Soft bricked my H918 trying to upgrade, need some help. - LG V20 Questions & Answers

I tried to upgrade my H91810j (T-Mobile variant) to 10p using a flashable zip without recovery in it that I got in another thread on here. I made a mistake and wiped /data instead of factory reset and it would only boot into TWRP even after flashing the new file and an old file, I also wiped all my backup files (stupid me) so I've tried everything from flashing kdz and flashing zips but I eventually lost recovery (I can't boot into recovery, twrp or stock) and I couldn't flash it with fastboot because I locked my bootloader (several times unlocking and locking and all of a sudden it no longer wanted to unlock) and LGUP tells me I'm on 10j but I'm told I can't flash anything because of ARB. Now while trying to flash something with LGUP the phone tells me I'm on 10p so I guess I'm incremented. I can't seem to flash twrp.img (renamed to recovery.img) with the modded LGUP.
Is there anything that could be done to save possible root and twrp (if it's still there) or am I just going to have to save my phone by using the stock KDZ to go to 10p or newer rom? I really want root on this even if it's systemless (preferred type). Thanks in advance!

OKay I see, you might have to try to install LG bridge and use the recovery option to install h918 10q but you'll lose root because from what I see is when tried installing 10p it must have overwritten the os and failed to install 10p which means you might be stuck but if you can go into download mode then you might be able to use LG bridge to get into 10q latest os but not root atm. Or try booting into download mode and then try flashing 10j kdz

dudeawsome said:
OKay I see, you might have to try to install LG bridge and use the recovery option to install h918 10q but you'll lose root because from what I see is when tried installing 10p it must have overwritten the os and failed to install 10p which means you might be stuck but if you can go into download mode then you might be able to use LG bridge to get into 10q latest os but not root atm. Or try booting into download mode and then try flashing 10j kdz
Click to expand...
Click to collapse
Could I just use LGUP and the KDZ?

itsmekeoni said:
Could I just use LGUP and the KDZ?
Click to expand...
Click to collapse
you could

dudeawsome said:
you could
Click to expand...
Click to collapse
Thanks for taking the time to help me out. I just used LGUP and a 10p KDZ to flash it back to OEM stock, I'm hoping that by sticking with the older version someone may find root sooner or later.

itsmekeoni said:
Thanks for taking the time to help me out. I just used LGUP and a 10p KDZ to flash it back to OEM stock, I'm hoping that by sticking with the older version someone may find root sooner or later.
Click to expand...
Click to collapse
yeah no problem, Also If we get root working on 10p that means it'll work on the latest version too as nothing has changed

Related

Couple Questions About H918

So I recently got the LG V20, H91810J specifically, I have a couple of questions:
Q1: If I see a rooting guide for H918, does that work for all H918 variants? (Like the H91810J ?)
Q2: Can I update the phone and still be able to root/install TWRP?
Q3: If I can't update the phone and root/install TWRP, can I update the phone after It's been rooted?
Q4: Anyone have a good guide for rooting/installing TWRP? (Did a search earlier and found mixed results, not sure which would be safest/easiest)
Thanks.
1. Rooting guide only works for firmware up through 10j. 10k can be rolled back to 10j using KDZ tools, but 10p can't because of the anti-rollback.
2. No. If you update to the latest 10p firmware, you're stuck and can't roll back.
3. Yes and no. If you update via OTA, it will wipe out root and custom recovery and you'll be stuck on 10p with no way to go back. Modified versions of the updates that will preserve custom recovery can be downloaded and flashed manually via twrp: https://forum.xda-developers.com/v20/development/rom-10p-debloated-rom-beta-flashable-zip-t3656616
4. https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594/
eric.clay42 said:
1. Rooting guide only works for firmware up through 10j. 10k can be rolled back to 10j using KDZ tools, but 10p can't because of the anti-rollback.
2. No. If you update to the latest 10p firmware, you're stuck and can't roll back.
3. Yes and no. If you update via OTA, it will wipe out root and custom recovery and you'll be stuck on 10p with no way to go back. Modified versions of the updates that will preserve custom recovery can be downloaded and flashed manually via twrp: https://forum.xda-developers.com/v20/development/rom-10p-debloated-rom-beta-flashable-zip-t3656616
4. https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594/
Click to expand...
Click to collapse
Thanks, sometimes I get impatient and I was really tempted to update lol, glad I didn't.
WheresTheDamnSignInButton said:
Thanks, sometimes I get impatient and I was really tempted to update lol, glad I didn't.
Click to expand...
Click to collapse
I'm thinking about rooting my V20 as well. Let me know how it goes for you.
Sent from my LG-H918 using Tapatalk
There is one more catch with updating after TWRP to 10p+. It is currently impossible to use an older firmware on the device. You wouldn't think that's a big deal, unless you end up having a problem that requires a stock restore. Now you have an un-rootable firmware you can't roll back to an older one to root with. If root/AOSP is important to you, don't install 10p.
To be clear, attempting to roll a 10p device back to an older bootloader hard bricks the device at present. The 10p bootloader will not boot older firmware.
Note that you must have root to flash anything other than signed stock firmware. It's not like a Nexus where you can use fastboot to write things without root.
Everything went smoothly, just a couple things to note:
I haven't rooted in a VERY long time (last was the Galaxy Note 3) so I completely forgot that USB debugging needs to be enabled for ADB (The guide didn't specify this, so I spent a good 2 hours trying to figure out the problem)
When I first booted into Recovery, it asked for a password to decrypt the data (Again, the guide didn't specify anything about this screen, so I just hit cancel, everything worked out)
When I went to make a backup, it failed near the end (Reason unknown, perhaps not enough space? Will try again later)
Also anyone know If it's possible to install xposed? I can live without it but It'd be nice to have it.

Returning to Stock

I just got this phone and I'm debating on unlocking the bootloader and rooting it and I was just curious if in the future I need to return it to stock (especially for selling it in the future) how do you go about doing that? Do you just flash one of the stock firmwares though TWRP like I found here? http://downloads.codefi.re/autoprime/LG/LG_G6/US997/US997-USA/US99714a
Then what do you do if that is correct? Also how do you relock the bootloader? I'm sorry if these are noob questions but I have been out of the modding game for a good while.
pwnerman said:
I just got this phone and I'm debating on unlocking the bootloader and rooting it and I was just curious if in the future I need to return it to stock (especially for selling it in the future) how do you go about doing that? Do you just flash one of the stock firmwares though TWRP like I found here? http://downloads.codefi.re/autoprime/LG/LG_G6/US997/US997-USA/US99714a
Then what do you do if that is correct? Also how do you relock the bootloader? I'm sorry if these are noob questions but I have been out of the modding game for a good while.
Click to expand...
Click to collapse
Just flash a kdz trough LGup and the phone will be completely stock, no twrp and no root. Then you have to only lock the bootloader by typing "fastboot oem lock". Don't run this command while you have twrp and root!
Ah, and the fact you have relocked the bootloader doesn't mean that you recovered the manufacturer warranty, LG can easily verify if you used the unlock bin.
Killua96 said:
Just flash a kdz trough LGup and the phone will be completely stock, no twrp and no root. Then you have to only lock the bootloader by typing "fastboot oem lock". Don't run this command while you have twrp and root!
Ah, and the fact you have relocked the bootloader doesn't mean that you recovered the manufacturer warranty, LG can easily verify if you used the unlock bin.
Click to expand...
Click to collapse
What exactly is LGup? Thanks
Sent from my XT1575 using Tapatalk
pwnerman said:
What exactly is LGup? Thanks
Click to expand...
Click to collapse
Is a tool that allows firmware flashing on last lg devices.
Killua96 said:
Is a tool that allows firmware flashing on last lg devices.
Click to expand...
Click to collapse
I did some searching and found this. Is it the correct thing? http://rootmygalaxy.net/download-latest-lgup-tool-for-lg-devices-flash-tool/
Also just to be clear I unlock my bootloader, install TWRP and root the phone. If I ever want to go back to stock for selling the phone or whatever I just download the latest KDZ file like I linked to above and then I flash it to the phone and it will return everything back to stock? Then after that you just do the relock command and the bootloader is closed again?
I appreciate your help. I just to be super clear.
pwnerman said:
I did some searching and found this. Is it the correct thing? http://rootmygalaxy.net/download-latest-lgup-tool-for-lg-devices-flash-tool/
Also just to be clear I unlock my bootloader, install TWRP and root the phone. If I ever want to go back to stock for selling the phone or whatever I just download the latest KDZ file like I linked to above and then I flash it to the phone and it will return everything back to stock? Then after that you just do the relock command and the bootloader is closed again?
I appreciate your help. I just to be super clear.
Click to expand...
Click to collapse
Pretty much yes, search for uppercut if you have driver problems with LGup, and for firmwares this is the best site to download them: https://lg-firmwares.com/lg-h870-firmwares/
Killua96 said:
Pretty much yes, search for uppercut if you have driver problems with LGup, and for firmwares this is the best site to download them: https://lg-firmwares.com/lg-h870-firmwares/
Click to expand...
Click to collapse
I have the US997 model but I found them on the site you linked to so thank you for the help
pwnerman said:
I have the US997 model but I found them on the site you linked to so thank you for the help
Click to expand...
Click to collapse
Ok then
LGUP
Hi, so I started flashing the kdz on my LG G6 using LGUP and it starts, but then randomly quits out. It's recognising my device and the file is definitely the correct one. Any hints as to why it's not working?
EDIT: I managed to fix it, apparently Windows Defender was seeing Uppercut as a virus and stopping it from creating the files it needed to. So make sure you turn off Windows Defender when you do this.
My experience with returning phone to stock is bad. First unlocked bootloader, installed twrp, bootloader for havoc ROM and ROM itself..
Havoc 3.1 OK, but BT calling not working, so I decide go back to stock.
LGUP used without problem, but then camera neither flash ligh doesnt work anymore.
Last firmware for H870 used from official.
Have someone same shi t experience like me?
Trying everything, but no success.
So its not easy go back to stock again..
(My phone is H870 for EU)
bobafel said:
My experience with returning phone to stock is bad. First unlocked bootloader, installed twrp, bootloader for havoc ROM and ROM itself..
Havoc 3.1 OK, but BT calling not working, so I decide go back to stock.
LGUP used without problem, but then camera neither flash ligh doesnt work anymore.
Last firmware for H870 used from official.
Have someone same shi t experience like me?
Trying everything, but no success.
So its not easy go back to stock again..
(My phone is H870 for EU)
Click to expand...
Click to collapse
It's a known problem, the A10 ROMs somehow mess with files needed for stock camera that aren't included in stock pie.
You have to flash Oreo bootloader and then 30b zip for the camera to work.
If that doesn't work flash Oreo kdz and update to Pie.
grushnickij said:
It's a known problem, the A10 ROMs somehow mess with files needed for stock camera that aren't included in stock pie.
You have to flash Oreo bootloader and then 30b zip for the camera to work.
If that doesn't work flash Oreo kdz and update to Pie.
Click to expand...
Click to collapse
Problem finally solved!
Tried many times flash Oreo bootloader and then 30b(pie), 20a (oreo). With 30b everythings work except camera. With oreo 20a phone wasnt even bootup normally.. (after reset just screen with green android and message "No commands" appear. I used LG UP 1.14 with Uppercut.
Then after many unsuccesses I put phone to state where bootloop appeared and I thought about to throw it into garbage.
ADB shell and TWRP saved me... I was again able flash roms.
At the end I found some package with LG UP 1.14 and patch (so I could use it without Uppercut...there is a new LGUP_common DLL), and with this combination flash procedure worked smoothly.
BUT! I had to load nougat stock rom first (H87011i_00_OPEN_EU_OP_0108.kdz), which fix partitions in phone somehow (but there wasnt possibility upgrade higher). Everything, camera included was working with this rom..
Then I flash oreo stock rom (H87020a_00_OPEN_EU_OP_0423.kdz), and now It booted right (no "no command" during startup). Phone worked perfectly, and I used OTA upgrade to land on 30b pie last official update.. tadaaa
Hope it will help others with same problem..

how to root +recovery H83020M

help me how to root+recovery Lg g5 H83020M
What is anti- roll back version in 20M?
nguyenvantuc said:
help me how to root+recovery Lg g5 H83020M
Click to expand...
Click to collapse
same here..i have tried lg up with uppercut but nothing. i have tried using 20a kdz but i get anti rollback error
i had my lg g3 rooted running fulmics and was hoping to get the dame for my g5 but no....help!!
That's bad news Refrain from updating to 20M and later without a custom recovery for now.
help me!
dksoni411 said:
What is anti- roll back version in 20M?
Click to expand...
Click to collapse
help me how to root + recovery h83020m
I just did it on mine the other day. I didn't realize that having an unlocked bootloader didn't automatically mean fastboot flashing would work, so I upgraded to 20m before I started the unlock and root process.
Starting from 20m, I:
1. Downgraded to 20l using LG UP + Uppercut from Autoprimes thread
2. Booted into android and let it do its thing.
3. I then used Uppercut to downgrade to 20a.
4. After I was on 20a, I had issues in android with items crashing, but no big deal... I was now able to use autorecowvery to install twrp.
5. Once I had twrp, I flashed the complete 20l zip from Autoprimes thread to get back to 20l, wiped data to get rid of the crashing issues, made sure I deleted the "recovery-fromboot.p" file, and then flashed magisk also.
6. Rebooted into a rooted 20l rom and continued on.
I will try then report back,thanks.
jobelaa said:
I will try then report back,thanks.
Click to expand...
Click to collapse
Have you had a chance to try it?
To be honest no, time is against me, but still i cant afford to brick my device right now.. if only he would provide us with a video and step by step.but when or if i do i will post
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da_reeseboy said:
I just did it on mine the other day. I didn't realize that having an unlocked bootloader didn't automatically mean fastboot flashing would work, so I upgraded to 20m before I started the unlock and root process.
Starting from 20m, I:
1. Downgraded to 20l using LG UP + Uppercut from Autoprimes thread
2. Booted into android and let it do its thing.
3. I then used Uppercut to downgrade to 20a.
4. After I was on 20a, I had issues in android with items crashing, but no big deal... I was now able to use autorecowvery to install twrp.
5. Once I had twrp, I flashed the complete 20l zip from Autoprimes thread to get back to 20l, wiped data to get rid of the crashing issues, made sure I deleted the "recovery-fromboot.p" file, and then flashed magisk also.
6. Rebooted into a rooted 20l rom and continued on.
Click to expand...
Click to collapse
Those steps are right to perform the downgrade. If someone is interested in testing the new firmware from tmobile (h83020M), I have created a beta version of my Nimax Rom which has root, xposed and is compatible with asgard kernel.
cesarandres_8911 said:
Those steps are right to perform the downgrade. If someone is interested in testing the new firmware from tmobile (h83020M), I have created a beta version of my Nimax Rom which has root, xposed and is compatible with asgard kernel.
Click to expand...
Click to collapse
Where is your rom?
da_reeseboy said:
Where is your rom?
Click to expand...
Click to collapse
Hello, I'm correcting some details and I could create an independent thread the other week if I have some time.
da_reeseboy said:
I just did it on mine the other day. I didn't realize that having an unlocked bootloader didn't automatically mean fastboot flashing would work, so I upgraded to 20m before I started the unlock and root process.
Starting from 20m, I:
1. Downgraded to 20l using LG UP + Uppercut from Autoprimes thread
2. Booted into android and let it do its thing.
3. I then used Uppercut to downgrade to 20a.
4. After I was on 20a, I had issues in android with items crashing, but no big deal... I was now able to use autorecowvery to install twrp.
5. Once I had twrp, I flashed the complete 20l zip from Autoprimes thread to get back to 20l, wiped data to get rid of the crashing issues, made sure I deleted the "recovery-fromboot.p" file, and then flashed magisk also.
6. Rebooted into a rooted 20l rom and continued on.
Click to expand...
Click to collapse
this works pretty well, i rooted my tmobile g5 with no problems. after you follow the above quote just head to this link and follow as well, but dont use the latest twrp, use twrp 3.0.2..flawless https://forum.xda-developers.com/tmobile-lg-g5/how-to/guide-root-twrp-lg-g5-using-t3580264
da_reeseboy said:
Where is your rom?
Click to expand...
Click to collapse
As I mentioned earlier, a beta is already available:
https://forum.xda-developers.com/lg-g5/development/rom-nimax-rom-1-0-h830-h850-t3710841
I now have H830 20m update zips Here.
I have completely stock Tmobile LG G5 with H83020M. I've avoided letting H83020N install so I can preserve the possibility of rootingby rollling back to 20A.
It's been officially sim-unlocked by Tmobile and I use it with ATT, and that's my question, will I lose that during rollback ? Since the imei is in Tmobile's database now I hope it wouldn't ?
semifast said:
I have completely stock Tmobile LG G5 with H83020M. I've avoided letting H83020N install so I can preserve the possibility of rootingby rollling back to 20A.
It's been officially sim-unlocked by Tmobile and I use it with ATT, and that's my question, will I lose that during rollback ? Since the imei is in Tmobile's database now I hope it wouldn't ?
Click to expand...
Click to collapse
No,u wont lose sim-unlocked status.

Stock Recovery .img

I have twrp installed on a T-mobile h918 lg v20. I ended up selling my v20 to my grandpa. It works fine, but he tried to take an ota and it got stuck in a twrp bootloop. I reflashed twrp recovery and the phone is working fine again, but it still wants to install the OTA.
I realize once I install the stock recovery.img it will be impossible to get twrp again, but my grandpa will be using the phone for the next few years, and I'd rather it be able to get system updates.
Does anyone have a stock recovery.img for the tmobile LG V20? I'd like the one from the 10q build if possible (that's what the phone is currently running), but I don't know how often the recovery.img actually gets updated so an older/newer stock recovery.img might work as well.
I understand I can use a whole kdz to flash the whole thing to stock, but the rest of the phone is already stock, and I'd rather not risk losing installed apps and stuff or making them unstable. I just want to flash the stock recovery.img in twrp.
Thanks in advance!
I can't post it for you today, but if you can wait till tomorrow, I will send you a link.
steven_computer_guy said:
I have twrp installed on a T-mobile h918 lg v20. I ended up selling my v20 to my grandpa. It works fine, but he tried to take an ota and it got stuck in a twrp bootloop. I reflashed twrp recovery and the phone is working fine again, but it still wants to install the OTA.
I realize once I install the stock recovery.img it will be impossible to get twrp again, but my grandpa will be using the phone for the next few years, and I'd rather it be able to get system updates.
Does anyone have a stock recovery.img for the tmobile LG V20? I'd like the one from the 10q build if possible (that's what the phone is currently running), but I don't know how often the recovery.img actually gets updated so an older/newer stock recovery.img might work as well.
I understand I can use a whole kdz to flash the whole thing to stock, but the rest of the phone is already stock, and I'd rather not risk losing installed apps and stuff or making them unstable. I just want to flash the stock recovery.img in twrp.
Thanks in advance!
Click to expand...
Click to collapse
If you don't want to wait you can just extract it yourself from stock rom
Thanks! I extracted a rom zip I found on xda but it has a recoverybak.bin, can I just rename the .bin file to an img file? I also downloaded the kdz and attempted to extract it, I tried the ext2 partition tool for Windows but I wasn't able to extract it. If someone could tell me how to extract the kdz that works too. Thank you so much both of you for the quick responses!
runningnak3d said:
I can't post it for you today, but if you can wait till tomorrow, I will send you a link.
Click to expand...
Click to collapse
That would be awesome! I can totally wait for a day or two. I will be awaiting your link. Thank you!
Still_living714 said:
If you don't want to wait you can just extract it yourself from stock rom
Click to expand...
Click to collapse
I am having difficulty extracting the kdz. Any tips?
steven_computer_guy said:
I am having difficulty extracting the kdz. Any tips?
Click to expand...
Click to collapse
Check pm
Ended up flashing the whole KDZ because I couldn't obtain the img file. Thanks to everyone who tried to help out. Everything is good now.

Rooting lg g3 d885 MM

Device used to run fulmics before but now it is on stock MM. I'd really like to try /e/ os but can't unlock bootloader since there is no enable oem unlocking option and I think it would anyway need an unlock code no longer provided? I tried using kingroot older version, that got me root for a while, so I tried installing twrp with official twrp app. It failed, now there is neither twrp nor stock recovery. Desperately I tried newer version of kingroot, which has basically infected my phone, can't uninstall it. Stumproot claims phone is rooted.
Would one click root work better on older android version? I tried using flash tool 2014 to downgrade, cse flash complains about something missing, can't remember what it was, then tried several KDZs on windows 7 usb2, it gets me little further but fails at 4%. Getting rid of kingroot would be nice even if the device is impossible to root. Help would be greatly appreciated. It is still even today a great phone and I would hate to throw it away.
You need to downgrade to KitKat and root using purpledrake I think it's called. Then flash TWRP with the app.
VortexHD said:
You need to downgrade to KitKat and root using purpledrake I think it's called. Then flash TWRP with the app.
Click to expand...
Click to collapse
Well that suck, since lgup says unrecognized model, flash tool 2014 fails at 4% (I have tried installing dlls) and other lg flash tools need some login. I have spent hours on this and I'm going crazy. Is there any other flash tool I could use?
Kingroot roots now but it isn't permanent, I try to reflash twrp but it fails. Does succesful flash require permanent root?
turmelus1 said:
Well that suck, since lgup says unrecognized model, flash tool 2014 fails at 4% (I have tried installing dlls) and other lg flash tools need some login. I have spent hours on this and I'm going crazy. Is there any other flash tool I could use?
Kingroot roots now but it isn't permanent, I try to reflash twrp but it fails. Does succesful flash require permanent root?
Click to expand...
Click to collapse
You could try going from a temporary root to permanent by downloading an older version of magisk that is compatible with your version of Android and using it to root.
You need LGUP (which is newer than "Flash Tool") to downgrade from MM to KK. Then you can use "One Click Root" or the likes to root and flash a suitable (= bumped) TWRP to Recovery. It's all described here and elsewhere on the net. (I learned it that way, too.) Do not try to fiddle around with MM--the MM bootloader will just throw an error if you try to boot anything but the original LG-signed images, and the MM modem will not load with older bootloaders.
macgyver77 said:
You need LGUP (which is newer than "Flash Tool") to downgrade from MM to KK. Then you can use "One Click Root" or the likes to root and flash a suitable (= bumped) TWRP to Recovery. It's all described here and elsewhere on the net. (I learned it that way, too.) Do not try to fiddle around with MM--the MM bootloader will just throw an error if you try to boot anything but the original LG-signed images, and the MM modem will not load with older bootloaders.
Click to expand...
Click to collapse
Yeah, lgup says unknown model and I have spent hours trying to figure out that too. I tried at least lgup with uppercut, didn't work. It is getting harder to search as my head is exploding.
Never mind, I got it to /e/. Had to use autorec for MM, which worked once I got temp root with kingroot. This is how I installed fulmics before, had just forgotten about it. /e/ is very nice but device ram is barely enough. Thanks for trying to help.

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