v30?

Related

Soft bricked H930 - help!

My attempt to root my H930 went very wrong... So I started by unlocking the bootloader and flashing TWRP. After that I didn't manage to get in to TWRP. Instead it started to boot, but froze eventually. Now I can't get it to boot (It gets stuck on initial LG V30 screen), and I can't power it off. I can get into stock recovery (apparently it got far enough to replace TWRP) and download mode with hardware button combinations. But the download mode seems to be different from fastboot mode (looks different on phone, and fastboot can't find it) so I can't try to flash TWRP again. I also managed to get it into a check IMEI + S/N mode by holding all buttons at once...
I've tried flashing H93010f_00_OPEN_EU_OP_0925.kdz with LG UP/Uppercut (since I can get to download mode). It went fine but the situation is the same - no boot, no way to power off.
A factory reset from stock recovery doesn't help either.
Please advice..
Alright, I acually got in to fastboot mode even though I'm not quite sure how.. I basically first went in to download mode, and then pressed vol down + power to reboot, and ended up in fastboot mode. From there I flashed twrp again. And this time I managed to get in to TWRP. Since I didn't have a working ROM I went ahead and wiped all but external sdcard and tried flashing Boombox. It resulted in an "Error: 1"..
So I tried flashing H93010f_00_OPEN_EU_OP_0925.kdz from LGUP again, and now I'm back to a device that doesn't boot again.
Which root are you trying to flash? TWRP also is in alpha at the very best at this point. Can you extract the KDZ and use fastboot to flash the .img files inside, assuming they have .img files inside of the KDZ?
jcsww said:
Which root are you trying to flash? TWRP also is in alpha at the very best at this point. Can you extract the KDZ and use fastboot to flash the .img files inside, assuming they have .img files inside of the KDZ?
Click to expand...
Click to collapse
I'm not trying to flash any root. I was planning on flashing Magisk but never got that far. At this point I'm just trying to get a working phone. I read about extracing img files from kdz but the tool didn't work in my virtual WinXP machine so I'm trying to fire up a Win10 machine now (I'm on mac).
Meanwhile I tried flashing boot and system from "LGH930GAT-00-V10c-222-01-OCT-12-2017+0.zip" but that resulted in the phone automatically booting into TWRP... That can't be good.
egendomligt said:
I'm not trying to flash any root. I was planning on flashing Magisk but never got that far. At this point I'm just trying to get a working phone. I read about extracing img files from kdz but the tool didn't work in my virtual WinXP machine so I'm trying to fire up a Win10 machine now (I'm on mac).
Meanwhile I tried flashing boot and system from "LGH930GAT-00-V10c-222-01-OCT-12-2017+0.zip" but that resulted in the phone automatically booting into TWRP... That can't be good.
Click to expand...
Click to collapse
With some other phones, like Nexus devices. Flashing older boot images can cause bootloops. I don't know if this is the case with your device but it might be something to consider. Have you tried flashing the complete latest factory image to see if that solves the bootloop?
jcsww said:
With some other phones, like Nexus devices. Flashing older boot images can cause bootloops. I don't know if this is the case with your device but it might be something to consider. Have you tried flashing the complete latest factory image to see if that solves the bootloop?
Click to expand...
Click to collapse
Unfortunately I haven't been able to get able to get a hold of a KDZ other than for 10f. I'd like to try 10v.
I got the extraction tool working in a Win10 box now, and I'm trying to extract boot and system images from the 10f KDZ...
egendomligt said:
Unfortunately I haven't been able to get able to get a hold of a KDZ other than for 10f. I'd like to try 10v.
I got the extraction tool working in a Win10 box now, and I'm trying to extract boot and system images from the 10f KDZ...
Click to expand...
Click to collapse
Best of luck!
Nope, that didn't work either. fastboot threw an error telling me the system image was too big for the partition.. At least the system image from the 10c dump fit properly..
So I guess my best bets right now are to either get a hold of a 10v KDZ, or wait for something flashable through TWRP.. :/
Is there like a lastlog for system boot that would be reachable from TWRP/adb..? It would sure be nice to see whats going wrong...
egendomligt said:
Nope, that didn't work either. fastboot threw an error telling me the system image was too big for the partition.. At least the system image from the 10c dump fit properly..
So I guess my best bets right now are to either get a hold of a 10v KDZ, or wait for something flashable through TWRP.. :/
Is there like a lastlog for system boot that would be reachable from TWRP/adb..? It would sure be nice to see whats going wrong...
Click to expand...
Click to collapse
No clue!
Ok, I got it to boot again!
* I formatted data (not wiped) inTWRP - Not sure if this step was relevant
* Flashed stock recovery/boot/system from a KDZ dump called "LGH930GAT-00-V10c-222-01-OCT-12-2017+0" - found the link in some other thread here
* Rebooted and watched it boot - went in to "Android is upgrading..."-screen - rebooted - then booted normally.
Thanks for the help and a special thanks to @Perkash who helped me out through PM.

Looking for list of partitions on original LG V30

I recently messed up my V30 H933 badly and it'll only boot to TWRP now (not even Download Mode is working), so I'm looking for someone using LG official FW and who'd be willing to run the following command on TWRP on either Nougat or Oreo:
Code:
ls -l /dev/block/bootdevice/by-name
I'm hoping that, with said command output, I'll be able to manually flash some stuff around on my phone that'll get the system booting again. Should I be successful, I'll write down a guide to help people who run into the same problem as well.
Thanks in advance.
From my experience with past snapdragon devices (LG G Pro and OP2) that had that problem: misc partition was corrupted
Flash a kdz (should reset that flag there), or (didnt try this on a V30, but works on a G6, so... i dont guarantee anything, could even brick your device) via terminal (adb or twrp built in):
dd if=/dev/zero of=/dev/block/bootdevice/by-name/misc bs=256 count=1 conv=notrunc
Safer method should be to flash a kdz though...
SGCMarkus said:
From my experience with past snapdragon devices (LG G Pro and OP2) that had that problem: misc partition was corrupted
Flash a kdz (should reset that flag there), or (didnt try this on a V30, but works on a G6, so... i dont guarantee anything, could even brick your device) via terminal (adb or twrp built in):
dd if=/dev/zero of=/dev/block/bootdevice/by-name/misc bs=256 count=1 conv=notrunc
Safer method should be to flash a kdz though...
Click to expand...
Click to collapse
I can't flash a KDZ because the phone won't go to Download Mode, it will only reboot to TWRP.
And I tried that command, it did nothing for me except stopping the phone from booting up when I connected it to USB.
GryphonBR said:
I can't flash a KDZ because the phone won't go to Download Mode, it will only reboot to TWRP.
And I tried that command, it did nothing for me except stopping the phone from booting up when I connected it to USB.
Click to expand...
Click to collapse
If you reboot to TWRP, what happens if you flash a US998 ROM?
Have you tried Master Reset to wipe everything?
ChazzMatt said:
If you reboot to TWRP, what happens if you flash a US998 ROM?
Have you tried Master Reset to wipe everything?
Click to expand...
Click to collapse
How can I flash a US998 ROM (I'm assuming the KDZ) when I can't access Download Mode? And yeah, I tried doing a full wipe and then flashing a couple of different ROMs I found here (Lineage, WETA and Boombox), none worked, I could see under /system that information had been populated, but trouble is that it would seem as though I need to repartition the whole memory and reinstall the system from scratch before it works again.
So, breaking news: found a flashable ZIP that fixed my phone from the ground up. Managed to, luckily, get it back to working.
GryphonBR said:
So, breaking news: found a flashable ZIP that fixed my phone from the ground up. Managed to, luckily, get it back to working.
Click to expand...
Click to collapse
Good!
GryphonBR said:
So, breaking news: found a flashable ZIP that fixed my phone from the ground up. Managed to, luckily, get it back to working.
Click to expand...
Click to collapse
mind sharing where you found the zip? or the zip itself?
Just incase someone in the future has a similar problem
SGCMarkus said:
mind sharing where you found the zip? or the zip itself?
Just incase someone in the future has a similar problem
Click to expand...
Click to collapse
Absolutely! I used the ZIP I found on this thread to reflash the phone to stock ROM; I'm currently trying to get ahold of the guys who created the ZIP in the first place to try and figure out a way to do the same thing for my variant (H933), so I can reflash my phone with TWRP embedded since, apparently, lglaf can't be made to work with the V30 implementation.

Possibly dense question about OEM unlock and magisk flash

EDIT: On a V30 H930 if that matters.
Coming from an S7 Edge and a Jelly Pro (which was fairly open) so my understanding of how LG does things may be off.
If I just want Magisk - not interested in TWRP/custom roms etc.
Can I:
- enable OEM unlock in developer settings (device is encrypted etc)
- use magisk manager to generate a new boot.img
- use fastboot to flash this e.g. fastboot flash boot patched_boot.img
Or am I missing something? (Probably!)
molotov_sh said:
EDIT: On a V30 H930 if that matters.
Coming from an S7 Edge and a Jelly Pro (which was fairly open) so my understanding of how LG does things may be off.
If I just want Magisk - not interested in TWRP/custom roms etc.
Can I:
- enable OEM unlock in developer settings (device is encrypted etc)
- use magisk manager to generate a new boot.img
- use fastboot to flash this e.g. fastboot flash boot patched_boot.img
Or am I missing something? (Probably!)
Click to expand...
Click to collapse
EDIT:
See post #7 below for root on this phone without TWRP.
For root for this phone WITH TWRP, see this post.
ChazzMatt said:
No, what you said won't work. See this thread below.
You need TWRP to root, by the way.
https://forum.xda-developers.com/lg-v30/how-to/wtf-lg-v30-t3790500
Click to expand...
Click to collapse
You don't need TWRP to root (some) other phones with Magisk, hence my original probing question. Originally when I did some poking around this forum I couldn't tell if some of the hackery being used was specifically for network locked phones or for some custom rom needs.
It looks like the subtlety here is that LG doesn't really unlock when you choose OEM unlock, it just lets you then request unlocking from them (or the trick you've linked). What a right pain in the behind.
Thanks for the pointer.
molotov_sh said:
You don't need TWRP to root (some) other phones with Magisk, hence my original probing question. Originally when I did some poking around this forum I couldn't tell if some of the hackery being used was specifically for network locked phones or for some custom rom needs.
It looks like the subtlety here is that LG doesn't really unlock when you choose OEM unlock, it just lets you then request unlocking from them (or the trick you've linked). What a right pain in the behind.
Thanks for the pointer.
Click to expand...
Click to collapse
In my experience, very few phones actually unlock bootloader with simple "OEM unlock". That setting only works if the OEM or carrier wants it to work.
XIAOMI makes you wait TWO months for bootloader unlock:
https://www.xda-developers.com/xiaomi-2-month-wait-unlock-bootloader/
Note I didn't say no phones, I said very few -- compared to the plethora of brands available.
For instance, Motorola makes you request a bootloader unlock code, but Verizon Motorola phones are not eligible.
Sent via open market LG US998 V30/V30+
I'm confused... 10c didn't need TWRP
So I last rooted when I was running 10c on my open market bootloader unlocked US998 V30 (through the official LG method with an LG-generated unlock.bin) and all I had to do was get a boot.img and let Magisk patch it then flash it using adb/fastboot flash.
I have updated to 20d (many thanks ChazzMatt for the KDZ and instructions) and was going to use westwood24's 20d boot.img with Magisk to systemless-ly root again. Since it seems to be asked a lot, I prefer to leave my /data encrypted and never noticed a slowdown without disabling rctd and prefer to have dm-verity on. If there's a way to do that with TWRP and leave stuff encrypted I'm all for it.
Is it no longer possible to flash back a patched boot.img to have just Magisk root and an otherwise completely stock device?
Kakari said:
So I last rooted when I was running 10c on my open market bootloader unlocked US998 V30 (through the official LG method with an LG-generated unlock.bin) and all I had to do was get a boot.img and let Magisk patch it then flash it using adb/fastboot flash.
I have updated to 20d (many thanks ChazzMatt for the KDZ and instructions) and was going to use westwood24's 20d boot.img with Magisk to systemless-ly root again. Since it seems to be asked a lot, I prefer to leave my /data encrypted and never noticed a slowdown without disabling rctd and prefer to have dm-verity on. If there's a way to do that with TWRP and leave stuff encrypted I'm all for it.
Is it no longer possible to flash back a patched boot.img to have just Magisk root and an otherwise completely stock device?
Click to expand...
Click to collapse
You're doing very advanced stuff, and I don't know the answer to that. A developer could give you answers...
I do know I prefer TWRP custom recovery for purposes of having backups. Like having a nifty time machine where you can erase mistakes you make.
TWRP can also let you flash zipped files to install other elements to your phone.
"Stock" recovery is fairly useless in my opinion.
Magisk systemless root without TWRP
ChazzMatt said:
You're doing very advanced stuff, and I don't know the answer to that. A developer could give you answers...
I do know I prefer TWRP custom recovery for purposes of having backups. Like having a nifty time machine where you can erase mistakes you make.
TWRP can also let you flash zipped files to install other elements to your phone.
"Stock" recovery is fairly useless in my opinion.
Click to expand...
Click to collapse
I decided to just 'go for it' again and it still works with Magisk 16 and 17.1 (I didn't dare try 17 with the possible bootloop problems). In the interest of not making something 'advanced' & possibly dangerous too accessible I'll share what I did in broad strokes so molotov_sh and future me can have a rough guide.
The process was:
0. Have an unlocked bootloader (either you have an open market US998 and used the official method or the WTF method)
1. Download the 20d update (what I'm using a newer one will hopefully also work) and the LGUP dev version.
2. Plug in your V30 using a USB2 cable and switch it to File Transfer mode.
3. Open LGUP
4. 'Upgrade' the phone using the KDZ from (1), let it reboot, finish and check that the phone boots, I like throwing in an extra reboot with the phone unplugged from the computer just to be sure. Do any backups of app data, make sure you have 2FA backup codes etc.
5. Reconnect the phone and open LGUP again and choose 'Dump'
5a. It's probably a good idea to dump the whole of your phone excluding 'userdata' just in case. I had a timeout error after about 30-35 minutes but it seemed to get all portions.
6. Choose the 'boot' checkbox for what you want to dump and choose a folder to save it in. The file it dumps is in .img format but does not have a file extension.
7. When its done, unplug the phone, close LGUP, reboot the phone to the regular OS, and plug it back in in file transfer mode.
8. Copy the boot image you dumped in (6) onto the phone, perhaps under Internal SD/Download (I'd add the .img and possibly a version like boot20d.img)
9. Install MagiskManager.
10. Open it, choose Install, Patch Boot Image file, choose the .img file you copied in (8). When its done (without any errors!) you'll have a patched_boot.img file
11. Copy patched_boot.img onto your computer (I like placing it right next to my fastboot executable); you might have to wait a few minutes or restart since the phone can be slow to show newly created files.
12. Unplug your phone & turn it off. Then hold volume down while your plug in the USB cable.
13. Open a terminal/command prompt and navigate to the patched_boot.img file and then run
Code:
fastboot flash boot patched_boot.img
14. It'll take a few tenths of a second and said 'OK'/'Done'. Then enter
Code:
fastboot reboot
and unplug the phone after it starts rebooting. I had mine go through 2 reboot cycles and then it was fine, Magisk works and SafetyNet checks pass.
Recovery is stock and I can have a working hosts file and TitaniumBackup. I use LGBridge for more significant backups.
molotov_sh said:
EDIT: On a V30 H930 if that matters.
Coming from an S7 Edge and a Jelly Pro (which was fairly open) so my understanding of how LG does things may be off.
If I just want Magisk - not interested in TWRP/custom roms etc.
Can I:
- enable OEM unlock in developer settings (device is encrypted etc)
- use magisk manager to generate a new boot.img
- use fastboot to flash this e.g. fastboot flash boot patched_boot.img
Or am I missing something? (Probably!)
Click to expand...
Click to collapse
See @Kakari's post just above this one for root without TWRP, using a patched boot.img.
@Kakari I actually posted a PM to @ChazzMatt about a day after I originally posted here with roughly your procedure (I think he may have seen this thread before that PM). I debated posting it here as I didn't have a clean experience with FOTA 20r to 20y (potential for others to suffer data wipes) - in the end I had to LGUP to go to 20y, see below.
For anyone interested in following my method it will wipe your data.
Let me quote my PM to him here:
Thanks for the pointer the other day
I've used your detailed guides, roms and the rather impressive group discovery thread to come up with a simpler method if you're just after root only and you want the official ROM - "light" root users.
As an aside, I should note that after downgrading to 20r (H930 European here), unlocking the bootloader and hard resetting the FOTA wouldn't bump me to 20y, it'd go through the motions and just wipe the phone each time it rebooted to apply it. So I used LGUP to flash 20y (what I was on before rooting with no updates available) and it's all good for now.
My steps:
- Downgrade to unlockable ROM version using LGUP. EU H930 20r here.
- Flash new_unlock.bin to unlock bootloader in fastboot.
- Hard reset as suggested.
- Flash "latest" official ROM using LGUP. EU H930 20y for me as I wanted what I had originally.
- Get the matching boot image (I pulled boot_6.bin from the 20y kdz)
- Feed to to Magisk Manager's install.
- Flash it in fastboot (fastboot flash boot <patched_boot_6.bin>)
Now I have an entirely stock ROM except for boot, so in theory FOTA capable. Rare use case possibly, but saves TWRP and the funky recovery flashing - which looked like it might also trip safetynet with the LG anti-root stuff (I guessed that might hit system?).
Not sure how FOTA will work going forwards for me, but my hope is that all I'll have to do is reflash a Magisk'ed boot. That'd (hopefully) be the only downside - needing to wait for a boot image to regain root, or (somehow) extract it from the phone.
In reality given my FOTA wipe experience I imagine full backups in advance (titanium in my case, as no twrp) will probably be necessary, just like one should do before flashing any custom ROM or update I suppose. Also as it's a modified boot, if the FOTA does a delta update/verify on it that could get awkward, and would necessitate another trip to LGUP.
Your work on the LG V30 has been invaluable, I hope the above is useful.
Click to expand...
Click to collapse
So yes, I have root with Magisk but no need for TWRP! Thanks for your input anyway, it may help others especially as it has LGUP backup bits.

Sadly might have bricked my H933

Hi guys, dealing with a H933 --> US998.
TL;DR - stuck on LG logo, no download mode, no fastboot, master reset does not work, LGUP (patched or unpatched) doesn't recognize phone, computer doesn't recognize it either.
----
Frankenstein method followed correctly, and had unlocked bootloader + root.
Followed H933 specific steps to install AOSP/Linage ROMS. Attempted to install Lineage 16.0 and flashed Lunar kernel. Booted to animation logo and didn't get past that.
Decided to revert back to stock Pie by flashing one of the US998 kdz's. To be honest with you, I tried a few different ones and everything was working fine (I went from Nougat --> Oreo --> Pie in order to bring myself back to Pie firmware to try Lineage install once more but with stock kernel).
This time, phone wouldn't move past the LG animation (right after the logo).
At this point, I lost access to download mode - but I still had fastboot. Installed TWRP again through fastboot and attempted to flash TWRP-JOAN_H933_CANADA_20i.
Lost unlocked bootloader image - lost access to fastboot and recovery - and still didn't have download mode (it would not pass the original download mode image) and would not be recognized by LGUP (patched or unpatched). The phone would be stuck at LG logo, and keep rebooting.
At that point I decided to try a Master Reset. On the second YES, it would hang, and then go back to the LG logo bootloop. Phone does not get recognized by computer.
I know I messed up in numerous points. I got overzealous and likely didn't pay enough attention. Spent all night trying to resurrect it, but to no avail. Any advice for me? Or is the device fully bricked? :crying:
Greatly appreciate any feedback and assistance. Thank you in advance.
Sorry to hear that. I think you have four options.
1) Reach out on the telegram v30 forum to someone with an Octoplus box to remotely resurrect your device.
2) Send it in for "repair".
3) Do it yourself, see https://forum.xda-developers.com/g4/general/guide-unbrick-via-external-sdcard-qfil-t3748946.
4) Buy a new phone.
The third option isn't hard, but may involve a lot of work so I'd go with the first one.
don"t worry too much, that phone is almost unbrickable, at least you are really unlucky, you will revive it. Wait for @ChazzMatt to give you some help before giving up hope entirely
Meanwhile, I can give you some advice because I was stuck one time on LG Logo, you were on which firmware when it last booted up?
While it is bootlooping, connect it to the pc, do a soft reset with power and volume down buttons, release them when the screen goes black and immediately press the volume up button to access fastboot menu, and if PC doesnt recognize it, shut down the phone by selecting it with volume button.
Deconnecting the phone and press volume down while reconnecting it to the pc to try to go to download mode and kdz your phone.
Somewhat working
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?
Update: Flashed US99820H and back in running order. I still wonder how to get my phone onto Pie while keeping bootloader unlocked and have root, without having the phone get stuck.
Ergo-sum said:
Update: Flashed US99820H and back in running order.
Click to expand...
Click to collapse
Glad you got your phone working again!
Ergo-sum said:
I still wonder how to get my phone onto Pie while keeping bootloader unlocked and have root, without having the phone get stuck.
Click to expand...
Click to collapse
Thoroughly discussed in the US998 Pie KDZ thread. Top of post #2 (one method), all of post #6 (three different workarounds).
If none of the 4 methods work for you, there are no other answers and you have to wait for another US998 Pie KDZ.
I've struggle for a couple days and finally i can flash pie stock rom to my us998. What i did :
1.Refurbish us99820h lgup, boot os
2.flash and boot twrp via fastboot
3.flash magisk,dm verity, rctd, via twrp...format data reboot format data then magisk again
4. Boot OS
5. Boot recovery then shutdown
6. Partition DL h93310h lgup except RECOVERY AND RECOVERYBAK
7. Boot OS .... Once your lg logo appeared ( BEFORE LG ANIMATION ) press and hold vol down + power. Release power and hold it again IMMEDIATELY once you see LG LOGO ( BEFORE LG ANIMATION ) click the "yes" and "yes"
8. You got the twrp
9. Flash us99820e + magisk via twrp , boot up
10. Refurbish us99820h, boot up
11. Do step 2 and 3
12. Boot OS
13. Boot recovery
14. Flash us99830b via twrp then flash magisk
15. Done u should have pie now
What you are describing is Method #3 in post #6 of the US998 KDZ Pie thread.
It's the workaround which has the most success but is also most complicated.
havetolearn said:
I've struggle for a couple days and finally i can flash pie stock rom to my us998. What i did :
1.Refurbish us99820h lgup, boot os
2.flash and boot twrp via fastboot
3.flash magisk,dm verity, rctd, via twrp...format data reboot format data then magisk again
4. Boot OS
5. Boot recovery then shutdown
6. Partition DL h93310h lgup except RECOVERY AND RECOVERYBAK
7. Boot OS .... Once your lg logo appeared ( BEFORE LG ANIMATION ) press and hold vol down + power. Release power and hold it again IMMEDIATELY once you see LG LOGO ( BEFORE LG ANIMATION ) click the "yes" and "yes"
8. You got the twrp
9. Flash us99820e + magisk via twrp , boot up
10. Refurbish us99820h, boot up
11. Do step 2 and 3
12. Boot OS
13. Boot recovery
14. Flash us99830b via twrp then flash magisk
15. Done u should have pie now
Click to expand...
Click to collapse
ChazzMatt said:
What you are describing is Method #3 in post #6 of the US998 KDZ Pie thread.
It's the workaround which has the most success but is also most complicated.
Click to expand...
Click to collapse
I heard that i will got many problem if i flash aosp rom after upgrade to pie.... Can i fix it with that method?
havetolearn said:
I heard that i will got many problem if i flash aosp rom after upgrade to pie.... Can i fix it with that method?
Click to expand...
Click to collapse
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65
ChazzMatt said:
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65
Click to expand...
Click to collapse
Man there are so many broken oreo's firmware after update to pie.... Hmm, i think i will stay at pie because i need lg screen recording feature. It can record screen and system sound together. Thx for replying ChazzMatt
ChazzMatt said:
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65
Click to expand...
Click to collapse
Uhh sorry Chazz.. Can you help me? I found my phone have trouble with wifi... Whenever i try to connect it just told me "saved"
havetolearn said:
Uhh sorry Chazz.. Can you help me? I found my phone have trouble with wifi... Whenever i try to connect it just told me "saved"
Click to expand...
Click to collapse
1) On my backup V30+ which is on stock US998 30b Pie (but doesn't have a SIM card inserted nor even signed into my Google account), it's connected fine to my home Wi-Fi network so I know it's not a stock US998 Pie issue...
2) This happens even on public free Wi-Fi networks? (Here in the U.S. we have McDonalds, Starbucks?) That would give you clue whether it's one particular router or all your phone has problem with. Or possibly problem with the type of encryption you have on your router.
Usually that message means the router is rejecting the device. You just have to figure out why. But is it one router or all?
3) If one particular router, try rebooting the Wi-Fi router itself.
4) Make sure you don't have any kind of router whitelist for certain devices or MAC addresses and your phone is not included. Or that you don't have some older b/g Wi-Fi chipset standard set; this one is not likely but I had that happen for an older Wi-Fi printer when I had "N" or higher set on my router.
5) On the phone, try forgetting the Wi-Fi network and refinding it. Enter in the password again.
6) Almost last, on the phone try the Network Settings Reset. (See screenshot from US998 30b Pie.) It will reset all network settings including Wi-Fi, Bluetooth.
7) Last, try Factory Reset?
In the same boat
Ergo-sum said:
Hi guys, dealing with a H933 --> US998.
TL;DR - stuck on LG logo, no download mode, no fastboot, master reset does not work, LGUP (patched or unpatched) doesn't recognize phone, computer doesn't recognize it either.
----
Frankenstein method followed correctly, and had unlocked bootloader + root.
Followed H933 specific steps to install AOSP/Linage ROMS. Attempted to install Lineage 16.0 and flashed Lunar kernel. Booted to animation logo and didn't get past that.
Decided to revert back to stock Pie by flashing one of the US998 kdz's. To be honest with you, I tried a few different ones and everything was working fine (I went from Nougat --> Oreo --> Pie in order to bring myself back to Pie firmware to try Lineage install once more but with stock kernel).
This time, phone wouldn't move past the LG animation (right after the logo).
At this point, I lost access to download mode - but I still had fastboot. Installed TWRP again through fastboot and attempted to flash TWRP-JOAN_H933_CANADA_20i.
Lost unlocked bootloader image - lost access to fastboot and recovery - and still didn't have download mode (it would not pass the original download mode image) and would not be recognized by LGUP (patched or unpatched). The phone would be stuck at LG logo, and keep rebooting.
At that point I decided to try a Master Reset. On the second YES, it would hang, and then go back to the LG logo bootloop. Phone does not get recognized by computer.
I know I messed up in numerous points. I got overzealous and likely didn't pay enough attention. Spent all night trying to resurrect it, but to no avail. Any advice for me? Or is the device fully bricked? :crying:
Greatly appreciate any feedback and assistance. Thank you in advance.
Click to expand...
Click to collapse
How did you unbrick your phone? I'm in the same boat as you. I can get to the Download mode, but not past the blue dot image. If I try to master reset, the phone just restarts after the second time I select yes. It's been bootlooping like this for a while now. For context, I was on US99820H(dirty flashed via twrp) when I tried to flash H93330k. @ChazzMatt, I know this is a long shot as what I did was incredibly stupid, but is there anyway I can get out of this?
Ergo-sum said:
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?
Click to expand...
Click to collapse
But, how did you do that if you cant (couldnt) access to fastboot or recovery? Im crazy ?
please. help me.
Ergo-sum said:
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?
Click to expand...
Click to collapse
Please help me, I am the same as you. please
phamtuyenk7d said:
Please help me, I am the same as you. please
Click to expand...
Click to collapse
See this post for Recovery of botched US998 30B upgrade:
https://forum.xda-developers.com/showpost.php?p=81728547&postcount=641

Bootloop after failed Pie update. Download mode doesn't work anymore

Previous process:
Started from unlocked H931 Nougat
I'm afraid I actually forgot the precise order... maybe Nougat US998 -> Oreo, maybe Oreo H931 -> US998... Of course using Frankenstein method.
Using WTF..! method unlocked bootloader (I'm pretty sure at some point I also had twrp, and again, may have been prior to US998/Oreo flash... order).
Because of network problems flashed H931 Oreo, 2 years stable.
Current problem:
Flashed US998 Oreo from here: https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99820a040330-kdz-t3786337
Tried flashing US998 PIE from here: https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99830a000704-kdz-t3952256
In LGUP instead of refurbish I clicked partition dl.
Phone was stuck in bootloop. I tried the button dance to Master reset, worked, however the erased system wasn't able to boot before anyway, how would this help I don't know. The bootloop stays.
Hoped to reach familiar Download mode, but couldn't even power the phone off (in no way from across the forum). Opened the phone, disconnected the battery - it's off. Tried to enter download mode... doesn't work. At least it charges. Tried to boot, entered bootloop again, master reset, bootloop again, disconnect battery.
Found this: https://forum.xda-developers.com/lg-v30/help/download-mode-doesnt-anymore-t3973801 , which leads to a possible solution here: https://forum.xda-developers.com/lg-v30/development/rom-fw-lg-v30-joan-us998-30b-twrp-t3973811
I searched the comments, apparent solution was entering master reset menu and clicking yes in the dialog menus, which should start TWRP. I guess I don't have TWRP, because this does nothing much. A screen saying erasing appears, then goes to the same bootloop.
Bootloop, Download mode doesn't work, cannot acces TWRP. (soft brick)
Found no previous solution to work. (possibly couldn't find it)
Is there any help for me? Should I start looking for something less LG?
have you fixed it? Have you unlocked your device's bootloader yet?
If you have unlocked the bootloader then flash the laf.img file
---------- Post added at 05:28 PM ---------- Previous post was at 05:23 PM ----------
If you want to update android 9 us998, please kdz via ROM h93030b to install twrp, then flash us99830b.zip via twrp
give it a try
Unfortunately not yet. Thanks for the tip, but until I find a way to boot anything on the phone, I guess I won't get to flashing.
I think @thao12345 is saying that (1) if your bootloader is unlocked (it must have been if you ever installed TWRP, unless you relocked it) and (2) if you are currently on US998 ROM, then you should have working fastboot flash commands, and you can fix almost anything.
Boot into fastboot from power off by holding Vol- while plugging in the cable. Of course ADB installed on computer. Test with "fastboot devices".
From there you can use "fastboot flash recovery twrp.img" to get TWRP, or "fastboot flash laf laf.img' to fix download mode. I believe laf.img can be found in the TWRP-flashable US998 ROM thread.
Once you have working download mode, the next step is to temporarily flash US998 Nougat using Partition DL and the latest Pie compatible LGUP. This should help clean up the phone.
TheDannemand said:
I think @thao12345 is saying that (1) if your bootloader is unlocked (it must have been if you ever installed TWRP, unless you relocked it) and (2) if you are currently on US998 ROM, then you should have working fastboot flash commands, and you can fix almost anything.
Boot into fastboot from power of by holding Vol- while plugging in the cable. Of course ADB installed on computer. Test with "fastboot devices".
From there you can use "fastboot flash recovery twrp.img" to get TWRP, or "fastboot flash laf laf.img' to fix download mode. I believe laf.img can be found in the TWRP-flashable US998 ROM thread.
Once you have working download mode, the next step is to temporarily flash US998 Nougat using Partition DL and the latest Pie compatible LGUP. This should help clean up the phone.
Click to expand...
Click to collapse
right. If the phone is in us998 or h930, you can flash the laf.img file.
If not in the two modes above but get bricked then you can try the ways to enter "EDL qualcom 9008" mode then rewrite the partition using a tool such as QFIL
---------- Post added at 02:08 AM ---------- Previous post was at 01:56 AM ----------
MarcRossi said:
Previous process:
Started from unlocked H931 Nougat
I'm afraid I actually forgot the precise order... maybe Nougat US998 -> Oreo, maybe Oreo H931 -> US998... Of course using Frankenstein method.
Using WTF..! method unlocked bootloader (I'm pretty sure at some point I also had twrp, and again, may have been prior to US998/Oreo flash... order).
Because of network problems flashed H931 Oreo, 2 years stable.
Current problem:
Flashed US998 Oreo from here: https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99820a040330-kdz-t3786337
Tried flashing US998 PIE from here: https://forum.xda-developers.com/lg-v30/development/us998-lg-v30-us998-us99830a000704-kdz-t3952256
In LGUP instead of refurbish I clicked partition dl.
Phone was stuck in bootloop. I tried the button dance to Master reset, worked, however the erased system wasn't able to boot before anyway, how would this help I don't know. The bootloop stays.
Hoped to reach familiar Download mode, but couldn't even power the phone off (in no way from across the forum). Opened the phone, disconnected the battery - it's off. Tried to enter download mode... doesn't work. At least it charges. Tried to boot, entered bootloop again, master reset, bootloop again, disconnect battery.
Found this: https://forum.xda-developers.com/lg-v30/help/download-mode-doesnt-anymore-t3973801 , which leads to a possible solution here: https://forum.xda-developers.com/lg-v30/development/rom-fw-lg-v30-joan-us998-30b-twrp-t3973811
I searched the comments, apparent solution was entering master reset menu and clicking yes in the dialog menus, which should start TWRP. I guess I don't have TWRP, because this does nothing much. A screen saying erasing appears, then goes to the same bootloop.
Bootloop, Download mode doesn't work, cannot acces TWRP. (soft brick)
Found no previous solution to work. (possibly couldn't find it)
Is there any help for me? Should I start looking for something less LG?
Click to expand...
Click to collapse
Are you having "Now waiting for any connection ..." error in download mode
Thanks guys, I get it now. I'll have to re-learn adb and fastboot, that's no problem I hope. I haven't had time to do it yet, I'll update later.
Are you having "Now waiting for any connection ..." error in download mode
Click to expand...
Click to collapse
I don't have download mode at all, I only have 2 different screens - bootloop (V30/unlocked bootloader logo) or charging screen. I cannot access download mode.
MarcRossi said:
Thanks guys, I get it now. I'll have to re-learn adb and fastboot, that's no problem I hope. I haven't had time to do it yet, I'll update later.
I don't have download mode at all, I only have 2 different screens - bootloop (V30/unlocked bootloader logo) or charging screen. I cannot access download mode.
Click to expand...
Click to collapse
If you can go to twrp recovery, you can go to reinstall the partition
If brick is black then try qualcom 9008 mode to rewrite the partition (I used to succeed this way)
thao12345 said:
have you fixed it? Have you unlocked your device's bootloader yet?
If you have unlocked the bootloader then flash the laf.img file
---------- Post added at 05:28 PM ---------- Previous post was at 05:23 PM ----------
If you want to update android 9 us998, please kdz via ROM h93030b to install twrp, then flash us99830b.zip via twrp
give it a try
Click to expand...
Click to collapse
Yes, you are absolutely right, it works!
Thanks
Redy321 said:
Yes, you are absolutely right, it works!
Thanks
Click to expand...
Click to collapse
Could you tell us a bit more about what you did? Which model V30 do you have? How did you lose download mode? And what steps did you take to repair it?
I'll be honest, I ask because having seen your many posts in various threads here recently, all very similar to the one you posted here -- sharing no real information -- I think you're most likely a bot, trying to build post count before dropping a spam payload.
That is presumptuous on my part and I may be wrong. If so I apologize deeply and will update this post after seeing your response.

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