Hello
A brief timeline of events leading to this thread:
1. I purchased a G-Flex2 H950 from Ebay for $250 and was supposed to be upgrading from a Galaxy S4-I337.
2. Received my device yesterday and set out to update to 5.1.1 & root the device to remove bloatware.
3. I was able to update to 5.1.1 V11x using my StraightTalk sim on AT&T network.
4. After many frustrating hours of trying to root using different methods, I finally was able to root using the technique mentioned in this thread: http://forum.xda-developers.com/g-flex2/development/root-easy-root-att-flex-2-5-1-1-t3178354
5. A nice complement to point "4" above was the firmware update to 5.1.1 V11z.
6. Extremely happy that I was ready to rock, I set out to delete all the bloatware from my device.
7. First surprise obviously was the inability to remove a bunch of AT&T apps because "APK could not found" error.
8. Like the idiot that I am, I went ahead and deleted the "rootsystem.img" from the internal memory (unnecessarily, blame my OCD!).
9. Now after I finished de-bloating the device (or so I thought), I rebooted it and to my horror... I see the error message:
LG Security Error
Authentication Fail #9
10. I attempted to get to the recovery mode and deleted/erased all data & settings. No dice!
11. I'm still able to get to the download mode using the Volume-Up & USB connect method (& this is why I'm cursing myself at point "8" because I could have re-used the easy root method again to flash the img file).
12. I tried to use the "LG Mobile Support Tool", it recognizes the device correctly as "LGH950" but says V11z is the latest software update.
My question to experts: How SOL am I? I don't think LG would honor my warranty since the purchase is NOT from a authorized dealer/reseller. So no chance of warranty repair/replacement, no?
I looked everywhere (for close to 10 hours) for KDZ & TOT files to even attempt something. But I couldn't find anything for H950. Man, I hate AT&T so much now... Why couldn't they just leave the bootloader unlocked? Or LG (AT&T?)even provide the necessary files to start off with?
Could someone with more knowledge please offer any help? Meanwhile, I've pretty much resigned to be joining the queue full of others with bricked H950's...
From what I've heard LG goes by the S/N and date of manufacturing just like Lenovo for warranty. You can just ask their customer service if the warranty is active for your phone.
As for recovering it all you would've needed to do was use the tool as you stated. I have commented many times explaining people should only disable/freeze bloat and not *delete* anything (there are some crucial system apps, editing build prop seems to cause loops for me for ex.). There was another member in this situation if I remember correctly.
In case you can't go the warranty route ask Sj if he has found a way to push files while the phone is in DL mode.
Sent from my XT1528
Hi i have the same problem, I rename many apps in system folder of my ls996 zv8 and now the phone no boot and only show "LG Security Error"
I tried to rename the files in download mode but system partition is mounted as read only, and also fails when attempting to mount this in rw.
In 5.1.1 the download mode remove the option to read files from sd card.
I tried to mount the sd card, but I had no luck.
The sd-card is located in /sys/block/mmcblk1
cat /proc/partitions show: 179 64 1921024 mmcblk1
Click to expand...
Click to collapse
mount -t vfat -o rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,g id=1023,fmask=0007,dmask=0007,allow_utime=0020,utf 8 /dev/block/vold/179:65 /data/media/1 , fail to mount
Click to expand...
Click to collapse
maxie.maverick said:
Hello
LG Security Error
Authentication Fail #9
10. I attempted to get to the recovery mode and deleted/erased all data & settings. No dice!
11. I'm still able to get to the download mode using the Volume-Up & USB connect method (& this is why I'm cursing myself at point "8" because I could have re-used the easy root method again to flash the img file).
12. I tried to use the "LG Mobile Support Tool", it recognizes the device correctly as "LGH950" but says V11z is the latest software update.
My question to experts: How SOL am I? I don't think LG would honor my warranty since the purchase is NOT from a authorized dealer/reseller. So no chance of warranty repair/replacement, no?
I looked everywhere (for close to 10 hours) for KDZ & TOT files to even attempt something. But I couldn't find anything for H950. Man, I hate AT&T so much now... Why couldn't they just leave the bootloader unlocked? Or LG (AT&T?)even provide the necessary files to start off with?
Could someone with more knowledge please offer any help? Meanwhile, I've pretty much resigned to be joining the queue full of others with bricked H950's...
Click to expand...
Click to collapse
hey have u been able to fix the issue ??
as i just got the ls996 sprint g flex 2, and some how i renamed wrong system file, and got the same issue
my phone is stuck on
SECURITY ERROR
AUTHENTICATION ERROR #9
please help me out if someone around found a solution
same problem here
Security error authentication fail #9 on Lg tribute 2 LGLS665
Hello,
I am stuck on security error authentication fail #9 on Lg tribute 2 LGLS665 at start up.
Got this error when rename the Lgstartupwizard.apk to Lgstartupwizard.bak.
Please Help.........
Same phone and problem as op. H950 V11X Rooted "Authentication Failure #9". Anyone ever figure this out?
We just need someone with the H950 KDZ
Maybe as a G2 user I'm overlooking something but - why not download the kdz from http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=XXXXXX (put your IMEI instead of Xs), eh?
Security Error
Thanks for the link ..
Its not helping me on Lg tribute 2 LGLS665. Below is the text received.
I have replaced the MEID number below with "X".
<response req_cmd="auth_model_check" status="OK">
<auth_model_check>
<result>2</result>
<esn>XXXXXXXXXXXXXX</esn>
<model>LGLS665</model>
<suffix>AVGMBLH</suffix>
<msn>XXXXXXXXX</msn>
<esn_date/>
<sw_version/>
<sw_url/>
<sw_locale_url/>
<sw_recommand_uri/>
<app_version/>
<app_url/>
<cs_em_flag>N</cs_em_flag>
<cs_em_uri>N</cs_em_uri>
<chip_type/>
<prod_type/>
<buyer>VGM</buyer>
<file_name/>
</auth_model_check>
</response>
mwedo said:
Maybe as a G2 user I'm overlooking something but - why not download the kdz from http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=XXXXXX (put your IMEI instead of Xs), eh?
Click to expand...
Click to collapse
Hey man, thanks for the suggestion, but tried that too. Did not get an option to download the kdz when I entered IMEI. Here's the screenshot I get.
hi sorry to bump in
but i made the huge mistake in renaming system apps, so now bootloop and same security error condition with a ls996 zv6,
1.- i know that don't even think to try to downgrade from zv6 to zv5 tot= Brick.
2.- is there a way to push, copy (aroma file manager, twrp file manager), in normal or stock recovery?
3.- is there a way to flash rootedsystem.img zv6 to the phone in: recovery, fastboot or even the command:
Step 11 flash commands:
For LS996 (ZV6/ZV7/ZV8)
Code:
dd if=/data/media/0/rootedsystem.img bs=8192 seek=58368 count=522240 of=/dev/block/mmcblk0, from another source, rather than from internal sd, because obviously i didn't copied to the device previously?
4.- already tried to flash from stock recovery, the ZV6 Update= update.zip but it gives an error to load because some system app not valid, i remember
please, if someone could help me and us with this problem
thank you very much indeed
atv said:
but i made the huge mistake in renaming system apps, so now bootloop and same security error condition with a ls996 zv6,
1.- i know that don't even think to try to downgrade from zv6 to zv5 tot= Brick.
2.- is there a way to push, copy (aroma file manager, twrp file manager), in normal or stock recovery?
3.- is there a way to flash rootedsystem.img zv6 to the phone in: recovery, fastboot or even the command:
Step 11 flash commands:
For LS996 (ZV6/ZV7/ZV8)
Code:
dd if=/data/media/0/rootedsystem.img bs=8192 seek=58368 count=522240 of=/dev/block/mmcblk0, from another source, rather than from internal sd, because obviously i didn't copied to the device previously?
4.- already tried to flash from stock recovery, the ZV6 Update= update.zip but it gives an error to load because some system app not valid, i remember
please, if someone could help me and us with this problem
thank you very much indeed
Click to expand...
Click to collapse
Only solution is to send it back to LG.
There is no way (yet) to flash with dd command from external SD.
and there is no other tot besides ZV5 and as you said thats a Hard brick.
hi
Alex_XV6700 said:
Only solution is to send it back to LG.
There is no way (yet) to flash with dd command from external SD.
and there is no other tot besides ZV5 and as you said thats a Hard brick.
Click to expand...
Click to collapse
thank you very much indeed for your answer, but as another reply i posted, as question in other thread, read this, maybe a solution if semi bricked, LG security error, in: zv06, zv07 or zv08, if it turns to be truth....
hi...... there is a forum member form another site that claims to have a zv8 rooted tot to sell, but i'm not sure if its true or reliable, claims that it fix bricks and its a 4.3 gb file, does anybody knows about it?
any help or guide please, thank you very much indeed
File name:LGLS996AT-00-ZV8-SPR-US-AUG-18-2015+01.zip
Android OS version:5.1
File Download:
Buy topic
Existing 2 People buy This topic is to be paid to the author 1000 Credits Before viewing
This TOT firmware contains the ROOT authority, after the success of flashing, ROOT success
TOT firmware flashing effect:
1.brick the repair
2, upgrade ROM
3, downgrade ROM
4, remove the lock screen password
5, Clear Google locks
6, restore factory settings
Tips:
1,This TOT firmware suitable for LGFlashTool.
2,After the purchase of the post, hidden content will be displayed, then you can free download attachments.
3,After purchase is successful, the second time to visit this page does not appear charges prompt.
atv said:
thank you very much indeed for your answer, but as another reply i posted, as question in other thread, read this, maybe a solution if semi bricked, LG security error, in: zv06, zv07 or zv08, if it turns to be truth....
hi...... there is a forum member form another site that claims to have a zv8 rooted tot to sell, but i'm not sure if its true or reliable, claims that it fix bricks and its a 4.3 gb file, does anybody knows about it?
any help or guide please, thank you very much indeed
File name:LGLS996AT-00-ZV8-SPR-US-AUG-18-2015+01.zip
Android OS version:5.1
File Download:
Buy topic
Existing 2 People buy This topic is to be paid to the author 1000 Credits Before viewing
This TOT firmware contains the ROOT authority, after the success of flashing, ROOT success
TOT firmware flashing effect:
1.brick the repair
2, upgrade ROM
3, downgrade ROM
4, remove the lock screen password
5, Clear Google locks
6, restore factory settings
Tips:
1,This TOT firmware suitable for LGFlashTool.
2,After the purchase of the post, hidden content will be displayed, then you can free download attachments.
3,After purchase is successful, the second time to visit this page does not appear charges prompt.
Click to expand...
Click to collapse
Well I wouldnt trust this.
But if this only flashes the system partition well it shouldnt be harmful. You could download the zv6 stock sys.img and flash it afterwards so you can ota update your phone to zv9 and then root again.
But like I said I wouldnt suggest that...
Alex_XV6700 said:
There is no way (yet) to flash with dd command from external SD.
Click to expand...
Click to collapse
Why no? You can use Push_file.exe.
MAXIMATOR said:
Why no? You can use Push_file.exe.
Click to expand...
Click to collapse
Please, elaborate....
jplum22 said:
Please, elaborate....
Click to expand...
Click to collapse
https://www.google.com.ua/#q=Push_file.exe
---------- Post added at 11:30 AM ---------- Previous post was at 11:26 AM ----------
LS9960 ZV6 with
LG Security Error
Authentication Fail #9
was secsessfuly unbricked without SDcard using Push_file.exe for send system.img to internal sdcard
Well this is new @MAXIMATOR at least it is to me.
If you let me I can add this to my back to stock forum.
Push_file.exe can not send files larger than 16 MB . the image to be split into files no more than 16 MB , after which they can be sent to the device . On the device, combined to one file.
MAXIMATOR said:
Push_file.exe can not send files larger than 16 MB . the image to be split into files no more than 16 MB , after which they can be sent to the device . On the device, combined to one file.
Click to expand...
Click to collapse
I've already tried. It doesn't work. Files can not be combined.
http://forum.xda-developers.com/g-flex2/help/to-unbrick-g-flex-2-ls996-t3286105