Database Develop

[Q] Problem Rooting LG Optimus 2x

Hi all,
So I've tried lots of forums on here about how to root my LG Optimus 2x but keep running into the same problem. Here are the steps I've been following:
Remove the battery.
Plug in your USB cable to your PC.
Hold Volume Up and Volume Down at the same time keeping them held down.
Plug in the USB cable to your phone. (Keep the buttons held until Windows detects a new APX device.)
Open Device Manager in Windows and you should see "APX Device" listed with an error icon.
Right click on the APX device.
Select 'Update driver software'.
Select 'Browse my computer...'.
Select 'Let me pick...'.
Select 'Have disk'.
Browse to directory you extracted the *driver* software to: One-Click-G2x-recovery-flasher-09-23\APX.
Accept any warnings, including the big red alert (you may need to disable UAC).
Now in Device Manager under 'USB Controllers' you should have an 'NVIDIA USB Boot-recovery driver for mobile devices'.
If not, uninstall the driver, reboot, rinse and repeat.
I'm on a Windows 7 32 bit PC. When I check for an APX device in the Device manager I don't see one?
I do see an unknown device but when I try to click have disk etc for this, it does not recognise the drivers I'm pointing at and does not install. Can anyone help me with this?
Many thanks,
Derek

What version are you on? Froyo or Gingerbread? It seems you are flashing CWM but that's a longer way to root. You could always try Super one click, which works on froyo.

Yes, I am on 2.2. So Superoneclick is safe to use?

Absolutely. I used it when I was on froyo. Do you have any sensitive data however on your phone? Just in case you mess up, it's always good to have a backup of it. Probably hook up your USB cable to your pc/laptop and copy/paste the files to be safe.

Ok, thanks. So I have rooted the phone using SuperOneClick. Can you send me a link where I can find information about how to put on Gingerbread 2.3 now? Or maybe there is a better ROM I can use that that? Any advice would be appreicated.
Thanks,
Derek

You can try Cyanogen Mod, but that is experimental, even the RC one (Release Candidate).
You can try other leaked versions of ROMs, or you can download the latest v10L Gingerbread release. Before installing any ROM, I recommend doing a CWM or Nandroid backup.
The link to download gingerbread (it's only out in a few countries in Europe) is located in the development sub section of the LG 2x forums. However, try using the update tool and see if it tells you that you have an update.

I seem to have a bit of a problem. I took your advice and found a forum that helped me to do a Nandroid Backup. As part of the steps it asked me to install ROM manager from the Market. I started this and chose my phone model. I started the Flash ClockworkMod Recovery’ in the ROM manager but it stopped and said a permissions error occured. Then I tried to open other programs but they wouldn't open. I tried to reboot the phone but now it just flashes on the LG logo and won't boot up. Please help me with this.

Hello people on this great forum i am new here so i salud you all.
i installed Cyanogenmod 2.3.4 android on lg optimus 2x butt here is the thing how do you update to a newer version or do you have to unstall everything and start from scratch.any tips are welcome and is there a new version of cyanogenmod

derbeast said:
Hi all,
So I've tried lots of forums on here about how to root my LG Optimus 2x but keep running into the same problem. Here are the steps I've been following:
Remove the battery.
Plug in your USB cable to your PC.
Hold Volume Up and Volume Down at the same time keeping them held down.
Plug in the USB cable to your phone. (Keep the buttons held until Windows detects a new APX device.)
Open Device Manager in Windows and you should see "APX Device" listed with an error icon.
Right click on the APX device.
Select 'Update driver software'.
Select 'Browse my computer...'.
Select 'Let me pick...'.
Select 'Have disk'.
Browse to directory you extracted the *driver* software to: One-Click-G2x-recovery-flasher-09-23\APX.
Accept any warnings, including the big red alert (you may need to disable UAC).
Now in Device Manager under 'USB Controllers' you should have an 'NVIDIA USB Boot-recovery driver for mobile devices'.
If not, uninstall the driver, reboot, rinse and repeat.
I'm on a Windows 7 32 bit PC. When I check for an APX device in the Device manager I don't see one?
I do see an unknown device but when I try to click have disk etc for this, it does not recognise the drivers I'm pointing at and does not install. Can anyone help me with this?
Many thanks,
Derek
Click to expand...
Click to collapse
Only select the DEBUG USB, and its ok!
Settings > Applications.
I hope this help, because you can only do the root with the DEBUG USB activate

Rollback Optimus 4X HD from 4.1.2 JellyBean to 4.0.3 Stock ICS

Rollback Optimus 4X HD from 4.1.2 JellyBean to 4.0.3 Stock ICS in this case V10H
Videotutorial: http://www.youtube.com/watch?v=NDyZ8pH2jp0
1st: U need are the files that you get here: LG FlashTool and Accessories
2nd: Install the LGUnitedMobileDriver (first LGUnitedMobileDriver_S4981CAN36AP22_ML_WHQL_Ver_3[1].6 & 2nd LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3[1].6)
3: Turn Off your Mobile and remove your SD and Sim-Card
4: Press volumen down and put in your USB-Cable
5: When your computer detect, it installs the driver
6: After Driver installation, go to device manager select “LGE CDMA USB SERIAL PORT” right click properties then connection setting advanced and set to “com41″
7: After that run LG FlashTool
8: Select in DLL the x3_2008_v0.0.6.9.dll
9: In S/W select only the LGP880.dz file that i´ve added in dz and dll file folder
10: In Action Mode select Upgrade DL
11: in Connection Mode select USB
12: Click on OK
13: Click on Port COM settings (COM plug icon) and select 1 ( Unmark the numbers above )
14: Click start(The Port 1 window should appear READY)
15: Disconnects USB cable and wait 5 seconds
16: Press and hold voll down button in Lg P880 and connect USB cable
17: The update process will begin automatically after that release the Vol down
18: When the progress reaches 100%, the mobile will power on and boots automatically into ICS!
19: Congratulation you did it
20: Now u can Flash v20a again
hopfully that helps to rollback for those they want.
a thanks would be great
dont forget to thanks xavierleonelbr from his guide i´ve get some parts
Some other DZ-Files to flash with LG-Flashtool:
LGP880AT-00-V10a-EUR-XXX-MAY-23-2012
LGP880AT-00-V10b-262-000-Jun-11-2012
LGP880AT-00-V10d-EUR-XXX-JUL-16-2012
LGP880AT-00-V20a-EUR-XXX-MAR-04-2013
LGP880AT-00-V20a-BUM-XXX-MAR-05-2013 CN
LGP880AT-00-V20a-262-000-MAR-26-2013 ADEUBK
Warning and notes:
Do not forget backup your apps, pictures, contacts etc. Flash with LGFlashTool will erase all data on the phone!
Disable Windows Enabler when its running from a season before with the KDZ-Update-tool! It wouldnt work!
Be sure you have the propper driver instaled and chosed the right options in the comport settings!

I think this thread would fit better to general sectio doesnt it ?

tobixdev said:
I think this thread would fit better to general sectio doesnt it ?
Click to expand...
Click to collapse
I thinking it´s for troubleshooting. If it is better to move at general section...maybe a mod can move it ...

SnXo said:
Rollback Optimus 4X HD from 4.1.2 JellyBean to 4.0.3 Stock ICS in this case V10H
16: Press and hold voll down button in Lg P880 and connect USB cable
17: The update process will begin automatically after that release the Vol Up
Click to expand...
Click to collapse
so hold vol down or vol up ?
so change
in point 17 you have after release VOL UP
should be vol down

Sorry for this dummy mistake...Vol down when u plugin the USB cable...i`ve editet...thx for telling me :thumbsup:
Sent from my LG-P880 using XDA Premium HD app

Thanks, works perfect!
Now i can play with my good old v10h

Easyest way...
To go back to previous firmware (ICS V10x_00) with LGFlash Tool there is no need to invent in device properties
or others...
The same methode can be used to do a clean install of the V20A, or other...
Internal memory will be wiped !!!
Be sure that you have the latest drivers installed:
http://www.4shared.com/file/rPpP2btT/LGUnitedMobileDriver_S4981MAN3.html
http://www.4shared.com/file/ZSMf2x6n/LGUSBModemDriver_Eng_WHQL_Ver_.html
kdz-update: (updated 08-09-2015)
http://www.4shared.com/rar/mo5bLPRcce/kdz-udpate.htmll
install "msxml" (its inside the "kdz-update" folder).
run windows enabler and turn it ON
With battery on the phone and the phone off, press "VOL-" and connect the phone
to the computer while pressing, you'll be in S/W. (If you have issues due the device
being recognized while in S/W Mode, disconnect from PC, take out the battery and
put it back again on the phone, try again "Vol- & connect to PC", wait a few seconds
for Windows to recognize the device).
Run "LGFlashTool" (its inside the "kdz-upload" folder).
select the .dz and the .dll
Official euro_open V20A_00 .dz and .dll:
LGP880AT-00-V20a-262-000-MAR-26-2013+0
http://www.4shared.com/rar/i5muvxCb/LGP880AT-00-V20a-262-000-MAR-2.html
Official euro_open V10H_00 .dz and .dll:
http://www.4shared.com/rar/LruGBo2Z/V10H_00_dzdll.html
View attachment 1784755
Go to "port settings" and select all 16 ports.
View attachment 1784756
Start the upgrade clicking in the yellow arrow on the top/left of the program window.
Three (3) ports will look like comunicating (in the next image you'll see only two cause I'm not really flashing), but
only one is the right one. Two of them will stay stucked in x% and a third port will go higher. Memorize the one that goes higher cause is that one.
In my case, this time was the nr. 3.
View attachment 1784757
Close the program and re-start it. This time, go to "port settings" and select only the port that you memorized,
start the upgrade and you just need to wait for the phone to reboot.
In case of that port fails, choose one of the other two untill you hit the good one.
If you don't see 3 ports, its something wrong and probably this won't work...
Easy
To set manually the port to "1", connect the phone in S/W Mode, open windows "Device Manager",
select “LGE CDMA USB Serial Port”, right click in "properties", connection settings advanced and set it to “com41″
Video added:
(select full screen and 1080p for better resolution)
Report if something doesn't work
This post was edited cause I realise that is not always the first port the right one, sorry...

Good news, may be possible to do "root transiency"

skydev said:
Good news, may be possible to do "root transiency"
Click to expand...
Click to collapse
Not that I know...

@ RuedasLocas
THANK YOU!

Thanks for all the write-ups and instructions guys.

Need mirrors, my phone refuses to download from mega
Sent from my LG-P880 using Tapatalk 2

im in v20, i want to downgrade, its okay if i dont do factory reset?

vrmanzacky said:
im in v20, i want to downgrade, its okay if i dont do factory reset?
Click to expand...
Click to collapse
Always best if you do
Sent from my LG-P880 using Tapatalk 2

vrmanzacky said:
im in v20, i want to downgrade, its okay if i dont do factory reset?
Click to expand...
Click to collapse
You don't need to... LGFLASH Tool will erase everything.
Sent from my LG-P880 using xda app-developers app

not able to to do this step: After Driver installation, go to device manager select “LGE CDMA USB SERIAL PORT” right click properties then connection setting advanced and set to “com41″
can't find connection setting advanced, im running win8 64bit

Norse_Viking said:
not able to to do this step: After Driver installation, go to device manager select “LGE CDMA USB SERIAL PORT” right click properties then connection setting advanced and set to “com41″
can't find connection setting advanced, im running win8 64bit
Click to expand...
Click to collapse
And why you need to complicate?
Try this:
http://forum.xda-developers.com/showpost.php?p=38838927&postcount=7
I don't know if it works in Win8 but, you can try it...

that doesn't work either, since it wont do anything after i try to check what ports are working, all are just grayed out

Norse_Viking said:
that doesn't work either, since it wont do anything after i try to check what ports are working, all are just grayed out
Click to expand...
Click to collapse
You install the drivers?
Phone was connected in S/W mode?
Be sure that you follow every step on the tutorial, sometimes with the rush we jump some...
God luck :fingers-crossed:

silly me... had to run lgflashtool as admin
did not work either, only got 1 port active, and it failed to download the file to my phone

[Q] need help if someone can...

ok i tryied to use all in one tool and i want to flash to ics to my thrill but as far as i got is on the tool it goes to stage 2 but waiting for device stays there even after i do place to battery in it.. it acts all over again as if it cant find the driver for cosmo i think that is what it is called....but im running windows 7

When it says waiting on device try pulling out the usb and then plug it right back in. I use to have to do that, but if that doesn't work then it may be a driver issue.
Maybe start the tool and when it says waiting for omap4430 device, hold down vol+ and plug in your phone but don't let go of vol+. Pop in battery like normal and it should boot you into download mode. See if that helps get your LG Cosmo driver to install, though it should install as LGE CDMA USB SERIAL PORT. if that doesn't happen, as a last resort uninstall all LG mobile drivers, reboot cpu, download the files from step 1 and step 5 of this post---> http://forum.xda-developers.com/showthread.php?p=39269819 (bag of goodies and wkparks 1.21) Turn off your anti virus and windows defender before doing anything. Once thats done unzip the two files mentioned above. Run the omap flash installer and re install both Sets of LG mobile drivers in the bag of goodies package (second set will pop up a warning for unsigned drivers a few times; hit YES do it anyways, and then re install omap by directing the driver update to the windows drivers folder in the wkparks bootloader1.21 tool. Hopefully this helps.
Here is a much better explaination from drastic00's tutorial. Follow these steps to the T and you should be flashing in no time
" A) Uninstall any LG Drivers:
a1) Open Programs and Features through Control Panel
a2)Find any drivers called "LG United Mobile Driver." Right click and select Uninstall, let it work.
a3)Reboot your pc!
B) Be sure you disabled antivirus/Windows Defender, etc. before unpacking these files.
C) Install OMAP4430 by running "OMAPFlashInstaller."
NOTE: if you have Fastboot installed SKIP this step (if you don't know, you don't have it...), but DO link the driver as in f4.
D) Install the two LG Drivers in the “LG United Mobile Drivers” folder: These are “LGUnitedMobileDriver_S497CA20_WHQL_ML_Ver_1. 0” and “LGUnitedMobileDriver_S497MA20_WHQL_ML_Ver_1. 0” The second one will warn it is unsigned, choose to install anyway (you will have to insist on this a few times here).
E)Reboot your pc!
F)Install PC/phone drivers:
f1)Shut down your phone. Remove external sd card, SIM card and battery.
f2) Open Device Manager from Control Panel
f3) Hold volume up on phone and connect to USB port. Keep holding volume up.
f4)Look for "OMAP4430" blinking on and off in Device Manager with a yellow question mark under "Other Devices." (You can let go of the phone). If you do not see it, look for "TI Boards" blinking in device manager and quickly open the arrow. Then uninstall that OMAP4430 (right click, check box to uninstall device and driver, confirm), disconnect phone and reconnect with volume up. Then...
f.4.1) You will need to 'catch' OMAP4430 (with yellow question mark) by right-clicking on it when it appears under "Other Devices." Choose "Update Driver Software."
f.4.2) Pick "Browse my computer for driver software." Then "Let me pick..."
f.4.3) Leave "All..." selected under Devices. Then "Have Disk."
f.4.4) Navigate to the omap4boot-for_optimus-v1.21 folder and choose "omap_winusb" in the usb_drv_windows folder.
f.4.5) Windows will warn the driver is unsigned. Install anyway. An OMAP4430 device should appear under the list of devices. Confirm the selection. Let the driver install.
f.4.6) Disconnect the phone and again reconnect with volume up held.
f5) You should see a popup at the bottom of your screen about drivers (the LG USB drivers) installing. (If you do not see it, disconnect phone, reboot your pc, and again connect it without battery while holding volume up). When you do see drivers installing, let go of the volume button. Click the popup to see the progress. Let it finish.
f6) Look for “LGE CDMA USB SERIAL PORT” in Device Manager. Right click on it and go to Properties
f7) Select the "Port Settings" tab and click 'Advanced'.
f8) Change 'COM Port Number:' to COM41. Click OK, then OK again.
f9) Disconnect your phone from the PC." (From drastic00's noob tutorial)
Sent from my LG-P925g using xda premium

[Q] HELP!

Hi everyone,
So while I was updating my lg2x to 4.0.4 it got interrupted! I found my phone shut off so I tried to turn it on and it worked even though the LG support tool said the update was not completed but when I opened it, it was working fine with 4.0.4 system BUT after a day it turned off!! I couldn't turn it on anymore, it won't work!! I send it to LG company in my country and they told me they don't know how to deal with it! (lg 2x didn't get released in my country!) I really don't know what to do!? can somebody help me??! :crying: :crying:

It seems you have a hardver problem, but may be not.
Download V30A ics rom.
Download AIO TOOLKIT and install it.
Remove battery from your phone
Connect USB cable to the phone while you are pressing and holding voulme_up and volume_down button.
Stat AIO-TOOLKIT
Select option "I" (capital i) to install APX (NVFLASH recovery) and follow the instrucitons.
Then select option 4 on the next screen option 1 and on the next screen select 1 again, then select 2, hit enter then type "ok" and hit enter
Wait until the process is finished.
Remove phone.
Insert battery then turn it on.
It will boot up into a wierd menu, don't be afraid of that
If it booted up turn off your phone by removing battery
In AIO-TOOLKIT select option 5 hten option 1 then drag and drop the v30A.kdz file to the AIO-Toolkit window and hit enter.
After the extraction press "N"
The extracted files are in the V30A_00 folder where AIO-Toolkit was installed.
Select option 7 in AIO-toolkit then option "a"
"SmartFlash Tool" window appears
Select ROM copy D/L
In the CP bin section select the "P990_CP.fls" file (you extracted it before, it is in the V30C_00 folder)
In the Ap bin section select the "P990_AP.bin" file (it is next to the "P990_CP.fls" file in the V30C_00 folder)
Insert battery again to you phone.
Connect USB cable while you are pressing and holding volume_down button. Hold it until a screen appears telling you that "S/W download".
You can release the button.
Press start in SmartFlash window.
If it the smartflashing process fails due Timeout error, keep trying. Remove batter then do it again from number 21. If it still fails try to flash only P990_CP.fls until it succesfully finished then try to flash P990_AP.bin until it finishes

bitdomo said:
It seems you have a hardver problem, but may be not.
Download V30A ics rom.
Download AIO TOOLKIT and install it.
Remove battery from your phone
Connect USB cable to the phone while you are pressing and holding voulme_up and volume_down button.
Stat AIO-TOOLKIT
Select option "I" (capital i) to install APX (NVFLASH recovery) and follow the instrucitons.
Then select option 4 on the next screen option 1 and on the next screen select 1 again, then select 2, hit enter then type "ok" and hit enter
Wait until the process is finished.
Remove phone.
Insert battery then turn it on.
It will boot up into a wierd menu, don't be afraid of that
If it booted up turn off your phone by removing battery
In AIO-TOOLKIT select option 5 hten option 1 then drag and drop the v30A.kdz file to the AIO-Toolkit window and hit enter.
After the extraction press "N"
The extracted files are in the V30A_00 folder where AIO-Toolkit was installed.
Select option 7 in AIO-toolkit then option "a"
"SmartFlash Tool" window appears
Select ROM copy D/L
In the CP bin section select the "P990_CP.fls" file (you extracted it before, it is in the V30C_00 folder)
In the Ap bin section select the "P990_AP.bin" file (it is next to the "P990_CP.fls" file in the V30C_00 folder)
Insert battery again to you phone.
Connect USB cable while you are pressing and holding volume_down button. Hold it until a screen appears telling you that "S/W download".
You can release the button.
Press start in SmartFlash window.
If it the smartflashing process fails due Timeout error, keep trying. Remove batter then do it again from number 21. If it still fails try to flash only P990_CP.fls until it succesfully finished then try to flash P990_AP.bin until it finishes
Click to expand...
Click to collapse
Thank you so so so much~!
but I only got through the 7th step!! so when I selected option 2 it told me to "Change layout to NEW ICS Partition layout and Unlocked BL" and honestly I don't know how to do so!? can you help me with this too, please?!
sorry for any disturbing!

bessi96 said:
Thank you so so so much~!
but I only got through the 7th step!! so when I selected option 2 it told me to "Change layout to NEW ICS Partition layout and Unlocked BL" and honestly I don't know how to do so!? can you help me with this too, please?!
sorry for any disturbing!
Click to expand...
Click to collapse
Do a screenshot, please. If you want to make it quick, then install Team viewer and send me your ID and password in e-mail: [email protected]

I sent my ID and password~! and here is a screenshot~

What I see from this picture is that you didn't installed the drivers or you didn't connected the phone properly or your phone is truly dead
I didn't get the e-mail
send me a private message in xda then

so I resend my ID and password! I accidently send it to another person!
I hope you got it now!

Problem solved. :highfive:

@bitdomo
Just wanted to know if I can use the list you put in the 2nd post.....good detailed info in it for using the AIOT
I would like to put this in the sticky thread and if possible (if I have any space left in my signature) in my signature too
Thanks my friend

SREEPRAJAY said:
@bitdomo
Just wanted to know if I can use the list you put in the 2nd post.....good detailed info in it for using the AIOT
I would like to put this in the sticky thread and if possible (if I have any space left in my signature) in my signature too
Thanks my friend
Click to expand...
Click to collapse
Yes, you can.
Sent from my LG-P990 using xda app-developers app

bitdomo said:
Yes, you can.
Sent from my LG-P990 using xda app-developers app
Click to expand...
Click to collapse
thanks my friend
luckily my thanks was your 100th too
Best wishes

[Q]LG optimus 4x p-880 IS11LG_systembackup test.signed.apk

I really appreciate any help,
I tried to root my phone, followed the steps here:
http://forum.xda-developers.com/show...45863425638526
I got to step 7., where I wanted to open the app , but all I got was: Unfortunately SystemBackupTest has stopped. How can I fix it ? Knowing that none of lg optimus 4x users faced this problem on most of the internet forums.
A screenshot is attached

the page you included in post is not found!!!
anyways man download this file and follow steps to root!! SAFE i guess u dont need to backup!!
1. Download and install the necessary First you need USB driver for your PC or Laptop to connect your phone. So, grab the LG USB driver and install it on PC.
2.Turn the phone off, press the “volume down” and “power” key to boot, do not release the volume down key until the screen appears with a red triangle robot.
3 Insert the USB connected to the computer, use the “volume” down select “Apply update from ADB, press the power button to determine two lines of yellow text prompts.
4 Double-click ROOT.BAT (PC)
5. Wait until the installation is complete, the phone to return to the menu cursor restart items, press the power button to restart the phone.
6. A Superuser icon appears on the phone, running “information page, click here to check for updates, connect to the network, mandatory update
hope that helps ,,, View attachment 2078934

vieri_202 said:
the page you included in post is not found!!!
anyways man download this file and follow steps to root!! SAFE i guess u dont need to backup!!
1. Download and install the necessary First you need USB driver for your PC or Laptop to connect your phone. So, grab the LG USB driver and install it on PC.
2.Turn the phone off, press the “volume down” and “power” key to boot, do not release the volume down key until the screen appears with a red triangle robot.
3 Insert the USB connected to the computer, use the “volume” down select “Apply update from ADB, press the power button to determine two lines of yellow text prompts.
4 Double-click ROOT.BAT (PC)
5. Wait until the installation is complete, the phone to return to the menu cursor restart items, press the power button to restart the phone.
6. A Superuser icon appears on the phone, running “information page, click here to check for updates, connect to the network, mandatory update
hope that helps ,,, View attachment 2078934
Click to expand...
Click to collapse
The link is :
http://forum.xda-developers.com/showthread.php?t=1818502&nocache=1&z=3345863425638526
nevermind it's ok

vieri_202 said:
the page you included in post is not found!!!
anyways man download this file and follow steps to root!! SAFE i guess u dont need to backup!!
1. Download and install the necessary First you need USB driver for your PC or Laptop to connect your phone. So, grab the LG USB driver and install it on PC.
2.Turn the phone off, press the “volume down” and “power” key to boot, do not release the volume down key until the screen appears with a red triangle robot.
3 Insert the USB connected to the computer, use the “volume” down select “Apply update from ADB, press the power button to determine two lines of yellow text prompts.
4 Double-click ROOT.BAT (PC)
5. Wait until the installation is complete, the phone to return to the menu cursor restart items, press the power button to restart the phone.
6. A Superuser icon appears on the phone, running “information page, click here to check for updates, connect to the network, mandatory update
hope that helps ,,, View attachment 2078934
Click to expand...
Click to collapse
Thanks alot !! :good: :good: :good: I really really appreciate it !! I searched so much on the web before I posted and none was helpful, you should make a post explaining this method and giving it a good tag so it go on the top google search*
I really thankful