Database Info

will I lose root on the latest OTA update?

As the title says - the latest OTA update, if I update will I lose root?
Thanks!

From what I understand, for a clean update OTA the firmware needs to be stock unrooted. The bootloader locked or unlocked.
Other people have succeeded in updating OTA with a modified system and able to patch, but it varies and it seems a lot of tweaking was involved after. I am no expert though.

eastdata said:
From what I understand, for a clean update OTA the firmware needs to be stock unrooted. The bootloader locked or unlocked.
Click to expand...
Click to collapse
Till yesterday i thought the same.
Seems like it works also when it is rooted.
[GUIDE] How To Update Rooted Moto G ( US Global GSM)
secretkloud said:
Then I tried again. It went smoothly. And I still have root
Click to expand...
Click to collapse

mokkami said:
Till yesterday i thought the same.
Seems like it works also when it is rooted.
[GUIDE] How To Update Rooted Moto G ( US Global GSM)
Click to expand...
Click to collapse
So if I understand that thread correctly, if a system file is modified, the update will fail? So adding files (su apk and binaries) doesn't create a situation where the update fails? ...This is my dilemma in trying to understand what modified actually means. It's been a while since attempting mods on a device and it was easier on my last one.
Off topic, will unlocking the bootloader allow access to the stock recovery? I can reboot into it, but any command from the menu just gives me a No command screen or reboots the device. I can't remember it being this convoluted on my old phone. Yes, I know that the up key selects and the down is to navigate...

i just flash stock recovery and then updated.
after update i still have root, so i just flash back TWRP

Backup with CWM, factory reset, update, restore data.

@kurt99 and @theoneofgod
What firmware are you running and what model (any mods)?
I imagine that OTA updates are different for each version firmware...

eastdata said:
So if I understand that thread correctly, if a system file is modified, the update will fail? So adding files (su apk and binaries) doesn't create a situation where the update fails? ...This is my dilemma in trying to understand what modified actually means. It's been a while since attempting mods on a device and it was easier on my last one.
Off topic, will unlocking the bootloader allow access to the stock recovery? I can reboot into it, but any command from the menu just gives me a No command screen or reboots the device. I can't remember it being this convoluted on my old phone. Yes, I know that the up key selects and the down is to navigate...
Click to expand...
Click to collapse
While it seems that OTAs are quite sensible to system changes whatever that means, it turned out that root doesn´t break the possibility to update.
You can access stock recovery with or without unlocked bootloader. This "no command screen" is a known thing and can easily be overcome by holding power and volume up buttons for 3 secs while on that screen.

drfr said:
You can access stock recovery with or without unlocked bootloader. This "no command screen" is a known thing and can easily be overcome by holding power and volume up buttons for 3 secs while on that screen.
Click to expand...
Click to collapse
Thanks so much (I've been living in Android 2.1 world). :angel:

Standard UK retail, rooted ran the OTA update with no issues, and remains rooted.

eastdata said:
@kurt99 and @theoneofgod
What firmware are you running and what model (any mods)?
I imagine that OTA updates are different for each version firmware...
Click to expand...
Click to collapse
Also Standard UK retail and remains rooted, also use XPOSED .

(HELP) LG GFlex 2 LS996 Bootloop in MINI OS after stock firmware flash

Hi it's the first time i post on XDA, i allways found what i need but this time...no solution.
i have an LG LS996 5.0.1 rooted after not possible to do an update.
i unroot the phone, factory reset, update....same resulte
i try to install the stock firmware. XDA Source tot file.....etc
the phone is stock on MINI OS screen for about 1 minute and reboot in the same screen.
i go to sprint, they don't want to replace the phone because the miniOS boot is not lg Bootloader and the unsurance wante me to pay 200$
to get a new one.
any help please.

lambo640 said:
Hi it's the first time i post on XDA, i allways found what i need but this time...no solution.
i have an LG LS996 5.0.1 rooted after not possible to do an update.
i unroot the phone, factory reset, update....same resulte
i try to install the stock firmware. XDA Source tot file.....etc
the phone is stock on MINI OS screen for about 1 minute and reboot in the same screen.
i go to sprint, they don't want to replace the phone because the miniOS boot is not lg Bootloader and the unsurance wante me to pay 200$
to get a new one.
any help please.
Click to expand...
Click to collapse
check this out http://forum.xda-developers.com/showpost.php?p=61530688&postcount=31

Google~Android said:
check this out http://forum.xda-developers.com/showpost.php?p=61530688&postcount=31
Click to expand...
Click to collapse
Big thank you.
worked very well.
my phone is alive again.

lambo640 said:
Big thank you.
worked very well.
my phone is alive again.
Click to expand...
Click to collapse
no issue... thats what xda is for....now its up to you to help someone else if its within ur knowledge and always hit thanks button... it makes ppl even more helpful cheers to you..ive been in ur shoes...it such a relief once its workin

yay my post was reffered too as well glad it worked, but also give stank0 credit too if it wasnt for him i wouldnt of had fixed it

MasterSe7en said:
yay my post was reffered too as well glad it worked, but also give stank0 credit too if it wasnt for him i wouldnt of had fixed it
Click to expand...
Click to collapse
i have a question for you...i have g3 and i can upgrade, dowgrade whenever i please with kdz witout a hitch or hint of bricking it or getting qhusb bulk 9008?? is it that much more complicated?? is this tougher to downgrade?? why do ppl brick? thanks.

Google~Android said:
i have a question for you...i have g3 and i can upgrade, dowgrade whenever i please with kdz witout a hitch or hint of bricking it or getting qhusb bulk 9008?? is it that much more complicated?? is this tougher to downgrade?? why do ppl brick? thanks.
Click to expand...
Click to collapse
ok ill explain the best i can for you.
Lets say for example that the bootloader was unlocked for the flex 2, if we downgraded with the current method that I did, then youll end up with a brick BECAUSE...after the 5.1.1 update, the bootloader was also updated, but if we had an unlocked bootloader, it would be no problem because then you can get right into fastboot since the bootloader is unlocked. however the reason my flex 2 bricked was because you cant downgrade bootloaders unless there is a specific way to do so, and if its unlocked...well since mine wasnt on the flex 2, when i flashed the TOT from ZV5 OVER a ZV6 bootloader, the rest of the partitions flashed, except for the bootloader end of it because it returned a "Version on phone is currently newer than the one being flashed" and declined the flash, since ZV5 wasnt build around the ZV6 bootloader, it doesnt know how or what to boot..
thats just a simple version, going into specifics is the Devs department, but in lamen terms, thats whats going on..if we had an unlocked bootloader it wouldnt be an issue because we could flash an older bootloader without the phone rejecting it. but once root is achieved on 5.1.1 then there will be a way to restore the FLex 2, the G3 you have although it may not have an unlocked bootloader, its been out for long enough to where exploits have been discovered, but if youre referring to upgrading and downgrading on Custom Roms, thats not the same thing, its only for official TOT's and KDZs or Official LG Firmware.
it would be like trying to flash a sprint variant with a tmobile rom....its just not built for it, its like having a Ford mustang with a V6 and trying to put a V8 motor in it without changing the computer/wire harness etc. it will fit...but it just wont work.
did that help for you to understand?

MasterSe7en said:
ok ill explain the best i can for you.
Lets say for example that the bootloader was unlocked for the flex 2, if we downgraded with the current method that I did, then youll end up with a brick BECAUSE...after the 5.1.1 update, the bootloader was also updated, but if we had an unlocked bootloader, it would be no problem because then you can get right into fastboot since the bootloader is unlocked. however the reason my flex 2 bricked was because you cant downgrade bootloaders unless there is a specific way to do so, and if its unlocked...well since mine wasnt on the flex 2, when i flashed the TOT from ZV5 OVER a ZV6 bootloader, the rest of the partitions flashed, except for the bootloader end of it because it returned a "Version on phone is currently newer than the one being flashed" and declined the flash, since ZV5 wasnt build around the ZV6 bootloader, it doesnt know how or what to boot..
thats just a simple version, going into specifics is the Devs department, but in lamen terms, thats whats going on..if we had an unlocked bootloader it wouldnt be an issue because we could flash an older bootloader without the phone rejecting it. but once root is achieved on 5.1.1 then there will be a way to restore the FLex 2, the G3 you have although it may not have an unlocked bootloader, its been out for long enough to where exploits have been discovered, but if youre referring to upgrading and downgrading on Custom Roms, thats not the same thing, its only for official TOT's and KDZs or Official LG Firmware.
it would be like trying to flash a sprint variant with a tmobile rom....its just not built for it, its like having a Ford mustang with a V6 and trying to put a V8 motor in it without changing the computer/wire harness etc. it will fit...but it just wont work.
did that help for you to understand?
Click to expand...
Click to collapse
Ya i understand that part... Ive dealt with bricked phones... Ive recovered all but one.... Why are some able to downgrade though... In another thread soomeones says hes gone back aand forth a couplw times... Thats why i was confused..

So there's no way to root the Sprint lg g flex 2 (ls996) once it's on 5.1.1? Because we can't downgrade right? Wish I knew this before I bought one off Swappa.
Sent from my 831C using Tapatalk

Toyeboy said:
So there's no way to root the Sprint lg g flex 2 (ls996) once it's on 5.1.1? Because we can't downgrade right? Wish I knew this before I bought one off Swappa.
Sent from my 831C using Tapatalk
Click to expand...
Click to collapse
Be patient it will come with time trust me
Google~Android said:
Ya i understand that part... Ive dealt with bricked phones... Ive recovered all but one.... Why are some able to downgrade though... In another thread soomeones says hes gone back aand forth a couplw times... Thats why i was confused..
Click to expand...
Click to collapse
Same here ga just takes time, someone will do it, maybe even me time will tell but I need to tape restore the laf partition somehow, so I need a dump from a zv6

MasterSe7en said:
Be patient it will come with time trust me
Click to expand...
Click to collapse
Yeah I don't regret buying the g flex 2 considering I got it for $260 on Swappa. Really happy I got top of the line hardware for this price. I'm sure root will come or maybe a way to unlock bootloader so we can downgrade.
Sent from my 831C using Tapatalk

MasterSe7en said:
Be patient it will come with time trust me
Same here ga just takes time, someone will do it, maybe even me time will tell but I need to tape restore the laf partition somehow, so I need a dump from a zv6
Click to expand...
Click to collapse
My flex 2 us995 was stuck at logo after alot of search i didnt find any thing but ls996 tot. So itried on it and after alot of tries i managed to get rid of this issue. Now i am using sprint ls996 5.0.1 over us995. I m gettting notification of 5.1 sprint update but after downloading the update i am unable to flash it. It fails in recovery. I manually downloaded update and tried to flash it but no success... Any solution to it.

muzammil457 said:
My flex 2 us995 was stuck at logo after alot of search i didnt find any thing but ls996 tot. So itried on it and after alot of tries i managed to get rid of this issue. Now i am using sprint ls996 5.0.1 over us995. I m gettting notification of 5.1 sprint update but after downloading the update i am unable to flash it. It fails in recovery. I manually downloaded update and tried to flash it but no success... Any solution to it.
Click to expand...
Click to collapse
are you rooted or completely stock?

MasterSe7en said:
are you rooted or completely stock?
Click to expand...
Click to collapse
I was rooted earliar via kingo root. Then i unroot it from supersu menu. I checked via root checker app it says no proper root found. May be this is the issue...do i need properly unrooted phone for 5.1 update??
How can i unroot it completly without flashing again...

join me on hangout +919999964499 because my g flex2 also got stuck in minios.
The process is a bit confusing so you need to contact me.
lambo640 said:
Hi it's the first time i post on XDA, i allways found what i need but this time...no solution.
i have an LG LS996 5.0.1 rooted after not possible to do an update.
i unroot the phone, factory reset, update....same resulte
i try to install the stock firmware. XDA Source tot file.....etc
the phone is stock on MINI OS screen for about 1 minute and reboot in the same screen.
i go to sprint, they don't want to replace the phone because the miniOS boot is not lg Bootloader and the unsurance wante me to pay 200$
to get a new one.
any help please.
Click to expand...
Click to collapse

shubhdixit2241 said:
The process is a bit confusing so you need to contact me.
Click to expand...
Click to collapse
could you give instructions? no button combo gets me out of it???
edit..i dnt have google hangouts...

[GUIDE] Installing and Rooting H950PR 5.1.1 from 5.0.1 10b

I caught the deal on ebay for an inexpensive Flex 2 not so long ago and, of course, the first thing I set out to do was update and root it.
The stock image ran 5.0.1, w/ firmware H950 v10b. I attempted an OTA update several days in a row, being told each time that none was available (the phone is AT&T branded and my service is through AT&T), but eventually grew impatient to get that sweet, sweet 5.1.1 action going.
After attempting to flash the 5.1.1 v11x rooted system image provided by randrew87 (here), I was greeted with a nifty little 'Security Error' boot screen and pursuant loop. Sadly, I wound up flashing the stock system dump I created following that tutorial to get back into a usable state.
Left with no other options (assuming, correctly, that I'm being impatient with OTA), I decided to try the 5.1.1 H950PR v15a firmware.
NOTE: Though I chose to flash the unrooted 5.1.1 H950PR image first, you may not have to complete this step; I'm not sure, but it's possible that you could simply write the rooted image instead.
First, I followed this wonderful tutorial by Sj12345: [KDZ] H950PR 5.1.1 compatible with ATT H950 with Video!!!
My initial plan was to write the unrooted system image and root using any of the available tutorials. Unfortunately, I couldn't get any of the tutorials to work for me as my device simply refused to allow r/w operations to /system while using the COM interface, regardless of my approach.
After a little trial and error, I discovered I could write the rooted H950PR-v15A image, provided here by Sj12345, and achieve root.
Here's how:
Download rootedsystem.img (from Sj12345's post)
Download LG Root Tools.zip (attached) and extract to a folder
Copy to the root of your internal sdcard via means of your choice (I used MTP mode and Explorer to drag and drop)
Power off your device
While holding VOLUME UP, insert a USB cable.
Open a Command Prompt window where you extracted the archive (easiest way is by holding Shift then right clicking within the folder > Open Command Prompt Here)
Double click ports.bat (included in the archive). Find the diagnostics port (in my case, COM4)
Type the following:
Code:
Send_Command.exe \\.\COM4
(replacing 4 w/ your com port)
You'll be greeted with a '#' prompt, terminal-style. From there, issue the following command (thanks to randrew87's thread):
Code:
dd if=/data/media/0/rootedsystem.img bs=8192 seek=53248 count=534528 of=/dev/block/mmcblk0
The operation will take a couple of minutes. Once complete, you'll again be greeted with the '#' prompt.
Type LEAVE (all capitals), and hit enter. Your phone will reboot and have a clean, rooted image installed.
Profit.
This guide is obviously very specific, requiring H950v10b 5.0.1 firmware on an AT&T flex 2, no OTA availability, and a myriad of other issues (such as /system being readonly). My hope is that this will aid others who don't fall exactly into the parameters described in existing tutorials.
Thanks again to randrew87 and Sj12345 for their great posts and work; this thread is merely a slightly different approach to their pre-existing methods. They did the work, not me!
Hope this helps someone!
Regards
Smith

Any reason to go with h950pr instead of Ota 5.1.1 or simply just out of frustration of waiting? I'm asking cause I should get my att flex 2 tomorrow.

bL33d said:
Any reason to go with h950pr instead of Ota 5.1.1 or simply just out of frustration of waiting? I'm asking cause I should get my att flex 2 tomorrow.
Click to expand...
Click to collapse
PR rom does not have all of the AT&T bloat. However, the main drawback that I'm aware of is that there is currently no way to go back to official AT&T. Seems everyone who has tried to do so has ended up with a bricked phone. You may also run into issues trying to get warranty honored once you move off the official AT&T version. So.. caveat emptor and all.
Most folks who really want the 5.1.1 OTA have managed to do so by laying down the minimum amount of cash for an AT&T gophone plan then getting on the horn with AT&T's tech support to have them manually push the update through.

Hi smithisize, thank you for your guide A very basic question, how do I know which version of root file to use? I just check in About Phone > Hardware Info and it said the phone was LG-H950.

Smithisize,
Thank you for the guide. I have a question.
My H950 has H950v10d 5.0.1 on it. I am just guessing that it would work for any 5.0.1 version.
Is this right?
Thanks again,
MB

Same here...
As Meatbag_1 written, I have the H95010d release witch rom we take???

Yes it will work for atnt g flex2 on atnt firmware 5.0.1 all subversions
Sent from my Lenovo P780 using Tapatalk

Isn't the latest software version for the US h950 the "v11x" version? Is it possible to flash that instead of the PR firmware?

No
Only OTA from AT&T
No flash
Sent from my LGLS996 using Tapatalk

I tried rooting my newly flashed 5.1.1pr with this method and got authentication error 11. I had to reflash to get out of the boot loop. What am i doing wrong?

Thanks man. How can i root it in the first place?
I was trying HERE but i do not know which to dowload, if H950 V11X or H950 V11Z ... can you help me with that?

H950v10d 5.0.1 not rooted. Tried method from OP using H950PR 5.1.1 rootedsystem.img. Now I am stuck at Security Error bootloop. Where to go from here?
Nevermind... Phone started non stop bootlooping with no way to shut it off. So, I smashed it to bits.

For Android 5.1.1 PR (Puerto Rico)
First Flash the KDZ file from here: http://forum.xda-developers.com/g-flex2/general/kdz-compatible-att-h950-t3180847 using LG Flash Tool. I use Build 03/07/2014 Offline with modded hosts file.
Then download the Rooted H950PR-v15A image file from the link provided and continue with the guide.
btw: thanks for adding; you type: "LEAVE" in caps. No other guide seemed to mention that and when I did, it was the only time it actually rebooted my phone..:good:

dustindavidson900 said:
H950v10d 5.0.1 not rooted. Tried method from OP using H950PR 5.1.1 rootedsystem.img. Now I am stuck at Security Error bootloop. Where to go from here?
Nevermind... Phone started non stop bootlooping with no way to shut it off. So, I smashed it to bits.
Click to expand...
Click to collapse
My Phone did that too but I caught it quickly between boots and got into download mode so I missed the satisfaction of smashing it..

twiice said:
My Phone did that too but I caught it quickly between boots and got into download mode so I missed the satisfaction of smashing it..
Click to expand...
Click to collapse
I was able to get to download mode, but it would just go into bootloop after entering download mode. I have another on the way, so hopefully things go better this time. Will try the method posted above.
Can you send me a link to download "LG Flash Tool Build 03/07/2014 Offline with modded hosts file?"
thanks

Your can download it from here:
http://forum.xda-developers.com/showthread.php?t=2797190
I ignore the warning about the kdz having to be in the flash tool directory. I just browse to the location I downloaded it to, never fails.
And about the hosts file, this version doesn't seem to need a modded hosts file as it won't try to connect. That was sth I had to do from an earlier version a long time ago and forgot.
Fyi: I soft-bricked my phone like many others having the same security error because of tring to install the rooted system image file for 5.1.1 over the top of 5.0.1. And to reboot from download mode I had to hold all three back-buttons.
To install Xposed framework follow this guide: http://forum.xda-developers.com/g4/themes-apps/guide-installing-xposed-locked-t3181593 but USE Flashfire 0.24 or earlier as the latest beta version won't flash sh*t on this phone (or the G4)
If you need detailed instructions let me know.
Good luck!
PS: I bought the AT&T version(5.0.1) for the 3GB of RAM but I live in Australia so couldn't get the 5.1.1 OTA which is why I had to do this way, but apparently if you flash the 5.1.1PR kdz over the 5.1.1 AT&T OTA update(just to avoid AT&T bloatware) it will brick your phone.

so i just purchased the the g flex 2 much like yourself and i have everything ready to go. My only concern before doing so is what to do after the soft brick. Once you reboot from download mode is, doesthe phone start normally? or is there an extra step since you talked about USE flashfire
PS. i dont care to root the phone or is it necessary for this all to work?

Updated H950 5.0.1 ATT to H950PR 5.1.1
had the lg drivers which i downloaded using the lg suite from the LG website ( i originally tried to update my phone using this method...didnt work obviously so i came here)
Used lg flash tool 2014 as provided from this forum.
Placed H950PR15a_00.kdz in the place where it asks in the tool
followed the guide, i had the phone in debugging mode and it was just on my homescreen unlocked, phone shut off restarted into download mode and started the firmware update, phone itself reset at 100% ( keep it plugged in)
Lg flash tool was still going at this point it was around 90%, phone was resetting when the lg flash tool hit 100% and then crashed ( had a panic attack really ) i kept the phone plugged in and it reset to the lg boot screen
Leaving it plugged in , in spanish i saw that it was optimizing my apps, went to the tutorial within the phone and it resarted again... so i started having another attack, i then saw the boot screen claro at this point i unplugged my phone and it is now on 5.1.1 h950PR i have not rooted the phone before hand it was stock from ATT.
Thought i put my experience in here with this phone in hope to ease some tension. it was easier than i thought even though the tool crashed at the end, phone had already accepted the KDZ at that point

twiice said:
For Android 5.1.1 PR (Puerto Rico)
First Flash the KDZ file from here: http://forum.xda-developers.com/g-flex2/general/kdz-compatible-att-h950-t3180847 using LG Flash Tool. I use Build 03/07/2014 Offline with modded hosts file.
Then download the Rooted H950PR-v15A image file from the link provided and continue with the guide.
btw: thanks for adding; you type: "LEAVE" in caps. No other guide seemed to mention that and when I did, it was the only time it actually rebooted my phone..:good:
Click to expand...
Click to collapse
Thanks mate. Ran into this problem when flashing the ATT version before flashing the PR version like I was going to. This solved it, thought I'd wrecked the phone for a sec.
Much appreciated

Tmobile pushed a 60mb update to my LG Stylo this morning? What to do?

Hello Folks
This morning I noticed, Tmobile pushed a 60mb update to my phone. I am rooted and unlocked but not on a custom rom.
Please advice what I need to do.
Thanks in advance
Regards

Is there any issuse with the update

I have not updated. As I mentioned I am rooted and unlocked. Not sure what to do hence posted my question in the forum.
I do not want to lock the bootloader. Just curious to see what others who might have got this update are doing about it.
Regards

Roism said:
I have not updated. As I mentioned I am rooted and unlocked. Not sure what to do hence posted my question in the forum.
I do not want to lock the bootloader. Just curious to see what others who might have got this update are doing about it.
Regards
Click to expand...
Click to collapse
1. You don't have to worry about lock bootloader
2. Which Software version are you running? v10e, v10i or v10j?
3. If you update there is a way to downgrade cuz we have previews KDZ's

I am running version 10i,
I am guessing tmobile wants to upgrade me to v10j. Is there a flash able version for 10j that I can use?
Thanks

Roism said:
I am running version 10i,
Thanks
Click to expand...
Click to collapse
Ok, you can go here and update to the latest version v10j using @GameTheory. V10j Full update/pre-rooted/untouch TWRP.
http://androidforums.com/threads/me...-v10j-rom-flashable-updated-9-26-2015.926221/

Thanks Draken,
Issue resolved
Regards

getting "error" when trying to install 60mb OTA update?
I was rooted on 5.1.1 (t-mobile version) but I unrooted via SuperSU app ( at least I think it unrooted)
and now each time I try to update I get the "error" and have to pull the battery out
before I unrooted I tried to "flash" 10vj Update but I do not know how to flash and it failed
this is my first time rooting any device and I was also unsuccessful at trying to download twrp
as a noob I am apologetic that I do not know such things
but I need help and really don't want to miss out on the marshmallow update
when it comes out in a couple months someone help????how do i fix this i will
need the easiest solution explained in great detail if possible
I really love this phone!!!
:crying:

lovejunkie777 said:
I was rooted on 5.1.1 (t-mobile version) but I unrooted via SuperSU app ( at least I think it unrooted)
and now each time I try to update I get the "error" and have to pull the battery out
before I unrooted I tried to "flash" 10vj Update but I do not know how to flash and it failed
this is my first time rooting any device and I was also unsuccessful at trying to download twrp
as a noob I am apologetic that I do not know such things
but I need help and really don't want to miss out on the marshmallow update
when it comes out in a couple months someone help????how do i fix this i will
need the easiest solution explained in great detail if possible
I really love this phone!!!
:crying:
Click to expand...
Click to collapse
dummy you can't update that way you must remove all traces of root which the app can't do use the KDZ

If you are rooted and it says system update DO NOT INSTALL IT... it will brick your phone
Sent from my SM-G530T using Tapatalk

H950 5.1.1 V11z Bricked/Bootloop: LG Security Error, Authentication Fail #9

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