yashsingh1/xdaforums huggingface dataset:
[LG Optimus 4X HD] muellersmattes:
If you're looking for Samsung Nexus, why are you writing here? This is no Nexus device. Apart from that, all nexus devices have unlockable bootloaders which are very easy to unlock because they are not encrypted.

What we have here is a Tegra 3 encrypted bootloader, and that's a whole different story. You need the secure boot key from LG to unlock it. LG won't provide it, so we won't get it.

"Searching" won't help anyone.
[LG Optimus 4X HD] ozeer:
Hi Guys,

Why we don't look for HTC One X unlock bootloader , both 4x and One X have tegra3 processor and also similar specification between each other.

Even if we don't unlock the boot-loader,that apps will help us for some progresses :)
[LG Optimus 4X HD] muellersmattes:
It's no help because to unlock the OneX you'll need a boot key from HTC. To obtain it you have to boot your device in fastboot mode. Here's the first difference, our 4X doesn't have fastboot enabled. Perhaps one could do it with NVFlash, but you'll still need the SBK. And that SBK is different for all Tegra models, and we don't have ours.
[LG Optimus 4X HD] babymatteo:
+1. Correct. But then NVFlash tool will not be enough to unlock the bootloader.
[LG Optimus 4X HD] andrewl121:
IS11LG_SystemBackupTest.signed Does not run. It was installed properly, but I got an Unexpectedly Stopped error as I ran it. My phone is the Canadian verison P880G, could that be the problem?
[LG Optimus 4X HD] RuedasLocas:
You've done everything like you should?

Better is to install the app, restart your phone, oprn the app, it will happear on the screen "hello world", let it stay like that.

Run the "cmd" for the ROOT but don't execute, now while you have that screen on the phone, press the power button and choose reboot, when the phone turns off to rebbot, hit the "enter" to execute the ROOT cmd and right after connect the cable to the phone.

Let the phone reboot the times it needs.

Should work like that...
[LG Optimus 4X HD] justfortest:
I too, have a P880G.

I could not root it with this method.

IS11LG_SystemBackupTest.signed does install but "Unexpectedly stopped upon launch.

My firmware is v10c.

Anyone has thought ?

:)

Thanks in advance
[LG Optimus 4X HD] RuedasLocas:
I already gave my opinion here http://xdaforums.com/showthread.php?t=1954355

Hope it helps...
[LG Optimus 4X HD] justfortest:
Root issue P880G

Thanks, I will continue on my adventure on that the other thread :)
[LG Optimus 4X HD] justfortest:
Just want to share with everyone that this method worked for me

http://xdaforums.com/showthread.php?p=33410180#post33410180
[LG Optimus 4X HD] :
Works on my stock 10f, many thanks.
[LG Optimus 4X HD] srcsntrk:
hi all,

How can I cancel root?

Thanks in advance,

BR
[LG Optimus 4X HD] RuedasLocas:
Just open SuperSU/ Settings and choose "remove root completly" (something like that, mine is in portuguese...).
[LG Optimus 4X HD] srcsntrk:
thanks man :) no need to root when there is no cm 10 :)
[LG Optimus 4X HD] RuedasLocas:
As you wish.

Root is not only to flash other ROMs, also to allow you to install some apps and with them freeze or uninstall some stock apps that sometimes help draining the battery.

It won't "hurt" you and, you never know when you'll need it ;)
[LG Optimus 4X HD] rtunner:
Thank U very much. The method is easier than ABC and works like a charm.
[LG Optimus 4X HD] srcsntrk:
Dear All,

Is there anybody who thinks his device has been becoming laggy then the first day usage.

It feelds laggy sometime when I use the 4x HD. But when I first use it (I mean first 1 mounth maybe) It was super fast.

What do you think about it? Same happens to you?

BR,
[LG Optimus 4X HD] Arne_B:
Thanks for this root method. When the phone was slow after the reboot, it was really very slow :eek: I even couldn't do anything, touch wasn't responsive...

But just started the CMD script and root was ok! Phone is at normal speed again now :D

Fyi, the root was successful without any errors on V10F.
[LG Optimus 4X HD] notarius:
thanks a lot my friends thanks you enjoy many things to be well
[LG Optimus 4X HD] adverserath:
new app?

--
[LG Optimus 4X HD] khalark:
LG Motion now rooted

thank you
[LG Optimus 4X HD] SimonTS:
Rather than pointlessly quoting the OP - never do that unless there is a particular benefit to doing so - why don't you just learn what the 'THANKS' button is for and press it? There is no need to create a new post in a thread just to say 'Thank You' :rolleyes:
[LG Optimus 4X HD] AG22:
Guys, i have a question. When i try to open the apk that i have installed, is says "An error ocurred, the app will be closed" or "an unexpected error has ocurred", something like that, and i can just click "Ok". Is it normal ?

I tryed the other method running the "RunMe.bat", but in the end, just "Running"... I dont know what to do. I have to delete some apps
[LG Optimus 4X HD] RuedasLocas:
In the first method try to re-install the app "IS11LG_SystemBackupTest.signed.apk", restart the phone, open the app, while you have the screen "Hello world" restart the phone, run the ROOT CMD and connect the phone.

After is better to perform a factory reset, if you don't want to loose files or apps just unisntall the "IS11LG_SystemBackupTest.signed.apk" but, you might have some lag and battery drain...
[LG Optimus 4X HD] AG22:
I tryed to re-install the app.. But it does't work. When i open, the error appears, and i just can click in "Ok" to close de app. I dont know what to do, i need the root to remove some apps and get a better battery life.
[LG Optimus 4X HD] RuedasLocas:
You have done something before try to root, that file works great when the SW is stock...

Last resource, downgrade to earlier version, factory reset, upgrade to the latest (it can be V10f/g or other depending on your country or your will...),

Install the app to root the phone, open it, while it's open with the screen "Hello world" press "Power button" and restart, run the ROOT cmd, wait for the 2/3 reboots, after rooted, factory reset again and its ready.

You can try the second method but, if that one didn't worked the second hardly will.

I saw that the second method now goes on v16...

Try the v15 if that one doesn't works for you.

Download it here:

http://www.4shared.com/zip/Q5BIhhlg/Root_with_Restore_by_Bin4ry_v1.html
[LG Optimus 4X HD] AG22:
I havent dont anything before rooting.

I will try here the v15, thanks. If doesnt work, i will be very sad, cause i do need remove those apps...

EDIT: v15 does not work.

EDIT: can i flash v10F, factory reset, root, and then go back to 10C ? Will i lose the root ?
[LG Optimus 4X HD] profyler:
do i loose root, if i update my phone using KDZ updater?
[LG Optimus 4X HD] RuedasLocas:
Most part of the times root remains but, last time I flash, from V10F to V10G, root vanish... but I keept all apps and data.

I just had to root again, SuperSU didn't change version, remained in Pro version, just had to update on the PlayStore.

Some apps that remained stop work, I need to go to the app folder and re-install them.

Nothing complicated, even the GPS remained, only need to paste again the gps.conf again to "etc" folder.
[LG Optimus 4X HD] profyler:
ok, im having the same problem as AG22

same error message when trying to open Systembackuptest.

can we skip : Open the "SystemBackupTest" app you just installed. ???

this is just wierd, must be something with the brazilain firmware, but its anyway very wierd.

(instaled 10c, factory reset, tried to root)

Edit; will try this method as it seems that the guy had the same error but did suceed in rooting aplying this method http://xdaforums.com/showthread.php?p=33410180#post33410180
[LG Optimus 4X HD] profyler:
Edit; will try this method as it seems that the guy had the same error but did suceed in rooting aplying this method http://xdaforums.com/showthread.php?p=33410180#post33410180[/QUOTE]

no luck with the other method either, keep getting the "mount: permission denied (are you root?)" error.

phone doesnt reboot after clicking in restore, as it should do i guess.:confused:

EDIT: got root (finally) after downgrading to 10a, will uninstall apps and upgrade to 10c, hope i wont loose root

EDIT2: lost root after upgrading to 10c, none of the rooting method works on brazilain formware from except 10a. thats sad. will wait for brazilian 10f to come and try again
[LG Optimus 4X HD] AG22:
It is so sad, bro. What about the V10b, is it better than V10a ?

Other question: does exist any way to keep the root after upgrading 10A to 10C ? We need a solution to use our 10C =(
[LG Optimus 4X HD] profyler:
i dont think so. may be updating to 10f , root, and then back to 10c. but i didnt and wont try it. tired of that, will wait for other solution to come.

have you tryied this mthod with 10c? http://xdaforums.com/showthread.php?p=33410180#post33410180

may be your get luckyer than me...
[LG Optimus 4X HD] AG22:
I have already tryed, bro... It didn't work. I dont know if i use 10a or 10b Brazil. What is the better ?
[LG Optimus 4X HD] profyler:
obviously 10B, latest are always better... b , c , f...
[LG Optimus 4X HD] AG22:
I guess i will try the 10B later.
[LG Optimus 4X HD] Feregorn:
Can we use this method to root a european device on the new firmwares? I'm a prospective buyer of the LG Optimus 4X HD and I would like to have the possibility of rooting. If somebody can provide an aswer, I will be thankful!
[LG Optimus 4X HD] RuedasLocas:
I'm in europe, you can root your phone :good:
[LG Optimus 4X HD] Feregorn:
Thanks mate for the answer.
[LG Optimus 4X HD] iamaniff:
Rm failed for data.... This is normal?
[LG Optimus 4X HD] RuedasLocas:
Your phone is set to "charge only"?

Debug mode is ON?

Did you reset the phone while "IS11LG_SystemBackupTest.signed" is open with the screen "Hello world"?
[LG Optimus 4X HD] camarohtcpro:
Thanks worked perfect, thanks again!!!! Couldn't get dos prompt though just went into folder and ran root. It executed and ran fine on windows 8!!!!!
[LG Optimus 4X HD] Feregorn:
Yeah, that line appeared to me also, when I run the script but everything went fine. Just to make sure, I ran an app afterwards that required root privileges to work and it functioned properly. As of now, I have rooted my LG Optimus 4X HD, too!:D
[LG Optimus 4X HD] delta_ray:
help :(

HI all,

I tried to root my LG P880 but I am stuck with the Windows driver. I can't get it to work, driver shows still error code 28. I can't cancel the whole thing, my phone remains slow as hell. I uninstalled SystemBackuptest already, rebootet multiple times. Still my phone is still slow as hell, screenupdates are only done half. No Screen Filter app installed.

I need help, how can I revert back from this slow mode?

--

Edit: Don't ask me how, but somehow I got the drivers finally working using another USB Port. I could fully root my phone and it is working normally again :D
[LG Optimus 4X HD] Feregorn:
Yeah mate, sometimes these things happen. Computers and buggy creatures...:cyclops:
[LG Optimus 4X HD] hubatt:
Phone freezes - NEED HELP!

Hi guys,

after instaling IS11LG_SystemBackupTest.signed.apk and rebooting my 4X freezes at the lock screen and the script freezes at '* daemon started successfully *'

:crying: :crying: :crying:

I need your help!

I did forget to activate USB debug mode

---------- Post added at 09:57 AM ---------- Previous post was at 09:10 AM ----------

Could activate the USB-Debugging finaly. Until that everything was extremly slow - my fault!! :silly: :eek:

Now everything's fine and many thanks to all of you!
[LG Optimus 4X HD] MrGioba:
And now what should I do??
[LG Optimus 4X HD] Feregorn:
Follow the rest of the guide! Its that simple. When you reboot normally again, look in the app drawer for the app SuperSu to really see if the rooting was succesful - I'm guessing it was:D . Don't open it now! Go firstly to the Play Store and update it and then open it! Afterwards, you now what to do with a rooted android device....:victory:
[LG Optimus 4X HD] RuedasLocas:
In that situation? Wait... :p after reboot do the factory reset please ;)

SuperSU can be opened and updated later, no problemo :)
[LG Optimus 4X HD] Feregorn:
I always follow instructions to the last letter...!!! To avoid problems :fingers-crossed:
[LG Optimus 4X HD] psolord:
Hello community.

I rooted my phone using the method of the OP, but I did not do a factory reset after that.

I am now in a state of mind where I believe my power consumption is higher than it should be, but I could be wrong.

Still, in order to shake off that thought, I removed the root by running SU and selected unroot, rebooted and then reset my phone to factory defaults. Will this do the trick?

Is there a more thorough way to do a complete factory reset?

Thanks.
[LG Optimus 4X HD] Feregorn:
From Android Recovery boot menu.
[LG Optimus 4X HD] muellersmattes:
I wonder why you removed the just obtained root as that should not affect the battery. I'd root again, and do a factory reset from the recovery directly afterwards. Then freeze some of the LG apps, they tend to eat the battery a lot.
[LG Optimus 4X HD] dereknas:
Could this method be used to root LG Optimus LTE2 phone running Jellybean 4.1.2?
[LG Optimus 4X HD] chiquitico:
Cant Root

I have the problem with SystemBackupTest, it doesnt run just stops

is for the soft version? i'v already made soft reset, etc etc etc

the attach have a picture of my system
[LG Optimus 4X HD] rts91:
Hey all i just got the 04XHD out of the box and im attempting to root it.

When i open the SystemBackupTest file on my phone it says note: the application systembackuptest(process.com.example.systembackuptest) has stopped unexpectedly.please try again

android version: 4.0.3

build number: IML74K

software version: LG-P880g-V10c - SEP - 20 - 2012

whats wrong? thanks

btw i got this phone from WIND mobile in Canada
[LG Optimus 4X HD] chiquitico:
The same problem

I hacer The same problema but nobody says nothing is so strange
[LG Optimus 4X HD] SimonTS:
@chiquitico - is your phone also the Canadian model? It seems to me that people with that model have problems, maybe because it is different hardware and software?

For anyone else the root method should work, and when it doesn't it's normally because they are failing to follow the instructions correctly from what I can tell.
[LG Optimus 4X HD] chiquitico:
Problem Rooting

Well my phone says Made in Korea, but nothing the program cant run, always stops
[LG Optimus 4X HD] danniehayabusa:
hi everyone, im new here i came from the sony ericsson xperia x10 forum.

this is a bittersweet surprise for me, after being flashin flashing and flashing custom roms, kernels, tweaks in my x10 there is no develpment for our 4xhd =( this is sad

anyway, i couldn't root my 4xhd using the method of the op, i have the same problem like other partners here, the app system backup test didn't work, i followed the steps carefully, and when i try to open it, appears an error and stops, i ignore it, followed the steps and the cmd commands fail, i think is due the app that didn't work

i am running the v10a from telcel (méxico) did anyone find a solution? thanks
[LG Optimus 4X HD] RuedasLocas:
Untill now I only found one unrootable version, Brazilian V10C... but maybe some others have the same issue.

Just don't forget...

GUIDE

Download, Unzip and Install the LG USB Driver.

Download and extract the Root kit (o4xr.zip) to "C:\o4xr"

Download and copy "IS11LG_SystemBackupTest.signed.apk" to your phone

On your phone, go to "Settings -> Security" and make sure "Unknown Sources" is TICKED

Go to "Settings -> Developer options" and make sure "USB debugging" is TICKED

Install "IS11LG_SystemBackupTest.signed.apk"

Open the "SystemBackupTest" app you just installed.

Hold the power button and choose "Power off and restart". While the app "SystemBackupTest" is open with "Hello World" on the screen!!!

When you can see the lock screen, you may notice that the phone is running very slowly, this is normal.

Connect your phone via USB to your computer.

Make sure the phone is in "Charging Only" mode.

Open a command prompt (may need admin privelages, right click, run as administrator)

Type without quotes "cd C:\o4xr" and press enter.

Type without quotes "root" and press enter.

Wait while the script runs, and the phone will reboot automatically.

You should then see the command prompt "C:\o4xr>".

Uninstall the "SystemBackupTest" app on your phone. (Do NOT re-open it, or you will need to run the script again).

On your phone, open up Google Play Store and search for "SuperSU".

Update SuperSU then open it.

Press OK to update the SU binary.

You now have root and can safely restore the "Unknown Sources" and "USB debugging" settings back to how you had them!

All LG drivers should be installed.

Be sure that Windows recognized your device.
[LG Optimus 4X HD] danniehayabusa:
Hi pal, first thanks for the answer, and yes, i did followed all the steps carefully, i read some of us with the 10a firmware were able to root, i couldnt. Maybe changing the firmware to 10c works, the question is, how to do it? This device is a beast, is a chame that lg does not provide us the tools to ulbl. I think ill wait until someone has a better way to root :(
[LG Optimus 4X HD] Subhajitdas298:
try this, may work

1. Give ota update, turn to latest as possible

2. Do hard reset (do backup everything to external sd first)

3. Remove sd card

4. Now start following instructions for root (turn usb debuging and charge only before installing systembackuptest apk)

Tips: Opening that apk should be saying hello world

If cmd dosen't even coping that o4xr folder, just do everything else instructed and for cmd part, you don't need that. Just go to that folder when it is in c drive and open "root" batch file and wait. Don't click anything else there.

Most of all read original instruction first carefully and note this two instructions or open in pc while working.

For latest supersu pm me.
[LG Optimus 4X HD] RuedasLocas:
You can try also this:

http://xdaforums.com/showthread.php?t=1886460

Hope it works...
[LG Optimus 4X HD] WeeJockMacFeegle:
Works on v10h.
[LG Optimus 4X HD] SKSAustin:
Hi!

I have one big problem.

I rootet my x4 under Firmware v10f and all work fine.

Then i updatet to Firmware v10h, and want to root the x4 again.

I do all the steps like befor, but it do not work.

I think the problem is at the point where i have to start the App "SystemBackupTest".

Afer i start it, i reboot the handy, but after restart the slow down dont exists. The x4 works like bevor, and nothing is slow downed.

I have deinstalled the app, have start a new instal, bt nothing helps.

What is wrong here?

I´m from germany if this is mandatory.

Thanx.

SKSAustin
[LG Optimus 4X HD] MyS2isDead:
worked for me in v10h too, the first time i tried i forgot to tick usb debugging and my phone was so slow i couldn't even go to system settings, i had to do a hard reset and re flashing the firmware.. so.. be careful with that
[LG Optimus 4X HD] RuedasLocas:
You loose root? Cause most part of the time root remains... unless you upgrade via WEB.

Sure that you don't have supersu in the app screen?
[LG Optimus 4X HD] SKSAustin:
Yes i loose it.

I have the supersu app (because i have make no factory reset after updating) but they app say i have no read. eather Titanium Backup say i have no root. :(
[LG Optimus 4X HD] RuedasLocas:
You can try this:

After factory reset, repeat the process...

GUIDE

Download, Unzip and Install the LG USB Driver.

Download and extract the Root kit (o4xr.zip) to "C:\o4xr"

Download and copy "IS11LG_SystemBackupTest.signed.apk" to your phone

On your phone, go to "Settings -> Security" and make sure "Unknown Sources" is TICKED

Go to "Settings -> Developer options" and make sure "USB debugging" is TICKED

Install "IS11LG_SystemBackupTest.signed.apk" REBOOT

Open the "SystemBackupTest" app you just installed.

WHILE THE APP SCREEN SHOWS "HELLO WORLD", Hold the power button and choose "Power off and restart".

When you can see the lock screen, you may notice that the phone is running very slowly, this is normal.

Connect your phone via USB to your computer.

Make sure the phone is in "Charging Only" mode.

Open a command prompt (may need admin privelages, right click, run as administrator)

Type without quotes "cd C:\o4xr" and press enter.

Type without quotes "root" and press enter.

Wait while the script runs, and the phone will reboot automatically 2/3/4 TIMES.

You should then see the command prompt "C:\o4xr>".

Uninstall the "SystemBackupTest" app on your phone. (Do NOT re-open it, or you will need to run the script again).

On your phone, open up Google Play Store and search for "SuperSU".

Update SuperSU then open it.(I Prefer to open the supersu, update binary and after update supersu.apk in GooglePlay...)

Press OK to update the SU binary.

You now have root and can safely restore the "Unknown Sources" and "USB debugging" settings back to how you had them!

Factory Reset!!!
[LG Optimus 4X HD] Norax:
V10h since bought and it works just perfect.

Thank you very much! :good:
[LG Optimus 4X HD] Omario-242:
Did the update to V10H with the LG Mobile Device Tool today (took about an hour)

and I lost root? Don't know if this is unusual, but well,

I then proceeded to root it again with this guide

and there are no problems :)

Full root access (even settings of SuperSu etc. are restored).

And I'm from Germany (for those who think that in Germany the V10H

got root problems as mentioned above).

So thanks for this guide :)
[LG Optimus 4X HD] RuedasLocas:
"LG Mobile Device Tool" is the best methode to upgrade because its the cleanest and thats why you loose root :)

But the fact of being German is not an issue, unbranded phones have the euro_open.

The only version that I know, with root issues, is the brazilian v10c.
[LG Optimus 4X HD] psolord:
I received the 10h OTA yesterday. Root did not affect the update whatsoever and the phone also remained rooted after the update. Great stuff!
[LG Optimus 4X HD] igorstoja83:
http://xdaforums.com/attachment.php?attachmentid=1275925&d=1345655783

this is my problem and i turn only charge mode and problem is still here.Stuck on this window why?
[LG Optimus 4X HD] RuedasLocas:
Pay attention to fields in red
[LG Optimus 4X HD] SturmGhost:
I stuck here:

Debugging is ticked and charging only too.

I can't deinstall this app, because my phone is ultra slow and wont open the app drawer... :(

E: Worked now...
[LG Optimus 4X HD] spectralblue:
SystemBackup

System Backup Test apk always crashes on my phone.

Tried the root method on the following page and it worked:

http://xdaforums.com/showthread.php?t=1886460&nocache=1
[LG Optimus 4X HD] moss20:
sorry guys but it seems that this method doesn't work 100% on our phone..

Or it does ?
[LG Optimus 4X HD] Zhus06:
Worked like a charm on my new bought phone with V10h. I did everything like described on 1st post and everything worked like it should.

Only "error" was that it couldn't rm (delete) something which is probably because the script is multi-phone one? So our phone doesn't have that specific file, but still SU is there and phone runs great, now I need to RM LG craps from it myself.

gj guys I hope we will have some custom ROMs soon too and lots of forum posts like we had in HTC desire section :P
[LG Optimus 4X HD] Luhccas-X10:
I'm on V10C brazilian firmware and this don't work :(

Any help?

Ps.: The SystemBackupTest force close always...
[LG Optimus 4X HD] RuedasLocas:
Brazilian V10C is unrootable... sorry :(
[LG Optimus 4X HD] muellersmattes:
No P880G Canadia, no Brazilian firmware. That's all. Should work on every other version without problems.
[LG Optimus 4X HD] Luhccas-X10:
oh well... Here i go again to the weird Portugal's portuguese :(

Btw,thank you for the answer.

P.s.: Any chance to port brazilian portuguese to open euro firmware?

Enviado de meu LG-P880 usando o Tapatalk 2
[LG Optimus 4X HD] perked:
Anyone know if this root method works for the developer version of the 4X HD?
[LG Optimus 4X HD] RuedasLocas:
Nope... at least that I know :o

It should... but if you're running V09x FW, might be another story...