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!

Reformatted /system, can't install new rom

I wanted to completely reformat my phone as my phone was buggy with Cyanogen Mod 12, so I formated everything.
The problem is that my PC was not detecting the drivers when in recovery mode, so I couldn't side-load with ADB, and I have no way of getting a .zip on to it.
I tried re-installing the clockwork mod using ODIN but it would just crash the application. I then tried heimdall and that said it installed it (I was hoping that it would fix adb)
Now I can't boot in to the clockwork mode recovery as it just instantly turns the phone off, however I can just boot normally in to the Galaxy S4 logo screen.
When I'm in the logo screen I do have access to ADB, however my phone is unathorised and I have no way to authorise it.
How can I A) fix clockwork recovery so it works again and B) put a zip on the phone or fix ADB detecting my device in recovery?

If you can get into download mode, flash a full stock ROM via Odin and start again

DSA said:
If you can get into download mode, flash a full stock ROM via Odin and start again
Click to expand...
Click to collapse
That worked great, thanks.

no probs, i find it to be a pretty good fall back in case of issues (just annoying reinstalling games etc..)

[Hard brick] recovery bootloop: no recovery mode, no download mode accessible

Hi,
I was flashing twrp with flashify when I just rebooted in recovery and since that moment my phone is stuch on an infinite bootloop showing me the:
"Recovery booting (recovery is not seandroid enforcing...)"
I'm plugging off the battery for some hours, but when plugged in nothing changed.
My phone has the usb port broken, so I can use it only to charge the battery, but no pc will recognize it.
Since the fact that I can't access download mode, or recovery mode to restore a nandroid backup, It's insane to buy a usb port to change it on the phone and try to link to a pc?
I mean, is there a way to access download mode?
Does JIG usb work in this situation of hard brick?
Any advice?
Thanks for answering.

whychange said:
Hi,
I was flashing twrp with flashify when I just rebooted in recovery and since that moment my phone is stuch on an infinite bootloop showing me the:
"Recovery booting (recovery is not seandroid enforcing...)"
I'm plugging off the battery for some hours, but when plugged in nothing changed.
My phone has the usb port broken, so I can use it only to charge the battery, but no pc will recognize it.
Since the fact that I can't access download mode, or recovery mode to restore a nandroid backup, It's insane to buy a usb port to change it on the phone and try to link to a pc?
I mean, is there a way to access download mode?
Does JIG usb work in this situation of hard brick?
Any advice?
Thanks for answering.
Click to expand...
Click to collapse
You need a working usb to flash a custom recovery or an offical fw. I thought flashify needs root access to work?. Or if you already have root, you could adb to flash twrp but it's too late now.
Try getting into download mode. When it asks to proceed or cancel, choose cancel. Some people are lucky that the phone boot into system again but they need to fix the broken recovery later.
Sent from my SM-G925F

Rosli59564 said:
You need a working usb to flash a custom recovery or an offical fw. I thought flashify needs root access to work?. Or if you already have root, you could adb to flash twrp but it's too late now.
Try getting into download mode. When it asks to proceed or cancel, choose cancel. Some people are lucky that the phone boot into system again but they need to fix the broken recovery later.
Sent from my SM-G925F
Click to expand...
Click to collapse
After 2 months of battery out, finally I got download mode to work, and pressing cancel my phone started.
Thanks.
But now it seems that there is no custom recovery installed, so when i go in custom recovery, the loop starts again.
How may I install again a custom recovery, knowing that:
1) I can't connect to pc, cm 12.1 has a bug, no pc recognizes my phone;
2) rom manager doesn't install any custom recovery on my phone;
3) flashify made my phone in boot loop, and I can't understand what I was wrong 2 months ago.
Thank you, man.

See your other post man .

Flash the tar version of TWRP using Odin. If there is no tar version, you can use Cygwin to convert an img file to a tar file.

SM-G925W8, I tried flash custom rom and now my phone won't boot. HELP

SM-G925W8, I tried flash custom rom and now my phone won't boot. HELP. I can't access download mode I all methods I simply can't access it but I can access recovery mode and use adb side load. How do I flash stock rom?? I tried and it won't let me.. fast boot won't work. I can't access anything except the recovery mode. I have tried wipe cache and factory reset.. won't work!! help!

pnbamania said:
SM-G925W8, I tried flash custom rom and now my phone won't boot. HELP. I can't access download mode I all methods I simply can't access it but I can access recovery mode and use adb side load. How do I flash stock rom?? I tried and it won't let me.. fast boot won't work. I can't access anything except the recovery mode. I have tried wipe cache and factory reset.. won't work!! help!
Click to expand...
Click to collapse
I think i need flashable zip? how do I create this?

Just hold Home+Vol down+Power until Your phone boots into Download mode.
What rom did You try to flash?(link) No matter what rom You flash, Download Mode won't ever disappear. I've broke my device with odin couple of times (literally flashed everything. Even broken kernels) and I always could go into Download Mode.
And You use adb sideload like this:
adb sideload your_rom.zip
And it should first push the rom to Your device and then flash it. But with stock recovery I think that You'll get signature error.
Edit: G925W8 is a S6 Edge. Not S7 Edge btw.

ProtoDeVNan0 said:
Just hold Home+Vol down+Power until Your phone boots into Download mode.
What rom did You try to flash?(link) No matter what rom You flash, Download Mode won't ever disappear. I've broke my device with odin couple of times (literally flashed everything. Even broken kernels) and I always could go into Download Mode.
And You use adb sideload like this:
adb sideload your_rom.zip
And it should first push the rom to Your device and then flash it. But with stock recovery I think that You'll get signature error.
Edit: G925W8 is a S6 Edge. Not S7 Edge btw.
Click to expand...
Click to collapse
I tried holding them down so many times! won't let me and I am flashing the G935W8VLU2API1_G935W8OYA2API1_TLS.zip
I renamed it to update.zip too but it's not letting me the contents look like this
https://gyazo.com/881d51456f4cd03ecc6ad7b16611712a
It's G935W8 Sorry for the typo

Ahahahah :laugh: It's not a recovery flashable package lol. You can only flash those files with ODIN.
Try that:
Download this rom: https://www.androidfilehost.com/?fid=24591000424964461
Flash it with sideload, hopefully It will work.
http://forum.xda-developers.com/s7-edge/help/samsung-sm-g935f-sm-g935w8-rom-t3414612 - people here said that it's quite safe.
What recovery do You use btw?

How to Unbrick Phone with no OS Installed?

Hello, Before starting this Thread i wanna say sorry for my bad english.
Want to Install Stock ROM Lollipop. But the System Cannot Flash/Install that ROM.
Previous, i'm using Ressurection Remix 5.8.5 . All Went Normally, Until i decided wanna back to Stock ROM and get this error.
Situations :
* The Device Stuck on Boot Logo, and No responsibility
* The Device cannot Reach Recovery, Adb, fastboot, even not detected in Device Manager when i Wanna try Flash using QFIL
* Vol Up+Down + Power Buttons Not Works, Only Blink Blue on screen and then reboot.
Chronologic
1. I'm using TWRP 3.2.1 , Wiped System, Data, Cache. And then start flashing Stock ROM
2. When Process, it says Update failed
3. Using Minimal ADB, I tried to flash Stock Lollipop Recovery. And failed.
4. Accidentally, i typed "Adb Reboot recovery.img" which should fastboot Boot Recovery.img
5. The Device rebooted and Stuck on Logo, Until Now
Anyone pls help, Any comment helpful very appreciated.
Thank You for ur attention.

Remove and re-insert the battery. Then hold volume down + power button and see if the phone boots into download mode. If it does, then connect it to a pc with adb installed and see if adb detects it. If all goes right, you could try to install twrp recovey and afterwards install stock firmware through it. Google search A6000_S056_150924_WC51.zip and download the firmware and copy it to the external sd card then flash using twrp.
Although guessing by the state of your phone it seems unlikely that this will work. But give it a try. Hope it helps.

Thanks! It Worked
user0u said:
Remove and re-insert the battery. Then hold volume down + power button and see if the phone boots into download mode. If it does, then connect it to a pc with adb installed and see if adb detects it. If all goes right, you could try to install twrp recovey and afterwards install stock firmware through it. Google search A6000_S056_150924_WC51.zip and download the firmware and copy it to the external sd card then flash using twrp.
Although guessing by the state of your phone it seems unlikely that this will work. But give it a try. Hope it helps.
Click to expand...
Click to collapse
I Try your Method, and its Worked. Now I can use my phone Use As usual.
Thank You very Much!

Thanks man you are so awesome successfully flashed Android lollipop ROM in my Lenovo A6000+ thank you so much

I need help tooo
user0u said:
Remove and re-insert the battery. Then hold volume down + power button and see if the phone boots into download mode. If it does, then connect it to a pc with adb installed and see if adb detects it. If all goes right, you could try to install twrp recovey and afterwards install stock firmware through it. Google search A6000_S056_150924_WC51.zip and download the firmware and copy it to the external sd card then flash using twrp.
Although guessing by the state of your phone it seems unlikely that this will work. But give it a try. Hope it helps.
Click to expand...
Click to collapse
I am having same issues but when its in download mode my pc shows alot of drives n asking me to format it n the downloder is not reading my phone n the fastboot is showing the remote error n adb doesnt detect my phone at all......i need helppp