[VS995] How do I flash US unlocked stock firmware on the Verizon LG V20 without the phone bootlooping? - LG V20 ROMs, Kernels, Recoveries, & Other Developm

Stock US996 twrpable zip firmware for the lg v20 is here. My phone is already rooted with magisk, bootloader unlocked, and has twrp installed.
I formatted my phone using twrp, and rebooted into recovery mode. I then flashed the US99610P firmware (as it is the most up to date in the list at the time). As soon as I reboot into the system, the "phone is corrupt and unable to boot" warning pops up and it's now in an endless bootloop.
I have flashed VS996 12A firmware with lgup patched to get the phone back to a working state.
TLDR: bootlooping lg v20 in part due to the US996 firmware. How do I flash US unlocked stock firmware on this device through twrp?

Flash it with partition DL using patched lg up. You can't just crossflash the vs995 to us996 with twrp due to the different partition layout. And this is not the correct section to post this in.

xxseva44 said:
Flash it with partition DL using patched lg up. And this is not the correct section to post this in.
Click to expand...
Click to collapse
I did. Flashing using lgup patched works fine when on stock firmware. The issue is when I'm rooted and have twrp installed.
This happened as well when flashing custom roms as well.

Kolyei said:
I did. Flashing using lgup patched works fine when on stock firmware. The issue is when I'm rooted and have twrp installed.
This happened as well when flashing custom roms as well.
Click to expand...
Click to collapse
Do you reset afterwards?

Related

Help: security error

I have one LG g3 Ls990 model with Android 5.0.1 and ZVA firmware.
I rooted phone with LG script method without any issue. Rooting successful.
After this I installed twrp with Ls990 autorec lolipop apk.
Then I switch off phone and booted in twrp and made backup of my efs and present stock rom.
But when I again booted phone , it show lg logo and screen written with "Security Error" and then switch off.
Still I am able to boot in twrp and download mode but not able to boot in rom.
Kindly guide me to resolve this issue.
Thanks in advance.
arunkarnwal1981 said:
I have one LG g3 Ls990 model with Android 5.0.1 and ZVA firmware.
I rooted phone with LG script method without any issue. Rooting successful.
After this I installed twrp with Ls990 autorec lolipop apk.
Then I switch off phone and booted in twrp and made backup of my efs and present stock rom.
But when I again booted phone , it show lg logo and screen written with "Security Error" and then switch off.
Still I am able to boot in twrp and download mode but not able to boot in rom.
Kindly guide me to resolve this issue.
Thanks in advance.
Click to expand...
Click to collapse
I don't know if this will help, but it SHOULDN'T hurt either.
http://forum.xda-developers.com/showthread.php?p=57144978
Try flashing it. It's skin1980 sharpening mod, and it bumps the kernel.
Maybe it'll work.
engine95 said:
I don't know if this will help, but it SHOULDN'T hurt either.
http://forum.xda-developers.com/showthread.php?p=57144978
Try flashing it. It's skin1980 sharpening mod, and it bumps the kernel.
Maybe it'll work.
Click to expand...
Click to collapse
not work. but finally i flashed zv4 tot and root it with bump twrp.
now i want to install ZVA or any lollipop rom, so kindly guide me further steps as presently i am on ZV4 with root and bump twrp and also gsm unlocked.
arunkarnwal1981 said:
not work. but finally i flashed zv4 tot and root it with bump twrp.
now i want to install ZVA or any lollipop rom, so kindly guide me further steps as presently i am on ZV4 with root and bump twrp and also gsm unlocked.
Click to expand...
Click to collapse
Boot into twrp and flash "BarpapA" by @engine95
1619415 said:
Boot into twrp and flash "BarpapA" by @engine95
Click to expand...
Click to collapse
can I install cloudy 2.5 in same manner?? or required to flash zv8 modem
arunkarnwal1981 said:
I have one LG g3 Ls990 model with Android 5.0.1 and ZVA firmware.
I rooted phone with LG script method without any issue. Rooting successful.
After this I installed twrp with Ls990 autorec lolipop apk.
Then I switch off phone and booted in twrp and made backup of my efs and present stock rom.
But when I again booted phone , it show lg logo and screen written with "Security Error" and then switch off.
Still I am able to boot in twrp and download mode but not able to boot in rom.
Kindly guide me to resolve this issue.
Thanks in advance.
Click to expand...
Click to collapse
I am in the same place (Security Error) and arrived there via the same steps. I think the only difference is that I am on ZVB firmware.
The firmware difference may explain (or maybe not) why I can boot into TWRP but NOT into download mode.
I'm thinking that if I have TWRP access I should be able to dig myself out of this hole, but not sure how to proceed. I'm guessing that doing a factory reset is not going to fix this, but if that were to return me to stock, that would be great. But I don't want to attempt that without getting some experienced feedback.
If a reset is a no-go, what are my flashing options?
Thanks for any suggestions!
Update & Additional Info: When I'm in TWRP, if I select Reboot and then Bootloader, the Firmware Update screen appears.

OTA Update with unlocked BL, TWRP installed

I have a H850 on V10d. The bootloader is unlocked, TWRP 3.0.2-0 is flashed to the recovery partition and SuperSU 2.78 is installed.
When I try an OTA update, the phone reboots to TWRP. Rebooting from there leaves me with the old firmware.
What is the preferred way to update? Can I use LG Bridge? Or do I have to flash a stock recovery?
bornheim2 said:
I have a H850 on V10d. The bootloader is unlocked, TWRP 3.0.2-0 is flashed to the recovery partition and SuperSU 2.78 is installed.
When I try an OTA update, the phone reboots to TWRP. Rebooting from there leaves me with the old firmware.
What is the preferred way to update? Can I use LG Bridge? Or do I have to flash a stock recovery?
Click to expand...
Click to collapse
Update with LGUp o by flashing firmware zip (if avaible) trough TWRP.
Never do OTA when you are rooted or have a TWRP, there are high possibility to brick in these cases.
so if i have an unlocked bootloader, custom recovery, and i'm rooted, but have a bunch of apps installed and a bunch of configurations, unroot, flash stock and then install the OTA, i'm okay?
Angry Black Man said:
so if i have an unlocked bootloader, custom recovery, and i'm rooted, but have a bunch of apps installed and a bunch of configurations, unroot, flash stock and then install the OTA, i'm okay?
Click to expand...
Click to collapse
If you're going to flash stock, you may not need to worry about an OTA. Just find the latest KDZ file for your G5 H850 here: https://lg-firmwares.com/lg-h850-firmwares/ and then flash it with LGUP. Your bootloader will still be unlocked, and you'll have to use fastboot to flash TWRP after which you can root your new stock firmware by flashing SU. Flashing stock is just that; you'll lose any installed apps and configurations you've set in 10d.
Abort said:
If you're going to flash stock...
Flashing stock is just that; you'll lose any installed apps and configurations you've set in 10d.
Click to expand...
Click to collapse
Maybe you can prevent some losses if you use the LG Backup tool at first!
Make a Backup and you can restore some of your apps and their data.
BUT ALL ICON / SOUND & SYSTEM SETTINGS ARE LOST!

Need help: Installed H850 20D OPEN EU ROM + SuperSU and cannot boot

Hi,
I have a rooted LG G5 H850 with an unlocked bootloader and TWRP. I was on H850 20A OPEN EU ROM from autoprime and I tried to flash H850 20D OPEN EU ROM. I booted into recovery TWRP and flashed the Zip file together with the newest SuperSU. When I tried to reboot the phone stuck in reboot - always changing between the message "Your device software cannot be checked for corruption" and the LG logo. After a long time (15 minutes or so) I pulled the battery. The same thing. Then I tried to get into recovery using the 2 hands method. I clicked through the factory reset screens (yes, yes...) - and the phone stuck between warning screen and logo again.
Could someone help me to get into TWRP again? If this would be possible I could restore my backup. Otherwise I don't what to to else...
Thanks for any helP!
Ok, after several tries with the 2 hand method, I got into TWRP again. I tried to restore my backup but it failed with an error. After that I did a full wipe (factory reset) but without the internal storage. Then I flashed the 20D zip again, after that SuperSU. Now the phone is rebooting and rebooting and rebooting. It is stuck on the LG logo and nothing else is happening. It's frustrating...
Firmware reset > flash zip file.
If that doesn't work use the LGUP or LG Bridge method to flash firmware. There should be threads in the development section
projectsome said:
Firmware reset > flash zip file.
If that doesn't work use the LGUP or LG Bridge method to flash firmware. There should be threads in the development section
Click to expand...
Click to collapse
Thanks for your help, but I don't use windows. But in the meantime I got it solved. The reason for the failure was a corrupted external sd card. Flashing from a new card did help.
i'm getting the same problem with the OREO OPEN EU ROM, booted into TWRP, flashed SuperSU and after a few loops got stuck on the LG logo. Had to pull the battery, go into download mode & reflash the ROM via LGUP. I somehow doubt it's the SD card as there were no errors on the SuperSU install.

HELP! Is my phone bricked?

Hello all,
I have a Verizon LG V30 that I converted to a US998 LG V30 using the Frankenstein method. Today, I clicked the Uninstall option in Magisk Manager and the device uninstalled it and rebooted. Upon rebooting, I was thrown into Fastboot mode with no way to get out (No Recovery, nothing.) I tried resetting through Fastboot to no avail. It still connects with Fastboot but nothing else. I can flash firmware with the patched LGUP but no file I have tried has worked. Is there anyway I can flash my V30 back to Stock VS996? Thank you.
Charbleach said:
Hello all,
I have a Verizon LG V30 that I converted to a US998 LG V30 using the Frankenstein method. Today, I clicked the Uninstall option in Magisk Manager and the device uninstalled it and rebooted. Upon rebooting, I was thrown into Fastboot mode with no way to get out (No Recovery, nothing.)
Click to expand...
Click to collapse
Why isn't there a way to get into Recovery? Use the same fastboot commands you got into recovery the first time you installed TWRP. You can even use those commands to boot to TWRP on your phone even when TWRP is not installed on your phone, via "temp" TWRP.
Since you uninstalled root, you can't use the Reboot Recovery app anymore -- as that requires root access -- but you can still use the fastboot flash commands.
Charbleach said:
I tried resetting through Fastboot to no avail. It still connects with Fastboot but nothing else. I can flash firmware with the patched LGUP but no file I have tried has worked. Is there anyway I can flash my V30 back to Stock VS996? Thank you.
Click to expand...
Click to collapse
Yes, go into Download mode manually and use dev patched LGUP to flash VS996 Oreo KDZ with DL Partition method. Flash all partitions. Not sure why you are doing that however. You decided you don't want to own your phone anymore?
People who want to KEEP root and TWRP and go back to VS998 would use DL Partition method -- but UNtick the partition recovery partitions. Then you would still have VS996 but with TWRP. You would no longer have fastboot flash commands, but you would still have TWRP custom recovery. Then you just flash Magisk root. So you would have VS998 with TWRP and root.
And at that point you could even use the reboot recovery app with root to always easily get to TWRP.
ChazzMatt said:
Why isn't there a way to get into Recovery? Use the same fastboot commands you got into recovery the first time you installed TWRP. You can even use those commands to boot to TWRP on your phone even when TWRP is not installed on your phone, via "temp" TWRP.
Since you uninstalled root, you can't use the Reboot Recovery app anymore -- as that requires root access -- but you can still use the fastboot flash commands.
Yes, go into Download mode manually and use dev patched LGUP to flash VS996 Oreo KDZ with DL Partition method. Flash all partitions. Not sure why you are doing that however. You decided you don't want to own your phone anymore?
People who want to KEEP root and TWRP and go back to VS998 would use DL Partition method -- but UNtick the partition recovery partitions. Then you would still have VS996 but with TWRP. You would no longer have fastboot flash commands, but you would still have TWRP custom recovery. Then you just flash Magisk root. So you would have VS998 with TWRP and root.
And at that point you could even use the reboot recovery app with root to always easily get to TWRP.
Click to expand...
Click to collapse
Thank you very much. I am booting up my ADB and Fastboot to flash TWRP, as I still at least have an unlocked boot loader. I’ll download a Oreo KDZ for the Verizon Variant if that doesn’t work out. Do you have any sources for one on the forums? Thank you!
EDIT: Once I get into recovery, should I flash a stock ROM? There are a few on the ROMs section of the forums but I do not non which one to download.
Charbleach said:
Thank you very much. I am booting up my ADB and Fastboot to flash TWRP, as I still at least have an unlocked boot loader. I’ll download a Oreo KDZ for the Verizon Variant if that doesn’t work out. Do you have any sources for one on the forums? Thank you!
EDIT: Once I get into recovery, should I flash a stock ROM? There are a few on the ROMs section of the forums but I do not non which one to download.
Click to expand...
Click to collapse
1) Do your want to keep TWRP and root and just flash back to VS996 (while keeping TWRP and root)?
2) Or do you want to just keep TWRP but you don't want root right now?
If #1, once in TWRP, reflash Magisk.
Then reboot, and go into manual download mode BEFORE opening the patched LGUP. Then Frankenstein back to VS996 with DL PARTITION method, but untick (uncheck) the recovery partitions. Then you'll be back to VS996, but still have TWRP and be rooted.
ChazzMatt said:
1) Do your want to keep TWRP and root and just flash back to VS996 (while keeping TWRP and root)?
2) Or do you want to just keep TWRP but you don't want root right now?
If #1, once in TWRP, reflash Magisk.
Then reboot, and go into manual download mode BEFORE opening the patched LGUP. Then Frankenstein back to VS996 with DL PARTITION method, but untick (uncheck) the recovery partitions. Then you'll be back to VS996, but still have TWRP and be rooted.
Click to expand...
Click to collapse
Don't mind my other comment, I fixed what was going on there for the most part. I have tried 2 different firmware files and both of them will not boot. The Official LG Boot image (flashable with TWRP) flashed with no errors, but i just booted into download mode again. I also flashed LineageOS and the same thing happened. I tried the Refurbish and Upgrade option through LGUP and both stopped at 19% with error 0x2000. Do you have any suggestions? Thank you.
Charbleach said:
Don't mind my other comment, I fixed what was going on there for the most part. I have tried 2 different firmware files and both of them will not boot. The Official LG Boot image (flashable with TWRP) flashed with no errors, but i just booted into download mode again. I also flashed LineageOS and the same thing happened. I tried the Refurbish and Upgrade option through LGUP and both stopped at 19% with error 0x2000. Do you have any suggestions? Thank you.
Click to expand...
Click to collapse
Same thing happened to mine I found no fix other then to lie to both Sprint and LG till LG agreed to take it in and fix it...

How to get Oreo firmware on rooted H932

Hi all,
I've successfully rooted my H932. Magisk 18, rctd, no_verity, and LOS 16 are installed with latest TWRP. 3.2.3-7 installed on laf and recovery.
Sorry if this is a stupid question, the fingerprint reader is not working, and SGCMarkus suggested the reason was I wasn't on OREO firmware.
I'm pretty sure i'm still on 10d from KDZ when i rooted.
How do I update the firmware?...do I use LGUP with H93220p_00_1121.kdz and not install on LAF or RECOVERY and then flash Magiskj, rctd, and no-verity? Then put LOS 16 back over that with TWRP?
Can I use TWRP the whole way? I think LGUP stopped working after I flashed TWRP to LAF and RECOVERY...
Thx, Andrew
andyjh122 said:
Hi all,
I've successfully rooted my H932. Magisk 18, rctd, no_verity, and LOS 16 are installed with latest TWRP. 3.2.3-7 installed on laf and recovery.
Sorry if this is a stupid question, the fingerprint reader is not working, and SGCMarkus suggested the reason was I wasn't on OREO firmware.
I'm pretty sure i'm still on 10d from KDZ when i rooted.
How do I update the firmware?...do I use LGUP with H93220p_00_1121.kdz and not install on LAF or RECOVERY and then flash Magiskj, rctd, and no-verity? Then put LOS 16 back over that with TWRP?
Can I use TWRP the whole way? I think LGUP stopped working after I flashed TWRP to LAF and RECOVERY...
Thx, Andrew
Click to expand...
Click to collapse
There's a thread with 20o and 20p zips that can be flashed in twrp to bring you up to stock Oreo. Once you've gone to either of those, then clean installed lineageos 16, your fingerprint reader should work. No guarantees, but it should.
did it work?
When I flashed to pixel rom, I flashed Brian's 20k zip, then pie and every thing worked perfect. Then flashed back to 20k then 20p I guess i would advise always flashing stock first. And if you had success with a procedure then make sure to follow the same prelimary steps when flashing another zip

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