Database Users

[Q] Flash stock with security error

Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.

did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:

kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
No problem if you brick a sammy phone. its easy to flash stock rom. How did you brick your g2?
---------- Post added at 08:13 PM ---------- Previous post was at 08:11 PM ----------
lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
Totally at a loss at this point.
Click to expand...
Click to collapse
Why did flashing a rom leads you to that error? Sorry but not familiar with your roms but is this rom really for your LG G2 model?

lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.
Click to expand...
Click to collapse
Hey I'm in the exact same position as you... did you manage to figure out a way to get into recovery?

kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
twrp corrupted my cache partition and the phone could not boot. i tried to flash cwm while in twrp and i guess i messed up recovery and/or boot partitions. al i could get was fastboot. i flashed a boot.img i got from somewhere in here. now it says security error and it does not boot. it does not enter into fasboot. i can enter into recovery mode but it is the stock lg recovery and if i choose "delete all data", which is the only option, it gives an error and restarts.
if i try to flash stock firmware as described in this post it stops at 49%.

kureta said:
twrp corrupted my cache partition and the phone could not boot. i tried to flash cwm while in twrp and i guess i messed up recovery and/or boot partitions. al i could get was fastboot. i flashed a boot.img i got from somewhere in here. now it says security error and it does not boot. it does not enter into fasboot. i can enter into recovery mode but it is the stock lg recovery and if i choose "delete all data", which is the only option, it gives an error and restarts.
if i try to flash stock firmware as described in this post it stops at 49%.
Click to expand...
Click to collapse
I am on the same boat, same problem, and don't know what else to do...hope someone could help us out.

Yep me to same issue. Pretty much tried 6 different methods and still stuck

Solution
IF you still have guys this issue i have solusion for you .
This happened to me yesterday too
1. Download ADB drivers for LG G2 LINK
2. Download LG Mobile Support Tool you can find this here LINK
3. HOLD VOLUMEUP + POWER button to enter the download mode and connect your device to pc
4. Run LG Mobile Support Tool ( if your device vas found click settings select upgrade firmware this will download for you 1.9 GB STOCK FIRMWARE
5. Enjoy your mobile

Any luck anyone? I can't get the suggestion in the last post to work because my phone just goes from the LG Logo to Security Error. I can't get to download mode. Or recovery. Or get ABD to see it.

Odd
quatrix1 said:
IF you still have guys this issue i have solusion for you .
This happened to me yesterday too
1. Download ADB drivers for LG G2 LINK
2. Download LG Mobile Support Tool you can find this here LINK
3. HOLD VOLUMEUP + POWER button to enter the download mode and connect your device to pc
4. Run LG Mobile Support Tool ( if your device vas found click settings select upgrade firmware this will download for you 1.9 GB STOCK FIRMWARE
5. Enjoy your mobile
Click to expand...
Click to collapse
i have to choose upgrade recovery and it gets past analyzing then doesnt show a bar for downloading software...

HELP!!!!!!!!!!!!!!!!!!!!!
Can someone help me I successful in installing twrp though autorec apk and the same for rooting my g2. I flashed cm with nightlies and noticed that twrp had a update. I downloaded the zip and try flashing it like flash a recovery in flashify but that din't work and readed that zip flashing though twrp didn't work but renumber this video and though it would update my recovery to 2.7.1 but it was successful in doing so but when I got to recovery it was 2.7.0. That not the problem form there I tried to boot into my system. Then it turn off though that I passed power off instead but when turn my g2 back on I found that I had a security error show up then turn back off. So can someone help show me a tutorial on unbick or a way to remove error. Also I have the d800 and i have some idea without going though unbicking a hard factory rest or flasing twrp form there site in fastboot. Finally that lg mobile support tool say that im up to date. I think doing the autorec twrp recovery locked as my phones recovery like trying to flash a rom with a locked bootloader.

Ok guys i trying to help cause it happen to me too,sorry for my english too slow but i try,when you try go twrp with volume up+power buttom it still show security errow,that ok your device not hardbrick yet,when you try volume down+power buttom it show hard reset it does mean it clear all rom,picture in internal but it go to twrp again,and them just flash another rom in your device and it done,have great day piece

I had the same problem on my G2 was using twrp to flash cyanogenmod not sure what i did and phone rebooted to show security error message. I entered recovery mode (power and volume down release when logo pops up and press power and volume down again hold for a second then tap both buttons a few times) pulled up the option to factory reset so i did and it booted me into twrp and allowed me to flash cyanogenmod correctly this time and the phone started back up with no problems. hope this can help someone else as well.

Anybody know the solution?
I also have the security error boot loop after flashing KK baseband files... I tried to enter recovery mode by holding vol down & power button but it wont work...
it does work when i enter download mode (vol up + power button), but i don't want to have to download the stock LG ROM..
anybody know how to by pass the security error boot loop to allow me to reflash?

kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
if you still bricked. try this
get your tools from here: http://forum.xda-developers.com/showthread.php?t=2432476
keep reading or follow above thread. both will work.
best of luck.
After all the drivers installed correctly
make sure your phone is connected to the
com41 port change it if it already not ( Under device manager > Go to Ports (COM & LPT). You should see LGE AndroidNet etc... Right click it and go to Properties > Port Settings > Advanced > Change COM Port Number to COM41 > OK > OK > Close Device Manager )
run flash tool
1. choose type CDMA
2. chose PhoneMode: DIAG
leave rest as it is.
3. choose your kdz file.
then go to download mode
1. power off
2. press and hold vol + key and plug usb cable
3. done )
We have go 2 flashing modes.
1. Normal Flash is for flash with keeping data
2. CSE flash is totally new start preffered.
hope this helps.

thanks but it was a long time ago and I further messed up things, ended up sending it for warranty. they have replaced the device.

me too messed up my cell 1st i was on cloudy g2 v2.1 installed cm11 nightlies but the camera was not so good so then installed cloudy g2 v2.1 n since then i was having problem regarding sound during call and also some hard noise like siren starts randomly, i searched alot but didnt got any solution. wiped all many times (including internal storage ). but no luck then i thought i might be baseband error so i just downloaded auto recovery n flashed it n then stuck into security error but thank GOD i had custom rom in my sd card that time i flashed it back but still em having the sound error.

lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.
Click to expand...
Click to collapse
kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
k2thejx5 said:
Yep me to same issue. Pretty much tried 6 different methods and still stuck
Click to expand...
Click to collapse
Hey guys, I was in the same boat for a little but was able to fix it by downloading the 801C firmware and flashing it. The firmware file should be a KDZ extension and you should also download LG Flash Tool 2014. Turn the phone on by holding the Power button and Volum up while it is plugged into your computer(It has to be plugged into a computer with LG phone drivers or it won't work).
Follow this tutorial and you will be set.
http://www.droidviews.com/how-to-restore-lg-g2-to-stock-firmware/
Start at step 17 on Method 1 and you should be golden.
Hope this helps guys!

i can't Root my H870 Device :( Help

Hi guys
i have a h870 G6, today i have unlocked Bootloader for Rooting my device
i Followed this thread
[GUIDE] Official LG G6 Bootloader Unlock (Currently supported: EU H870, USA US997)
but i can't pass the 9th stage
i flashed the phone with twrp.img and Reboot the phone in recovery mode, i can see the Factory Reset screen, i have clicked on the first and second YES, the data is erased ( no problem i have a backup ) but i dont know what doing after this stage the phone is rebooted to the normale mode now.
please help me to rooting my device please.

Android Oreo said:
Hi guys
i have a h870 G6, today i have unlocked Bootloader for Rooting my device
i Followed this thread
[GUIDE] Official LG G6 Bootloader Unlock (Currently supported: EU H870, USA US997)
but i can't pass the 9th stage
i flashed the phone with twrp.img and Reboot the phone in recovery mode, i can see the Factory Reset screen, i have clicked on the first and second YES, the data is erased ( no problem i have a backup ) but i dont know what doing after this stage the phone is rebooted to the normale mode now.
please help me to rooting my device please.
Click to expand...
Click to collapse
After flashing the TWRP you need to reboot in recovery with the combination explained in that thread, if you don't reach the reset you'll have to flash the TWRP again.

Killua96 said:
After flashing the TWRP you need to reboot in recovery with the combination explained in that thread, if you don't reach the reset you'll have to flash the TWRP again.
Click to expand...
Click to collapse
thanks for you reply
after flashing with twrp, i rebooted my phone in recovery mode and i get the white screen ( have only YES or No for erase data ) and i don't know what do after that.

Android Oreo said:
thanks for you reply
after flashing with twrp, i rebooted my phone in recovery mode and i get the white screen ( have only YES or No for erase data ) and i don't know what do after that.
Click to expand...
Click to collapse
If the phone didn't reboot once between the flash of TWRP and the boot trough combination in recovery you have to confirm yes two times and you'll enter in TWRP

Killua96 said:
If the phone didn't reboot once between the flash of TWRP and the boot trough combination in recovery you have to confirm yes two times and you'll enter in TWRP
Click to expand...
Click to collapse
Thanks bro
after 2 Yes the phone reboot on recovery mode and i installed SuperSu, and DONE
another question ! How delete the first screen ( g.co/abh ) if you know Sir ! and thanks for your help

Android Oreo said:
Thanks bro
after 2 Yes the phone reboot on recovery mode and i installed SuperSu, and DONE
another question ! How delete the first screen ( g.co/abh ) if you know Sir ! and thanks for your help
Click to expand...
Click to collapse
It's not possible to remove It

Bricked PRA-LA1

Hello, i have a GR3 model PRA-LA1 and i really messed up !
I flashed TWRP so that i could root the phone, i full wiped the phone after that i got a bootloop so that i could restore my backup, and that's when i found out that my twrp doesn't support restoration due to a version bug..
I accidentally and stupidly locked the bootlaoder again.
So now i got a phone without system/data, no firmware installed, I can't access to download mode due to locked bootlaoder and can't find a way to unlock it again because even the PC don't detect the device anymore, there's no more twrp, replaced by the useless eRecovery with the getting package info failed erreur when downloading the firmware from the Huawei eRecovery server..
When i boot the phone, it boots with the normal logo and then i have a black screen with nav bar buttons and the only action possible is the power menu => shutdown/reboot device.

googort said:
Hello, i have a GR3 model PRA-LA1 and i really messed up !
I flashed TWRP so that i could root the phone, i full wiped the phone after that i got a bootloop so that i could restore my backup, and that's when i found out that my twrp doesn't support restoration due to a version bug..
I accidentally and stupidly locked the bootlaoder again.
So now i got a phone without system/data, no firmware installed, I can't access to download mode due to locked bootlaoder and can't find a way to unlock it again because even the PC don't detect the device anymore, there's no more twrp, replaced by the useless eRecovery with the getting package info failed erreur when downloading the firmware from the Huawei eRecovery server..
When i boot the phone, it boots with the normal logo and then i have a black screen with nav bar buttons and the only action possible is the power menu => shutdown/reboot device.
Click to expand...
Click to collapse
unlock the bootloader and flash the main image
find the unlock code on this site

want2play said:
unlock the bootloader and flash the main image
find the unlock code on this site
Click to expand...
Click to collapse
How am i gonna unlock it if the PC can't detect even detect the device !

I didn't understand that the phone was no longer recognized by PC, sorry
Nothing, so it does not even start in fastboot mode? when you start the phone do you have continuous restart?

want2play said:
I didn't understand that the phone was no longer recognized by PC, sorry
Nothing, so it does not even start in fastboot mode? when you start the phone do you have continuous restart?
Click to expand...
Click to collapse
No, it does boot normally, when the boot logo finish i have a black screen with the nav bar as shown in the photo below, and the only action possible is with power button ==> restart or shutdown yhe device

googort said:
No, it does boot normally, when the boot logo finish i have a black screen with the nav bar as shown in the photo below, and the only action possible is with power button ==> restart or shutdown yhe device
Click to expand...
Click to collapse
Reflash System! Seems Your System img is corrupted!

RootingPro-18 said:
Reflash System! Seems Your System img is corrupted!
Click to expand...
Click to collapse
Ok, thanks, but how ? Bootloader locked, no fastboot mod, device not recognized by pc, no twrp, only yhe useless eRecovery of Huawei..

googort said:
Ok, thanks, but how ? Bootloader locked, no fastboot mod, device not recognized by pc, no twrp, only yhe useless eRecovery of Huawei..
Click to expand...
Click to collapse
Force it to update! Download Latest firmware and you know.

RootingPro-18 said:
Force it to update! Download Latest firmware and you know.
Click to expand...
Click to collapse
No I don't, how am i gonna force it ? Can't boot it to fastboot, no costum recovery and bootloader locked !

googort said:
No I don't, how am i gonna force it ? Can't boot it to fastboot, no costum recovery and bootloader locked !
Click to expand...
Click to collapse
Put Update.app in sd card and Press Volume up and Down at same time with power button pressed! (All 3 buttons at same time) And it will start updating! Don't forget to release power button after huawei logo appears!

RootingPro-18 said:
Put Update.app in sd card and Press Volume up and Down at same time with power button pressed! (All 3 buttons at same time) And it will start updating! Don't forget to release power button after huawei logo appears!
Click to expand...
Click to collapse
Could you give me a link plz? Can't find the app

googort said:
Could you give me a link plz? Can't find the app
Click to expand...
Click to collapse
Thats firmware package, extract from update.zip

googort said:
Could you give me a link plz? Can't find the app
Click to expand...
Click to collapse
I understand the pain. Here is a link for those who might still need it
visitlink.download/8zHc

Need help

I'm trying to intall twrp in my lg g6 and unlock the bootloader and all very well, the problem is that when I want to enter into recovery mode I stay in this image and usually start ..... some advice

Your device is corrupt.......help

Pleeez help

bilalino said:
Pleeez help
Click to expand...
Click to collapse
hm, no idea honestly, have u tried going into download mode?

why? and Have you try with LG Bridge with Recovery Update ?
Steps...
1.LG G6 Download Mode
2.Plug a USB cable into your computer (not into the LG G6 yet)
3.Power down the LG G6
4.Press and hold the Volume Up button
5.Connect the USB cable to the LG G6
6.Continue holding the Volume Up button until it boots into Download Mode
And then go to LG Bridge and click Update REcovey with internet Access (Lg Bridge need to download around 3GB)

(Re)-unlock the bootloader?

https://thedroidguy.com/2018/05/pix...ed-may-not-work-properly-error-issues-1076400

Thnks my phone now alive?
I flash melina twrp
Install aosp rom
Boot to recovery
Install stock rom whith uppercut
Relock bootloader
All is ok now