How to Root LG Optimus L3 E400

Today our tutorial How to Root LG Optimus L3 E400 on Android 2.3.6 Gingerbread baseband GRK39F firmware version. LG Optimus phones are dead as there is no special features on their Android devices. LG is trying to give tough competition for Samsung and Sony. LG released optimus L3 to compete in budget phone market where already Samsung Galaxy Y and Galaxy Y Duos are holding big chunks. Optimus L3 was priced very competitive with Galaxy Y and most of users who wanted something else than popular Galaxy Y went for L3. Optimus L3 featured an 800 MHz Processor with 350MB RAM. It was running Android 2.3.6 Gingerbread and featured LG UI 3.0. For users of this phone who want to root it and make it much better by removing unwanted stock apps to free some internal memory storage.
Warning: Rooting the LG Optimus L3 E400 will voids the warranty and we are not responsible if the device is damage during flashing process.

Pre-Requisite:

1. In this process you may lose the data, apps and settings. Here we have the list you have to backup such as SMS, Contacts, Images, Audios, Videos, Call Logs, Bookmarks, Wi-Fi, APN as well as MMS settings etc. Late the backup files will help you in restoring them back into your device. You can also use Titanium backup the data along with the apps on your device.

2. Minimum 70% of charged battery is required to accomplish this rooting procedure. Somehow if it stuck or turns off due to power issues than then you will be in great mess.

3. Disable or remove the security suites such as antivirus or firewall from your Computer and LG device so that they won’t interrupt the procedure.

4. Go through the path ‘Settings > Applications > Development > USB debugging’ and turn on to Enable USB Debugging option.

5. Download and Install USB drivers for LG Optimus L3 E400 in PC from here.

Steps and Procedure to Root LG Optimus L3 E400:

1. Download the rooting script tool for your specific Operating System OS. Choose the one you use Linux/OSX from here and Windows from here.

2. Once download is finished extract the zip file with WinZip or WinRAR on your PC.

3. After extraction is completed. Open the folder there you will see a file name with run.bat.

4. You need to run the file ‘run.bat’ on Windows by double clicking it. A dialog window will be opened it prompts you to connect the device to PC.

5. Then, you need to connect your LG Optimus L3 E400 to the Computer via USB data cable.

6. Press any key to continue for starting the rooting process.

Note: In case you are using Linux Operating System or OSX then you need to execute ‘run.sh’ file using the terminal.

7. Once the file has been executed successfully your LG optimus L3 E400 device will reboot and you can see superuser SU icon will appear in apps list. If you want to confirm whether your device is rooted or not. For that go to Google Play store download root checker app and verify the root access.

50 comments :

  1. Thanks dude...worked perfectly for me

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  2. the SuperUser did not pop up.. any advice??

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  3. then download superuser app from Google Play Store. Still you have doubt whether the device is rooted or not then look rooter checker application from Play Store.

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  4. I can't root my phone. Itsays "Waiting for device". What should I do?

    ReplyDelete
    Replies
    1. I'm having the same problem... what can i do?

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    2. have you enabled USB debugging option in settings?

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  5. I am trying to find a jailbreak method. Can somone help me?

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  6. have you installed LG USB device drivers in the PC?
    Enabled USB debugging mode in the device?

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  7. I can't get this to work, it just restarts with no change. . . the cmd batch file sends out messages " failed to copy this and that " and access denied. I have installed all the drivers and done all the things i should've. . . . what do I do now ?

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  8. @Arjun it will take 2 to 3 minutes.

    The reason why you getting this message " failed to copy " because you didn't enabled the unknown resource in security settings in the deviec.

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  9. when i pressed enter, it said "link failed permission denied"
    PLEASE HELP ME!!!!

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  10. where you pressed the enter button?

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  11. cannot create /data/local.prop: permission denied

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    Replies
    1. Before starting the process Go to Phone Settings->security->tick mark the unknown sources.

      Delete
  12. soo... it stopped on "daemon started succesfully".. and it seems to be stuck... should i wait anymore..or just top the process?

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  13. error : more than one device and emulator .. why?

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    Replies
    1. i think you installed Bluestacks application in PC right? better to remove or exit the application before starting to rooting the device.

      Delete
  14. Hi there! I also get the "link failed permission denied" and all the "can't copy" errors. I have the latest LG driver (3.7.2), all the security checked on the device, everything allowed, connected properly. Any ideas of why it can't connect and root? Also my question, if root is succesful, can it be undone if needed? unroot script perhaps?
    Anyway thanks for your effort on making this package! ;)

    ReplyDelete
    Replies
    1. Check once whether you enabled USB debugging mode and unknown sources in security settings.

      Yes you can unroot the device if unroot process is available. Another way to unroot the device is by installing the fresh new OS once again and you will get warranty back.

      Delete
  15. its coming daemon not found
    adb server didn't apk
    tell me what to do?
    plllzzz helpp...!!!!

    ReplyDelete
    Replies
    1. ok download and install adb server drivers in the PC. Restart the pc and follow up the procedure once again http://goo.gl/PSlTJ

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  16. bro still the same msg...even i
    installed adb server driver which you gave..
    plz tell me what to do...

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  17. my phones bootloader is locked from the service can i also root my phone

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    Replies
    1. Yes you can root but first you need to unlock the bootloader from htcdev.com

      Delete
  18. ()lg optimus l3 e400 root tool(window version)
    instruction:
    ! install lg mobile united driver to your pc
    2 enable uvb debugging on your phone3 connect to pc with usb cable
    4 run the script
    press any key to continue...
    waiting for device...
    *daemon not running. start it now*
    *daemon started successfully*
    deviced found.
    link failde permission denied
    rebooting device...
    waiting for device to reboot...
    cannot create /data/local.prop :permission denied
    rebooting device again...
    so on and so dort,...

    still not working any idea how i can root my lg e 400 its not working here..
    always failed cannot copy..

    ReplyDelete
    Replies
    1. hello try it on other PC it will definitely works.

      Delete
    2. LGL3e400: 2.3.6, v10s.
      Tried 3 PC's (winxp,7,vista) a Linux box and two OSX machines, all with the proper ADB's, JDK's, LG-drivers, sudo'd all the stuff in Linux and of course the correct settings on the phone itself. Tried all the OneClick programs and their variations. Tried to downgrade the firmware ...: no go, all still (roughly) the same stuff as the Dwight up here.

      When I go into the root (from a win7pro-box's cmd line) and give the command to root it gives me variations on "not supported". This means the firmware itself is protected, right?

      When I go in to the fastbootloader it will not let me swap files, even when phone is in "recovery mode/emergency mode". So, I have found no way to unlock the bootloader, unlock the flash (recovery) or whatsoever.

      Any thoughts?

      Delete
  19. i have an LG e400 with v10g-oct-31-2012 firmware and it appear link permission denied!! please help me

    ReplyDelete
    Replies
    1. link permission denied means you unable to download the rooting tool right?

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    2. no, it's appear during rooting my phone!! Sorry for bad English!!

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    3. have you enabled unknown sources in security settings?

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  20. thank you very much...
    good job

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  21. Hey I'm stucked at *daemon started successfully* for about 10mins. so I decided to just stop the process. how long should i wait on rooting?

    ReplyDelete
    Replies
    1. The rooting process will take 2 to 3 minutes. Check whether have you enabled USB debugging and Unknown sources in settings or not?

      Delete
  22. It seems that all the problems has to do with the software version on the device. I have a device (lg e400) with software version V10s (feb 11-2013) that i also can't root. If anyone knows a solution please let us know.

    ReplyDelete
    Replies
    1. may be it's also one of the issue newer firmware version will not support rooting. You need to find rooting process for your exact firmware version V10s.

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    2. i have versionv10m-SEP-17-2012 can it work in this version?please reply

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    3. yes it works you can proceed without any problem.

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  23. Hello it has no use all the version with 2.3.6 is not possible to root or brick,I have readed from german website,so everyone must wait for some one to find out to root the 2.3.6. version...

    ReplyDelete
  24. [*] Waiting for device...
    * daemon not running. starting it now *
    * daemon started successfully *
    [*] Device found.
    link failed Permission denied
    [*] Rebooting device...
    [*] Waiting for device to reboot...
    cannot create /data/local.prop: permission denied
    [*] Rebooting device again...
    [*] Waiting for device to reboot...
    [*] Attemping persistence...
    remount failed: Operation not permitted
    failed to copy 'su' to '/system/bin/su': Read-only file system
    Unable to chmod /system/bin/su: No such file or directory
    link failed Read-only file system
    failed to copy 'busybox' to '/system/xbin/busybox': Read-only file system
    Unable to chmod /system/xbin/busybox: No such file or directory
    /system/xbin/busybox: not found
    failed to copy 'Superuser.apk' to '/system/app/Superuser.apk': Read-only file sy
    stem
    [*] Cleaning up...
    rm failed for /data/local.prop, No such file or directory
    rm failed for /data/gpscfg/*, No such file or directory
    Unable to chmod /data/: Operation not permitted
    [*] Rebooting...
    [*] Rooting Complete complete!
    [*] Press any key to exit.
    Druk op een toets om door te gaan. . .

    ReplyDelete
    Replies
    1. have your tick the unknown sources in settings ?

      Delete
  25. How can i unlock bootloader..???
    i have rooted my l3 since past year bt not unlocked the bootloader how to do it.??

    ReplyDelete
    Replies
    1. unlocking bootloader on this device is big complex process and also chances of bricking the phone.

      Delete
  26. i don't no how it works
    my lg is still in 2.3.6 :-( hlp meeeeee ppppppllllllllllllzzzzzzz

    ReplyDelete
    Replies
    1. try above procedure sure it will work on your 2.3.6 Gingerbread OS.

      Delete
  27. The tool(the only one around in the world), just doesn' t work. At least for version 2.3.6 of Android, it is just lame. Period.

    ReplyDelete
  28. Thanks Bro ! Work nice for me.I was searching for this since a long time as my phone is already quite old,but I still want to keep it.

    ReplyDelete