Develop Bugs

[Q]TWRP update boots only in TWRP

Hey I got a "system update" last night and once it was applied my gpad restarted in TWRP. It will not boot up into the OS.
I am running a rooted gpad with twerp and bone stock LG android(no custom rom of any sort)
I have looked into XDA and found similar threads but for the G2, to my understanding they are very similar in many ways but I would like to confirm that the solution I found is ok for the gpad or if there is another workaround:
If you have ADB access, plug in your phone and run this:
adb shell
dd if=/dev/block/platform/msm_sdcc.1/by-name/fota of=/sdcard/fota-backup.img
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota
Then you should be able to successfully reboot your phone via the TWRP menu option, or via a simple reboot command in adb.(<- what is the reboot command btw?)
It also gives a solution without ADB but it doesn't concern me. Does anyone know if this procedure can be followed for the Gpad as well? is there something that must be altered?
Thank you for your patience

Will not hurt to try
The comand is:
Adb reboot
Enviado do meu GT-I9300 através de Tapatalk

SnowPluralism said:
Will not hurt to try
The comand is:
Adb reboot
Enviado do meu GT-I9300 através de Tapatalk
Click to expand...
Click to collapse
guess so, thing is I have no idea what this code means and if its device specific to the G2. Just in case this makes more of a mess. Also wondering if flashing a custom rom on top would fix it

Thats no code thats only adb comands
U can try it with zero to no hurt
And yes flashing custom or even just wiping data would do the trick
Enviado do meu GT-I9300 através de Tapatalk

SnowPluralism said:
Thats no code thats only adb comands
U can try it with zero to no hurt
And yes flashing custom or even just wiping data would do the trick
Enviado do meu GT-I9300 através de Tapatalk
Click to expand...
Click to collapse
appreciate your help I'll give it a try in a couple of hours n report back bed time for me

if you ve got official rom with root or custom recovery OTAs wont work and they ll semibrick the gpad like in your case. The safe methods i know is either using lg mobile support tool to go back to full stock or flash a custom rom via the twrp.

katsika said:
if you ve got official rom with root or custom recovery OTAs wont work and they ll semibrick the gpad like in your case. The safe methods i know is either using lg mobile support tool to go back to full stock or flash a custom rom via the twrp.
Click to expand...
Click to collapse
Right cause I dont like the ADB method I have tried:
Factory reset-Didnt work
Full wipe (dalvic etc ) -Didnt work
Tried to install a stock based rom(forgot the name)-Did not work
I'll try 1 more rom and then if that doesnt work I'll try the ADB business and if that doesnt work try to revert back to bone stock

okay guys this is getting frustrating nothing works.
I downloaded the drivers for the gpad again, and I tried to use the lg software to flash stock recovery, but it wont find my device. has anyone experienced something similar or knows how to resolve this its getting really frustrating.

b3ava said:
okay guys this is getting frustrating nothing works.
I downloaded the drivers for the gpad again, and I tried to use the lg software to flash stock recovery, but it wont find my device. has anyone experienced something similar or knows how to resolve this its getting really frustrating.
Click to expand...
Click to collapse
I needed to be in download mode to be reconized by LG Mobile Support Tool (I downloaded and installed different versions of LG Mobile drivers too many times before to do the the right thing)
To enter download mode :
1. Turn off the tablet. (from TWRP menu )
2. Push vol+ and vol- same time. (both buttons + don't relase)
3. Insert usb cable (both buttons still pressed)
4. A small image DOWNLOAD MODE not so visible should appear on the tablet
5. Release both buttons.
LG Mobile Support Tool reconized my tablet and I could start the recovery (still waiting 1.5Gb to be downloaded)

b3ava said:
Hey I got a "system update" last night and once it was applied my gpad restarted in TWRP. It will not boot up into the OS.
I am running a rooted gpad with twerp and bone stock LG android(no custom rom of any sort)
I have looked into XDA and found similar threads but for the G2, to my understanding they are very similar in many ways but I would like to confirm that the solution I found is ok for the gpad or if there is another workaround:
If you have ADB access, plug in your phone and run this:
adb shell
dd if=/dev/block/platform/msm_sdcc.1/by-name/fota of=/sdcard/fota-backup.img
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota
Then you should be able to successfully reboot your phone via the TWRP menu option, or via a simple reboot command in adb.(<- what is the reboot command btw?)
It also gives a solution without ADB but it doesn't concern me. Does anyone know if this procedure can be followed for the Gpad as well? is there something that must be altered?
Thank you for your patience
Click to expand...
Click to collapse
It does work in the solution given without adb, from TWRP itself. Just tried it, no data loss, no computer needed.

VK810 Download Mode Boot Loop =(

Here's the situation.
-gpad on official verizon kitkat. rooted with TWRP installed.
-tried doing the OTA update
-upon reboot for OTA update, boot loops to twrp
-flashed stock recovery.img from TWRP terminal
-boot loop fixed and able to boot into original OS before OTA update attempt
-tried OTA update with stock recovery but fails @ 5% with error code ERR:0x13E
-used the LG Mobile Support tool to try and manually update
-goes into download mode
-update fails
-now only reboots to Download Mode
-tried all button combinations to get into any other mode. fails.
-even tried taking apart and pulling battery
Result: still stuck in download mode.
Any suggestions guys?

Just in case someone else is having this issue, I'm not deleting this post.
looks like I got it fixed.
I ran lg mobile support tool on a diff computer and this time it went through.
All up and running again.

I got myself in this same bootloop. Mind sending me the recovery.img file or showing me the way to the correct LG Mobile Support Tool?

eldiablo1 said:
Just in case someone else is having this issue, I'm not deleting this post.
looks like I got it fixed.
I ran lg mobile support tool on a diff computer and this time it went through.
All up and running again.
Click to expand...
Click to collapse
How did you get it to up and running again?
I'm stuck in twrp...

alphakp295 said:
How did you get it to up and running again?
I'm stuck in twrp...
Click to expand...
Click to collapse
I had to wipe FOTA... thanks to id10terror
1. Boot into TWRP
2. Go to Advanced, then Terminal Command
3. Browse to Folder: /dev/block/platform/mdm_sdcc.1/by-name
4. Hit Select button
5. Now in the text field type "dd if=/dev/zero of=./fota" without quotes and Hit "Go"
6. Reboot system

You are a life saver! Thanks.

Thanks a lot from me as well, got me out of the boot loop I created by trying to update using an OTA on my rooted LG G Pad and these commands got me back up and running..

Just ran it now thank you Sir! ?

Pad boot in Download mode only.
What version of LG Mobile Support tool need for restore firmware?
Automatically don't install devices in windows (Win8) after connect.

Alexander Kalinin said:
Pad boot in Download mode only.
What version of LG Mobile Support tool need for restore firmware?
Automatically don't install devices in windows (Win8) after connect.
Click to expand...
Click to collapse
Hi! What variant of the G Pad 8.3 do you have? I would use LG Flash Tool 2014 instead of the official tool, and download the latest official KDZ file to use with it, made for your variant.
You'll have to download the drivers for your variant from LG's website, reboot the PC, then plug the tablet into the PC while it's in Download mode. Can take 1 to 10 minutes to load the driver. Then use the flash tool I mentioned.
Sent from my VK810 4G

Thanks! VK810.
Properly install driver on another PC and recovery by Support Tool.

Alexander Kalinin said:
Thanks! VK810.
Properly install driver on another PC and recovery by Support Tool.
Click to expand...
Click to collapse
You're welcome. So you got it sorted out?

[Solved] Help: "Secure Boot error" When trying to boot into recovery

HI everyone.
Today, I managed to root my LG G3(D855) that is on the Lollipop version(OTA update).
The reason for this root was to flash the cyanogenMod 12 rom. I found out that I needed a bump'd twrp recovery image which I got from this page:
I tried using flashify to flash this image which flashify claims was a success but when I try to boot into recovery, it gives me a "Secure boot error" message.
does the same methods that apply for flashing custom recovery in android 4.4.2 on LG G3 not apply to Lollipop versions?
if I do a battery pull and boot up the device normally, the device seems to work alright but I can't boot into recovery.
So, please I need help as I want to install this CM12. it bothers me a lot that my nexus 7 seems faster than my G3
-- Problem Solved---
I was able to fix this problem and booting into a custom recovery by going through this thread: http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845
Here are the files I used:
"aboot.img" from a kitkat D855 stock rom. (here is the one I used https://docs.google.com/file/d/0B7fkQwhNpU7YNTdfZUQyZlQzLTA)
oversharpening fix flashable zip (here is the one I used http://forum.xda-developers.com/lg-g3/orig-development/fix-sharpening-mod-script-1-0-beta-t2957648 used the latest version at the time of posting.)
a bump'd twrp recovery image for D855 from here: http://downloads.codefi.re/thecubed/lg_g3/bump/
kikat bootstack from here for D855: https://www.androidfilehost.com/?fid=95916177934540501
after getting all these files, move it to the root folder of your SD card.
attempt the process below at your own risk
Here is how I used the files:
I first used flashify (download from play store) to install the bump'd twrp recovery.img.
Then using android terminal emulator (download from play store) I ran this command
Code:
su [b](no need to retype this if you did not exit from the previous Android Terminal session)[/b]
dd if=/dev/block/platform/msm_sdcc.1/by-name/aboot of=/sdcard/lollipop-aboot.img [b](this makes a backup to your Internal Storage)[/b]
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](writes “zeroes” to the partition to “wipe” it out)[/b]
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](flashes the Kitkat version aboot.img to the aboot partition)[/b]
from this post: http://forum.xda-developers.com/showpost.php?p=59353812&postcount=44
I then reBooted my device into recovery mode which of course now has become TWRP recovery.
in the twrp recovery I flashed in the oversharpening fix.zip file (I was prompted during the installation to choose a sharpening level, I chose 5. this value doesn't have anything to do with the recovery process, we just need it to bump the lollipop boot.img)
After that, I flashed in the Kitkat boot stack and then rebooted my device.
that's it. I am on CM 12 now. Good luck.
and of course, credit goes to this user: @topet2k12001. He is a G3 superhero.

same
Hey ,i got the same problem ,just rooted my d855 and i want to flash a custom recovery so i can install xposed ,but after flashify reboots the device i get the same message...plz reply me if u found a solution

N00R28 said:
Hey ,i got the same problem ,just rooted my d855 and i want to flash a custom recovery so i can install xposed ,but after flashify reboots the device i get the same message...plz reply me if u found a solution
Click to expand...
Click to collapse
I did but it was a very complex solution. see http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845
I am yet to attempt that.

Causes of "Secure Boot Error"
Hi Friends,
"Secure Boot Error" and "Certification Verify" are already "known" errors, and by "known" it means that the causes are already well-established and therefore, can be fixed.
Please visit my thread and read the very first post at Page 1, for the following topics:
1. "The Logic Behind It All"
2. "Troubleshooting and "Q&A"
Heads up: I'm not the type of member who will give a straight answer, so please expect my how-to and posts to be very wordy. I want fellow members to understand what they are doing, not just tell them what they are doing (teach people how to fish, not just give them fish - so to speak).

Sent from my LG-D855 using XDA Free mobile app
Yeah i saw that solution but the kdz extracte thread is not that detailed ...tnx tho

N00R28 said:
Sent from my LG-D855 using XDA Free mobile app
Yeah i saw that solution but the kdz extracte thread is not that detailed ...tnx tho
Click to expand...
Click to collapse
Hi @N00R28,
I agree. That's why I wrote a detailed version of it in my how-to guide.

Sent from my LG-D855 using XDA Free mobile app
Hey,tnx but i will wait for an easier solution ,i would like to do the complicated way as its fun to do but i have exams and dont have much time ,so im gonna wait for something fast and easy :
But may i ask why these problems with lg g3 lollipop?all nexus and Samsung devices r easier and been there since the lunch of lollipop,even rooting g3 was a pain untill last week

N00R28 said:
Sent from my LG-D855 using XDA Free mobile app
Hey,tnx but i will wait for an easier solution ,i would like to do the complicated way as its fun to do but i have exams and dont have much time ,so im gonna wait for something fast and easy :
But may i ask why these problems with lg g3 lollipop?all nexus and Samsung devices r easier and been there since the lunch of lollipop,even rooting g3 was a pain untill last week
Click to expand...
Click to collapse
The explanation is in my how-to thread, Page 1.
I created an easy solution already as well, it's in my how-to thread. I created a script called "Imageprep". It only requires typing a single command in the Terminal. You must have not read the guide fully so you might have missed it. Understandable because you said you have exams.

Sent from my LG-D855 using XDA Free mobile app
Ohh cool ,tnx will check it out tomorrow

N00R28 said:
Hey ,i got the same problem ,just rooted my d855 and i want to flash a custom recovery so i can install xposed ,but after flashify reboots the device i get the same message...plz reply me if u found a solution
Click to expand...
Click to collapse
I was able to decipher the parts I needed in that thread. see my first post for the solution I used.

lordzouga said:
I was able to decipher the parts I needed in that thread. see my first post for the solution I used.
Click to expand...
Click to collapse
Very good, @lordzouga.
This is the reason why as much as possible, I explain the logic and force other members to understand it first. It makes the process easier for them because they know what they are doing.

The method worked perfectly after i bricked my device for the 1st time (was flashing the wrong recovery)after it worked i noticed most of the apps i need dont run on lillipop (due to devs not upgrading the apps to run with ART) so i downgraded to kitkat ......tnx alot for ur help

Thanks, this method worked perfectly.
Sent from my LG-D855 using Tapatalk

Totally bricked my phone with these instructions Won't turn on anymore. Tried everything...only shows a trinagle if I connect to usb without battery.

Super easy to use thank you buddy:d
SUPER EASY TO USE THANK YOU BUDDY
Please explain about sharpening what it actually do ?? what difference it makes..??
lordzouga said:
HI everyone.
Today, I managed to root my LG G3(D855) that is on the Lollipop version(OTA update).
The reason for this root was to flash the cyanogenMod 12 rom. I found out that I needed a bump'd twrp recovery image which I got from this page:
I tried using flashify to flash this image which flashify claims was a success but when I try to boot into recovery, it gives me a "Secure boot error" message.
does the same methods that apply for flashing custom recovery in android 4.4.2 on LG G3 not apply to Lollipop versions?
if I do a battery pull and boot up the device normally, the device seems to work alright but I can't boot into recovery.
So, please I need help as I want to install this CM12. it bothers me a lot that my nexus 7 seems faster than my G3
-- Problem Solved---
I was able to fix this problem and booting into a custom recovery by going through this thread: http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845
Here are the files I used:
"aboot.img" from a kitkat D855 stock rom. (here is the one I used https://docs.google.com/file/d/0B7fkQwhNpU7YNTdfZUQyZlQzLTA)
oversharpening fix flashable zip (here is the one I used http://forum.xda-developers.com/lg-g3/orig-development/fix-sharpening-mod-script-1-0-beta-t2957648 used the latest version at the time of posting.)
a bump'd twrp recovery image for D855 from here: http://downloads.codefi.re/thecubed/lg_g3/bump/
kikat bootstack from here for D855: https://www.androidfilehost.com/?fid=95916177934540501
after getting all these files, move it to the root folder of your SD card.
attempt the process below at your own risk
Here is how I used the files:
I first used flashify (download from play store) to install the bump'd twrp recovery.img.
Then using android terminal emulator (download from play store) I ran this command
Code:
su [b](no need to retype this if you did not exit from the previous Android Terminal session)[/b]
dd if=/dev/block/platform/msm_sdcc.1/by-name/aboot of=/sdcard/lollipop-aboot.img [b](this makes a backup to your Internal Storage)[/b]
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](writes “zeroes” to the partition to “wipe” it out)[/b]
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](flashes the Kitkat version aboot.img to the aboot partition)[/b]
from this post: http://forum.xda-developers.com/showpost.php?p=59353812&postcount=44
I then reBooted my device into recovery mode which of course now has become TWRP recovery.
in the twrp recovery I flashed in the oversharpening fix.zip file (I was prompted during the installation to choose a sharpening level, I chose 5. this value doesn't have anything to do with the recovery process, we just need it to bump the lollipop boot.img)
After that, I flashed in the Kitkat boot stack and then rebooted my device.
that's it. I am on CM 12 now. Good luck.
and of course, credit goes to this user: @topet2k12001. He is a G3 superhero.
Click to expand...
Click to collapse

The reason why recovery wont load if you rooted using LG's lollipop firmware is because they patched the hack that bypasses the Security check. You need to downgrade to kitkat or keep on Lg's lollipop

χχ

My G3 does not start up
lordzouga said:
HI everyone.
Today, I managed to root my LG G3(D855) that is on the Lollipop version(OTA update).
The reason for this root was to flash the cyanogenMod 12 rom. I found out that I needed a bump'd twrp recovery image which I got from this page:
I tried using flashify to flash this image which flashify claims was a success but when I try to boot into recovery, it gives me a "Secure boot error" message.
does the same methods that apply for flashing custom recovery in android 4.4.2 on LG G3 not apply to Lollipop versions?
if I do a battery pull and boot up the device normally, the device seems to work alright but I can't boot into recovery.
So, please I need help as I want to install this CM12. it bothers me a lot that my nexus 7 seems faster than my G3
-- Problem Solved---
I was able to fix this problem and booting into a custom recovery by going through this thread: http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845
Here are the files I used:
"aboot.img" from a kitkat D855 stock rom. (here is the one I used https://docs.google.com/file/d/0B7fkQwhNpU7YNTdfZUQyZlQzLTA)
oversharpening fix flashable zip (here is the one I used http://forum.xda-developers.com/lg-g3/orig-development/fix-sharpening-mod-script-1-0-beta-t2957648 used the latest version at the time of posting.)
a bump'd twrp recovery image for D855 from here: http://downloads.codefi.re/thecubed/lg_g3/bump/
kikat bootstack from here for D855: https://www.androidfilehost.com/?fid=95916177934540501
after getting all these files, move it to the root folder of your SD card.
attempt the process below at your own risk
Here is how I used the files:
I first used flashify (download from play store) to install the bump'd twrp recovery.img.
Then using android terminal emulator (download from play store) I ran this command
Code:
su [b](no need to retype this if you did not exit from the previous Android Terminal session)[/b]
dd if=/dev/block/platform/msm_sdcc.1/by-name/aboot of=/sdcard/lollipop-aboot.img [b](this makes a backup to your Internal Storage)[/b]
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](writes “zeroes” to the partition to “wipe” it out)[/b]
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot [b](flashes the Kitkat version aboot.img to the aboot partition)[/b]
from this post: http://forum.xda-developers.com/showpost.php?p=59353812&postcount=44
I then reBooted my device into recovery mode which of course now has become TWRP recovery.
in the twrp recovery I flashed in the oversharpening fix.zip file (I was prompted during the installation to choose a sharpening level, I chose 5. this value doesn't have anything to do with the recovery process, we just need it to bump the lollipop boot.img)
After that, I flashed in the Kitkat boot stack and then rebooted my device.
that's it. I am on CM 12 now. Good luck.
and of course, credit goes to this user: @topet2k12001. He is a G3 superhero.
Click to expand...
Click to collapse
Please help!!! I followed your instructions and as i powered off my phone, now it does not boot up....can't even go to download mode.... please help!!

paragxx said:
Please help!!! I followed your instructions and as i powered off my phone, now it does not boot up....can't even go to download mode.... please help!!
Click to expand...
Click to collapse
Be careful with this thread, it will brick your phone. On the safe side make sure you remove laf partition and fastboot is working. I got mine bricked.

Does it work for Android 5.0 Lollipop or only Android 4.4 Kitkat?

LG Mobile Support Tool won't download software.

I'm having problems with the LG Mobile Support Tool. When I try "Upgrade recovery" it gets stuck at "Downloading software..."
It starts downloading fast, but after it gets about 30% or so, the download speed drops to nil. My internet is stable and fast. According to NetBalancer, the LG tool starts downloading at a steady 3mb/s, and then drops to short bursts of 50-150kb/sec. I'm not having any connectivity issues with other programs.
I let it keep going earlier today for almost 4 hours. It got to about 60% and then the tool crashed.
There's been a couple of times it said something like "Please check your internet connection, then press retry." The internet connection is fine, and clicking retry will bring it back up to full speed for a few minutes before it slows again.
What can I do?

What version of Windows are you using?
---------- Post added at 04:16 PM ---------- Previous post was at 04:09 PM ----------
Please don't post about the same problems in two different threads. I'm guessing since you using Volume Up to get into Download mode that you have a VK810 variant of the G Pad 8.3, correct?
If so, try one of the KDZs in my signature for the VK810.4G with LG Flash Tool 2014 (Google for it on XDA). That way you don't have to have a tool re-download the KDZ every time you attempt to recover.
If you want root and custom recovery, it's easiest to get both with the 11A KDZ, then flash my ROM in my signature with the latest TWRP v2.8.7.0. If you just want the latest stock unrooted, download the 36B KDZ.
If you don't have the VK810.4G, don't use the KDZs I link to.

What version of Windows are you using?
Click to expand...
Click to collapse
I am using Windows 7 Ultimate 64-bit
...you have a VK810 variant of the G Pad 8.3, correct?
Click to expand...
Click to collapse
Yes, I have the VK810.4G
Please don't post about the same problems in two different threads.
Click to expand...
Click to collapse
I wasn't sure if this should be considered a new problem, or a continuation of the other. But, I can see how that would split people's attention. My bad.
I will try your steps, and let you know how it goes.

Ok, I succesfully got TWRP and 4.2.2 w/root.
Now I have another problem...
When I flash ViKtory Rom and SuperSU, it will not boot. It just gets stuck at the red Verizon screen.
You mentioned that in your ViKtory rom thread:
5.2.2. One user has verified that on their VK810, that once they flash any version of SuperSU.zip that they've tried, including 2.46 and 2.48 beta, the ROM will not boot. You're ONLY recourse is to get into Download mode and use "LG Flash Tool 2014" to Flash the 35A_08 KDZ, and root it using @Hnk1's thread [VK810][ROOT][Lollipop][5.02] No downgrade required.
Click to expand...
Click to collapse
After flashing, I lose the custom recovery and it boots to 5.0.2 without root. None of the root methods in Hnk1's thread succeeded in rooting...
I did this successfully about 6 months ago, so I know it's possible.
EDIT: I just realized that you said to flash the 35A KDZ, and I used the 36B KDZ. I'll download the 35A one and see if I have better luck rooting then.

SlickStretch said:
Ok, I succesfully got TWRP and 4.2.2 w/root.
Now I have another problem...
When I flash ViKtory Rom and SuperSU, it will not boot. It just gets stuck at the red Verizon screen.
You mentioned that in your ViKtory rom thread:
After flashing, I lose the custom recovery and it boots to 5.0.2 without root. None of the root methods in Hnk1's thread succeeded in rooting...
I did this successfully about 6 months ago, so I know it's possible.
EDIT: I just realized that you said to flash the 35A KDZ, and I used the 36B KDZ. I'll download the 35A one and see if I have better luck rooting then.
Click to expand...
Click to collapse
Re: 35A versus 36B, I just haven't updated the OP. Actually these days I recommend the 11A KDZ because:
1. 11A through 24B can be rooted easily with the Stump app in brute force mode.
2. 11A is 4.2.2, so the aboot (bootloader) doesn't need downgraded prior to installing the initial Loki'd TWRP v2.7.0.1.
Did you upgrade to TWRP v2.8.7.0 before flashing the ROM and SuperSU.zip? Flashing KDZs always returns your device to complete unrooted stock just like from the factory. You should always use "CSE" mode of LG Flash Tool 2014. "Normal" mode doesn't wipe Data or Internal Storage, but especially if downgrading, you can expect that to cause problems.
35A is just as hard to root as 36B. I wrote that tip in the OP after I thought @Hnk1 's method was more easily reproducible. Sorry for the runaround and out of date directions, but you should go with the 11A KDZ.
If you had upgraded TWRP to v2.8.7.0 before flashing my ROM and SuperSU.zip and still had problems booting, you can try wiping Cache and Dalvik again (after flashing), but I don't expect that to work. You can also use CWM Recovery (just flash CWM from TWRP). There's a thread for VK810 CWM on here plus I think I have it in my VK810 section on Android File Host as a mirror, and wipe and flash everything from there. Like I said, that's only if you tried flashing from the latest TWRP v2.8.7.0 (available in these sections) for the VK810 and still had this problem. If you do switch to CWM, you can switch back after flashing the ROM for backups and such.
Good luck!

Success!
Success! :laugh: I am now running ViKtory rom! It's debloated and rooted and sweet! Thank you so much for your help. I believe this is the 2nd time you've saved my tablet!
One last question: Do I need to flash aboot to access recovery with your rom?
Here's all the steps I took on my path to success, just in case anybody finds it helpful.
===============================================================================
To return to stock, unbrick, or prepare to root.
===============================================================================
1: Open LG Flash Tool 2014
2: Use the following settings:
- Select Type: CDMA
- PhoneMode: DIAG
- Reset time: 33000
- Select KDZ file: Use newest to go back to stock unrooted
Use 11A if planning to root/twrp
- Upgrade with CSMG Client: Normal Flash will not wipe, SCE Flash will wipe
3: LG Flash Tool will open LG Mobile Update tool. If an error window pops up
saying "Cannot connect to server..." Ignore it. DO NOT CLICK OK! It will run
it's course and the tablet will reboot.
4: Done with that.
===============================================================================
To root
===============================================================================
Use Stump Root app. (Bruteforce)
===============================================================================
To install TWRP custom recovery
===============================================================================
1: Connect tablet in debugging mode.
2: Navigate to where loki_flash and twrp.lok is.
3: Open cmd from this location.
4: Run the following commands:
4a: adb push loki_flash /data/local/tmp/loki_flash
4b: adb push twrp.lok /data/local/tmp/twrp.lok
4c: adb shell
4d: su
4e: cd /data/local/tmp/
4f: chmod 777 loki_flash
4g: ./loki_flash recovery /data/local/tmp/twrp.lok
4h: exit
4i: exit
4j: adb reboot recovery
The tablet should now boot to TWRP
===============================================================================
To install ViKtory rom
===============================================================================
1: Boot to TWRP recovery v2.8.7.0
2: wipe system, data, cache, dalvik and internal storage DO NOT REBOOT
3: Go to Mount > enable MTP
4: Copy ViKtory rom and SuperSU zip files to tablet (and debloat scripts if
desired.)
5: Install zip files (may have to switch between IMG and ZIP to see them.)
6: Reboot.
ALL DONE!

SlickStretch said:
Success! :laugh: I am now running ViKtory rom! It's debloated and rooted and sweet! Thank you so much for your help. I believe this is the 2nd time you've saved my tablet!
One last question: Do I need to flash aboot to access recovery with your rom?
Click to expand...
Click to collapse
Great! You're welcome, I like hearing about successful device adventures.
Yes, the exact directions what I have at the bottom of the first post. I'm unfortunately not knowledgeable enough to solve the boot into TWRP problem with the Lollipop bootloader / getting Lollipop to boot without he Lollipop bootloader on the VK810, although @xdabbeb gave me some ideas to try if I ever find the time.

LG Support tool get stuck at 60% installing new firmware/KDZ files to reset LG ms323 phone to factory settings.
What is the solution to this problem?

Urgent Help: Can't Upgrade or can't Go into recovery mode

Hi. I have a weird issue. I have a D855 phone which is running on kitkat v10n. I thought of Upgrading it to official 5.0 or 6.0 firmware and decided to check for the option software update in my phone. But I didn't find any. So i thought of installing TWRP recovery to my phone. and I flashed through flashify and cant boot into recovery menu but i can see fastboot menu started and some other 2,3 lines at the top left corner of the phone. I cant even reset the phone also as doing that going into same fastboot menu but when i pull the battery and place it it is booting.
The real thing starts from here. I want to check whats wrong with my phone and found that actually my phone motherboard is LS990.Not D855. So I came to know that as i wrong flashed the recovery, I am getting fastboot mode. So can I flash tot file directly now or not? if doing so will it result in hard/soft brick or in boot loop? Please help me to upgrade from kitkat to lollipop without any damage to my phone. Expecting a resolution from you. Thank u..

Can you still boot into download mode or not?

You did not see the upgrade because either your sd card is full or too small for update to fit. Happened to me once. When you sort this up, make some room on your sd card and then let the OTA do the thing.

itsbighead said:
Can you still boot into download mode or not?
Click to expand...
Click to collapse
Yes. I can boot into download mode..My phone i think is running on kitkat rom v10n. Its motherboard is ls990 but in software info its showing D855. I only cant reset the phone, cant go into recovery and cant update through OTA and also through Flash tool. How to get recovery menu (custom or even stock recovery) and i want to get rid of fastboot menu.

krishna13 said:
Yes. I can boot into download mode..My phone i think is running on kitkat rom v10n. Its motherboard is ls990 but in software info its showing D855. I only cant reset the phone, cant go into recovery and cant update through OTA and also through Flash tool. How to get recovery menu (custom or even stock recovery) and i want to get rid of fastboot menu.
Click to expand...
Click to collapse
Ops , your phone ls990 and flashing d855 software ?

fOxunO said:
Ops , your phone ls990 and flashing d855 software ?
Click to expand...
Click to collapse
yes.by seeing the software info i did.can u help me in this??

krishna13 said:
yes.by seeing the software info i did.can u help me in this??
Click to expand...
Click to collapse
If you can boot into download, it would be possible to flash kdz. Just you must find the right one for your phone!!
Edit: you will have to use LG flash tool. LGUP is only for D855.
Post here before you do anything.

Navuhodonosor said:
If you can boot into download, it would be possible to flash kdz. Just you must find the right one for your phone!!
Edit: you will have to use LG flash tool. LGUP is only for D855.
Post here before you do anything.
Click to expand...
Click to collapse
no.for ls990 there is no kdz i think so.only tot and dll files.but i am doubtful in flashing anything before fixing the fastboot menu as i could brick my device if anything wrong happens..

Ufff.
This is the hard way but at least first you check your memory for errors, and somewhere in the text it clearly says that fastboot is a no-go.
http://open-freax.fr/guide-unbrick-your-lg-g3/
I personally would go with a download mode and tot files, AND DISBLED ALL THE THINGS THAT WANT TO KILL PROCESSES. like antiviruses, win-defender etc.
Trust me, I know how you feel, maybe some more ideas drop into the thread.

krishna13 said:
Hi. I have a weird issue. I have a D855 phone which is running on kitkat v10n. I thought of Upgrading it to official 5.0 or 6.0 firmware and decided to check for the option software update in my phone. But I didn't find any. So i thought of installing TWRP recovery to my phone. and I flashed through flashify and cant boot into recovery menu but i can see fastboot menu started and some other 2,3 lines at the top left corner of the phone. I cant even reset the phone also as doing that going into same fastboot menu but when i pull the battery and place it it is booting.
The real thing starts from here. I want to check whats wrong with my phone and found that actually my phone motherboard is LS990.Not D855. So I came to know that as i wrong flashed the recovery, I am getting fastboot mode. So can I flash tot file directly now or not? if doing so will it result in hard/soft brick or in boot loop? Please help me to upgrade from kitkat to lollipop without any damage to my phone. Expecting a resolution from you. Thank u..
Click to expand...
Click to collapse
krishna13 said:
no.for ls990 there is no kdz i think so.only tot and dll files.but i am doubtful in flashing anything before fixing the fastboot menu as i could brick my device if anything wrong happens..
Click to expand...
Click to collapse
So lets explain few things first. You can safely flash tot files via download mode. Tot file contains your stock recovery partition as well. So everything will be flashed to stock. So if you find tot file to flash for your model fell free to flash it.
Instead what I would suggest is for you to flash TWRP, and after that flashing Lollipop zip with TWRP.
Here is how:
You download TWRP zip for LS990 from here if you are sure that's your model:
https://www.androidfilehost.com/?fid=24052804347763136
then you extract recovery.img file from the zip,
then to flash it either use flashify or these adb commands:
adb shell
su
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/recovery
dd if=/sdcard/recovery.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
Ofc if you use these exact adb commands you need to place recovery.img to root of your /sdcard.
So now you confirm that you have a working TWRP. Try to boot into it.
If it succeeds you have Sprint Lollipop files provided here:
http://downloads.codefi.re/autoprime/LG/LG_G3/LS990/stock_partitions/ZVA
You only need these files: system.img, boot.img, modem.img, rpm.img, tz.img
IMPORTANT: boot.img you download from here not from the link above:
http://forum.xda-developers.com/attachment.php?attachmentid=3165683&d=1423941988
After downloading them and placing them in root of sdcard, boot to TWRP open terminal and write these:
dd if=/sdcard/system.img of=/dev/block/platform/msm_sdcc.1/by-name/system
dd if=/sdcard/zv8_boot_fixed.img of=/dev/block/platform/msm_sdcc.1/by-name/boot
dd if=/sdcard/modem.img of=/dev/block/platform/msm_sdcc.1/by-name/modem
dd if=/sdcard/rpm.img of=/dev/block/platform/msm_sdcc.1/by-name/rpm
dd if=/sdcard/tz.img of=/dev/block/platform/msm_sdcc.1/by-name/tz
That's it.
Credit for these files goes to the OP of this thread @autoprime
http://forum.xda-developers.com/spr...stock-sprint-lg-g3-ls990-zva-tot-ota-t3142061

Navuhodonosor said:
Ufff.
This is the hard way but at least first you check your memory for errors, and somewhere in the text it clearly says that fastboot is a no-go.
http://open-freax.fr/guide-unbrick-your-lg-g3/
I personally would go with a download mode and tot files, AND DISBLED ALL THE THINGS THAT WANT TO KILL PROCESSES. like antiviruses, win-defender etc.
Trust me, I know how you feel, maybe some more ideas drop into the thread.
Click to expand...
Click to collapse
thanks for the suggestion friend

NatusVincere said:
So lets explain few things first. You can safely flash tot files via download mode. Tot file contains your stock recovery partition as well. So everything will be flashed to stock. So if you find tot file to flash for your model fell free to flash it.
Instead what I would suggest is for you to flash TWRP, and after that flashing Lollipop zip with TWRP.
Here is how:
You download TWRP zip for LS990 from here if you are sure that's your model:
https://www.androidfilehost.com/?fid=24052804347763136
then you extract recovery.img file from the zip,
then to flash it either use flashify or these adb commands:
adb shell
su
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/recovery
dd if=/sdcard/recovery.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
Ofc if you use these exact adb commands you need to place recovery.img to root of your /sdcard.
So now you confirm that you have a working TWRP. Try to boot into it.
If it succeeds you have Sprint Lollipop files provided here:
http://downloads.codefi.re/autoprime/LG/LG_G3/LS990/stock_partitions/ZVA
You only need these files: system.img, boot.img, modem.img, rpm.img, tz.img
IMPORTANT: boot.img you download from here not from the link above:
http://forum.xda-developers.com/attachment.php?attachmentid=3165683&d=1423941988
After downloading them and placing them in root of sdcard, boot to TWRP open terminal and write these:
dd if=/sdcard/system.img of=/dev/block/platform/msm_sdcc.1/by-name/system
dd if=/sdcard/zv8_boot_fixed.img of=/dev/block/platform/msm_sdcc.1/by-name/boot
dd if=/sdcard/modem.img of=/dev/block/platform/msm_sdcc.1/by-name/modem
dd if=/sdcard/rpm.img of=/dev/block/platform/msm_sdcc.1/by-name/rpm
dd if=/sdcard/tz.img of=/dev/block/platform/msm_sdcc.1/by-name/tz
That's it.
Credit for these files goes to the OP of this thread @autoprime
http://forum.xda-developers.com/spr...stock-sprint-lg-g3-ls990-zva-tot-ota-t3142061
Click to expand...
Click to collapse
Hi thanks a lot. I already knew that reflashing the LS990 TWRP works but waiting for the confirmation. Anyhow thanks a lot for ur help. Now Instead of fastboot menu I can go to TWRP recovery menu.Now I need to flash either lollipop stock rom or marshmallow stock rom( if available for my sprint version). But presently lollipop is ok. I cant find the system.img. can you please provide me a link of the lollipop flash files please??

krishna13 said:
Hi thanks a lot. I already knew that reflashing the LS990 TWRP works but waiting for the confirmation. Anyhow thanks a lot for ur help. Now Instead of fastboot menu I can go to TWRP recovery menu.Now I need to flash either lollipop stock rom or marshmallow stock rom( if available for my sprint version). But presently lollipop is ok. I cant find the system.img. can you please provide me a link of the lollipop flash files please??
Click to expand...
Click to collapse
I assumed that system.img was provided in links above. It isn't.
So here:
http://downloads.codefi.re/autoprime/LG/LG_G3/LS990/stock_partitions/ZVB/
Download zips only. Flash them, no need to use dd command. It is prerooted Lollipop. Again credits to @autoprime.
And perhaps if you would like to check Marsmallow here's a thread:
http://forum.xda-developers.com/lg-g3/development/rom-lge-d855-android-marshmallow-ported-t3285025

NatusVincere said:
I assumed that system.img was provided in links above. It isn't.
So here:
http://downloads.codefi.re/autoprime/LG/LG_G3/LS990/stock_partitions/ZVB/
Download zips only. Flash them, no need to use dd command. It is prerooted Lollipop. Again credits to @autoprime.
And perhaps if you would like to check Marsmallow here's a thread:
http://forum.xda-developers.com/lg-g3/development/rom-lge-d855-android-marshmallow-ported-t3285025
Click to expand...
Click to collapse
Thanks a lot. I checked the marshmallow post. i found that it has some issues. Am i right?? Data is no working and some call issues also. Is there any other Marshmallow stock feel rom??
so as you said to flash, flashing system.zip and modem .zip is enough?? What about boot.img,tz.img and rpm.img?

krishna13 said:
Thanks a lot. I checked the marshmallow post. i found that it has some issues. Am i right?? Data is no working and some call issues also. Is there any other Marshmallow stock feel rom??
so as you said to flash, flashing system.zip and modem .zip is enough?? What about boot.img,tz.img and rpm.img?
Click to expand...
Click to collapse
I would wait for MM to settle a bit, some guys have icons problem, some LTE, some stuff is downgraded to work properly. How ever you go, you will not get clean MM. Only if you do not want root, and that is a no-no for me.

krishna13 said:
Thanks a lot. I checked the marshmallow post. i found that it has some issues. Am i right?? Data is no working and some call issues also. Is there any other Marshmallow stock feel rom??
so as you said to flash, flashing system.zip and modem .zip is enough?? What about boot.img,tz.img and rpm.img?
Click to expand...
Click to collapse
You checked Marsmallow post, that's how it is. I have d855 so I have official Marsmallow, cant tell you about that port. You can always test it if you wish then revert back.
Yes flash zips only. All those partitions are provided in them (LG-LS990ZVB-Flashable.Modem.RPM.TZ.zip; LG-LS990ZVB-Flashable.System.Boot.zip).

NatusVincere said:
You checked Marsmallow post, that's how it is. I have d855 so I have official Marsmallow, cant tell you about that port. You can always test it if you wish then revert back.
Yes flash zips only. All those partitions are provided in them (LG-LS990ZVB-Flashable.Modem.RPM.TZ.zip; LG-LS990ZVB-Flashable.System.Boot.zip).
Click to expand...
Click to collapse
I flashed it but after booting android process is force closing for every 5 seconds and its showing the same message. So I went into recovery menu, wiped dalvik cache and cache,data and system and made a factory reset again and rebooted it. But my phone stuck on LG logo only. Now i can't even enter into TWRP Recovery . What to do?? Flashing tot is only the solution? I can go into download mode..
Edit: I tried going to TWRP manually. First I tried by going to recovery mode by watching a video showing holding volume down+power button and release after the LG logo is seen and within half second again should hold back. That didn't work for me. I only holded volume down+power button untill I see "Recovery mode loading" screen and after 2 seconds it taken me to TWRP. I successfully re-flashed back the zip files again. Thanks for your help. but i am getting invalid sim and showing hands free activation on my phone.. So should I need to unlock it?? now big trouble with the sim problem.Can u provide any solution??
Edit 2: Even this I solved myself.. thanks a lot.Hitting thanks button

NatusVincere said:
You checked Marsmallow post, that's how it is. I have d855 so I have official Marsmallow, cant tell you about that port. You can always test it if you wish then revert back.
Yes flash zips only. All those partitions are provided in them (LG-LS990ZVB-Flashable.Modem.RPM.TZ.zip; LG-LS990ZVB-Flashable.System.Boot.zip).
Click to expand...
Click to collapse
I cant find APN settings. So cant able to access data. Any help again??

krishna13 said:
I flashed it but after booting android process is force closing for every 5 seconds and its showing the same message. So I went into recovery menu, wiped dalvik cache and cache,data and system and made a factory reset again and rebooted it. But my phone stuck on LG logo only. Now i can't even enter into TWRP Recovery . What to do?? Flashing tot is only the solution? I can go into download mode..
Edit: I tried going to TWRP manually. First I tried by going to recovery mode by watching a video showing holding volume down+power button and release after the LG logo is seen and within half second again should hold back. That didn't work for me. I only holded volume down+power button untill I see "Recovery mode loading" screen and after 2 seconds it taken me to TWRP. I successfully re-flashed back the zip files again. Thanks for your help. but i am getting invalid sim and showing hands free activation on my phone.. So should I need to unlock it?? now big trouble with the sim problem.Can u provide any solution??
Edit 2: Even this I solved myself.. thanks a lot.Hitting thanks button
Click to expand...
Click to collapse
krishna13 said:
I cant find APN settings. So cant able to access data. Any help again??
Click to expand...
Click to collapse
Troublesome. I have no knowledge what "hands free activation" is. I belive it's something connected with Sprint?
As for the invalid SIM, was your phone SIM locked? Where did you buy it and why did it even have d855 system flashed onto it if its ls990?
Can you make calls and have you made a backup of your old system in TWRP before flashing?

NatusVincere said:
Troublesome. I have no knowledge what "hands free activation" is. I belive it's something connected with Sprint?
As for the invalid SIM, was your phone SIM locked? Where did you buy it and why did it even have d855 system flashed onto it if its ls990?
Can you make calls and have you made a backup of your old system in TWRP before flashing?
Click to expand...
Click to collapse
I followed one link and replaced some files and got the signal back. But I am unable to access data in my phone. also in settings i am seeing activate this device. I disabled hands free activation thing which is very annoying. But flashing any other lollipop rom, can I use data in my phone? Can you suggest any best lollipop rom like cloudy or other than cloudy?