JUNE 2014:NEW GUIDE Easy Root Without PC + Unlock of LG L9 [No Fastboot] by CMahendra

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elesbb

Senior Member
Jun 20, 2010
7,883
5,324
Not only p769, I clearly mentioned that this method works perfectly on Unlocked Bootloader only with any L9 variant phone.

Sent from my C2305 using XDA Free mobile app

Thats what i said? lol. I was just saying that i needed to have SuperSU installed first? I don't understand what you're trying to say in your post. lol
 

Krapo05

Member
Sep 10, 2013
6
1
Thanks a lot !!!

Had lost of troubles since my p760 got its 20i firmware upgrade (Wifi has become worse than ever and I couldn't flash anymore my phone ! :mad: )

Your tutorial worked incerdibely fine on my French phone, I am now trying to flash it with "Superlumial's" ROM as the "pac-p760-4.3-20140128" won't boot (only showing "Game over / insert coin" (maybe not patient enough who knows :p))

THANKS A LOT :D :D
 
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octoshock

New member
Sep 27, 2013
3
0
I have a big problem,i have lg p760 20h and i use flashify and now it shows me the lg logo and it said security error,then the phone turns down,what should i do,i need a fast answer.Sorry for my bad english
 

Krapo05

Member
Sep 10, 2013
6
1
I have a big problem,i have lg p760 20h and i use flashify and now it shows me the lg logo and it said security error,then the phone turns down,what should i do,i need a fast answer.Sorry for my bad english

Guess you will have to do the same I did a few days before : remove the battery, put it back in place start the phone keeping HOME+VOL DOWN pressed : you should be able to restore factory settings ;)
 

octoshock

New member
Sep 27, 2013
3
0
It's not working,i press vol down + home but it said the same thing..."security error".I tried to flash 20h kdz with the offline method,but no luck so far.Here is the log ,if can anyone can help me.
21:31:34 : [C:\LGMobileUpgrade] Try to delete folder
RemoveDirectory1 Error(2):C:\LGMobileUpgrade
Start Date : 2014-06-27 21:31:34
---------- QM Testmode ---------
***** Check Tool Version *****
Tool version : 1.5.4.8
UpgradeDLL version : 1.2.6.7
Current Dir : C:\ProgramData\LGMOBILEAX\B2C_Client
LGE USB Driver Version :
Android PDLV Version :
Android NDLV Version :
******************************************
[C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder
RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone
SetEmerModeAT()
_IsConnectedPhone Call
_IsConnectedPhone(0)
0 - NotConnected.
1 - Normal connect success
2 - Emergency connect success
PhoneŔĚ Notconnect »óĹÂŔ̸ç Port¸¦ ŔâÁö ¸řÇß°í Ĺë˝Ĺ ÇŇĽöľř´Â »óĹÂŔÓ.
ľ÷±×·ąŔ̵ĺ ÇĎ´Ů°ˇ ˝ÇĆĐÇŃ ±â·ĎŔĚ PCżˇ ł˛ľĆŔÖŔ¸¸ç Ćů°ú Ĺë˝ĹŔ» ÇŇĽö ľř±â ¶§ą®żˇ
ČŻ°ćşĐĽ® ´ë˝Ĺ ¸¶Áö¸·żˇ ľ÷±×·ąŔ̵带 ˝ĂµµÇŃ °ŞŔ» °ˇÁö°í ľ÷±×·ąŔĚµĺ ˝Ăµµ¸¦ ÇÔ.
ČŻ°ć şĐĽ® şÎşĐŔş Pass ÇĎ°í File download / Decrypt °úÁ¤Ŕ¸·Î PassÇÔ.
*****CheckOS Start********
21:31:43 : Microsoft_Windows_XP_Professional_Service Pack 3
ŔÎÁő °Ë»ç ĆĶó¸ŢŸ - ESN_IMEI : , Model :
Phone type Compare start
****************CheckAndDownload********************
******Extract Start C:\Users\@#$#\Desktop\V20H_00.kdz*****
Model Dll Dir(C:\ProgramData\LGMOBILEAX\Phone\)
File Size = 601797888
Extract kdz file Success.
Extract Fail C:\ProgramData\LGMOBILEAX\Phone\\V20H.wdb\n
Extract Error(0)
Extract cab file error.
[C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder
!pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR
CLGMobileHttp Class ĽŇ¸ę˝ĂŔŰ.
CLGMobileHttp Class ĽŇ¸ę...
Page_Error şÎşĐŔÔ´Ď´Ů
OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate


L.E.: It works with offline flashing.Sorry for spamming the topic.
 
Last edited:

cmahendra

Inactive Recognized Contributor
Jan 20, 2012
3,843
4,890
Mumbai
Had lost of troubles since my p760 got its 20i firmware upgrade (Wifi has become worse than ever and I couldn't flash anymore my phone ! :mad: )

Your tutorial worked incerdibely fine on my French phone, I am now trying to flash it with "Superlumial's" ROM as the "pac-p760-4.3-20140128" won't boot (only showing "Game over / insert coin" (maybe not patient enough who knows :p))
THANKS A LOT :D :D
You are welcome. Needed some more confirmation after my own successful rooting without pc. :) By the way I did not know SuperLuminal is still famous. You flashed SuperLuminal, my competitor's rom . :p he is my son :laugh: ha ha
Guess you will have to do the same I did a few days before : remove the battery, put it back in place start the phone keeping HOME+VOL DOWN pressed : you should be able to restore factory settings ;)
+1 Thanks for helping. please keep it up. XDA survives because people help. :)

It's not working,i press vol down + home but it said the same thing..."security error".I tried to flash 20h kdz with the offline method,but no luck so far.Here is the log ,if can anyone can help me.
L.E.: It works with offline flashing.Sorry for spamming the topic.
Off topic. This is rooting guide, not flashing discussions. Please be organized.
Interesting'; this L9 is still alive here and still has new updates ...
yes boss, its still live and kicking... :D
 
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Techgod

Senior Member
Aug 19, 2009
628
158
33
Mumbai
I unlocked the device using your method....then i flashed recovery using flashify.....then i tried to flash kitkat 4.4.4 rom but i got status 7 error which was because older recoveries does not support flashing of newest kitkat roms....so i flashed philz recovery....but now only lg logo is coming ...no led blinking....my device is stuck.....also software update mode is not working as pc not recognising the phone.....i think i should take it to the service center to reflash stock....or is there any other method?
 

Krapo05

Member
Sep 10, 2013
6
1
You are welcome. Needed some more confirmation after my own successful rooting without pc. :) By the way I did not know SuperLuminal is still famous. You flashed SuperLuminal, my competitor's rom . :p he is my son :laugh: ha ha

+1 Thanks for helping. please keep it up. XDA survives because people help. :)

Thanks to you and your son to provide us these explanations about how to root & flash andproviding ROMS,
I would have been pleased to answer to your son (and give him feedback) but I am not able to do this on his thread :(

However : I do REALLY appreciate getting rid of these wifi issues I had after an automatic "20i upgrade", thus (maybe due to CM Rom based), I would like to be able to transfer some of my apps to my SD card and it is impossible (used to work with APP2SD and tried Link2SD and can't do what I would like :rolleyes: ) ... could you forward it to him, please :D

And about helping each other is part of the game here, I have been spending time on this site to find answers to my questions and thus I may not be a "dev", you guys helped me a lot, so if we "simple users" can help back, we will ;)
 

xmaniek46

New member
Jun 21, 2012
1
0
freak from Poland

Guide to Unlocked Bootloader (ULBL) of LG L9 P760/P765 and other variants.
=============================================

Things to remember while proceeding.

  • IMPORTANT: You must have P760/P765 with P760 V20B EUROPE OPEN rom flashed on it ....or OTHER UNLOCKABLE ROMS. @Gh0sT.RPG tried unlocking on P765 V20B, V20C & V20D all unsuccessful. But He unlocked on P65 V20A Indian in just few mins.
======================================================
How to Unlock Bootloader and do
Easy Rooting of L9 P760/765/P768

Step 1) Preparations:-

  • Download and Install latest LG Driver on Computer (This is for ADB drivers).
  • Download and extract Android.zip on computer, preferably D drive. The folder "C:\Android" will be automatically created with all necessary files. (You can use D drive also in case of problems saving or running on C drive on Windows 8 or 8.1
  • In Settings >>> Developer Options >>> Select check mark on for "USB Debugging Mode"
  • In Settings >>> Security >>> Select check mark on for "Unknown Resources"
Step 2) ADB Mode Connection:-

Now connect phone to pc with USB cable and change USB Mode to "LG Software Mode". Now your windows will install drivers and in Device Manager you will see following ADB PORT entry "USB Modem Phone ADB Port" (or some other words with name ADB).

attachment.php


Step 3)

Now wait for 30 minutes if you want to unlock bootloader (IMPORTANT Read post) and then open "Command Prompt" and give following commands in windows command prompt.

This should show the list of attached devices in ADB mode like shown below.

attachment.php



Step 4)

Now pass this command in "lower case" only because adb commands are case sensitive.

Phone will restart in pre-fastboot mode.

AT THIS POINT, YOU WILL UNLOCK BOOTLOADER:

You will get two options and to select UNLOCK you need to press VOLUME UP key which will unlock the bootloader permanently and when you press VOLUME UP key your phone is UNLOCKED and phone will go in FastBoot mode.

(*Sorry no screenshot available of these two options. Second option is something else I don't remember now, but forget it.)
Once unlocked this Unlock options screen will never show up in future.

Now you will see "Fast Boot mode" screen like shown below. But you don's have to do anything in Fastboot mode so just Remove USB cable. Remove battery and reinsert battery and you may start phone normally.

You are done! Your LG L9 is now with Unlocked Bootloader.

For more information you can visit my old Guide made for same purpose here

http://xdaforums.com/showthread.php?t=2221102


attachment.php

Just for P760 released by LG in Europe until to end of 2012 it's other way to unlock. Run Terminal (phone MUST be rooted and installed recovery for locked BL) and type su, then reboot oem-unlock and in fastboot mode volume up ...Done! Tested on models from east Europe. Cheers!:eek:
 

gauravgs

Senior Member
Dec 6, 2011
153
13
Uttar Pradesh
I have v20c version of stock rom.

How to unlock it's bootloader then.
I saw in ur post that unlock BL was unsuccessful on v20c version of stock.

Sent from my LG-P765 using XDA Free mobile app
 
security error

WARNING

  • READ AND FOLLOW ALL STEPS CAREFULLY
  • This guide may have errors and may not work for some in various scenario. If you report them, I may try to explain or correct your steps.
  • Read properly and DON'T SEND PM, I will simply ignore PM and laugh on you.
  • Phone must have "UNLOCKED BOOTLOADER" or you may Unlock it with the help of another guide in second post below.
  • USE INFORMATION AT YOU OWN RISK.
==================================================

STEP BY STEP NEW GUIDE to Easy Root Without PC + Unlock of LG L9 [No Fastboot]
DIRECTLY ON PHONE



help pls i have tried this way and i got a security error at bootloop ! :(
 
Last edited:

cmahendra

Inactive Recognized Contributor
Jan 20, 2012
3,843
4,890
Mumbai
i fix the bootloop by getting in the LG PC Suite and holding the + volume up and then going to restore upgrade errors all done after few minutes ! the Q is now i did it few time the new way to install the cwm but always i am getting to security error ! any tips ?
Try CWM 6.0.4.5 mentioned in OP or older version. There is no need to try highest version if you can install and use all features with this version. I am still using this same version.
 
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  • 11
    WARNING

    • READ AND FOLLOW ALL STEPS CAREFULLY
    • This guide may have errors and may not work for some in various scenario. If you report them, I may try to explain or correct your steps.
    • Read properly and DON'T SEND PM, I will simply ignore PM and laugh on you.
    • Phone must have "UNLOCKED BOOTLOADER" or you may Unlock it with the help of another guide in second post below.
    • USE INFORMATION AT YOU OWN RISK.
    ==================================================

    STEP BY STEP NEW GUIDE to Easy Root Without PC + Unlock of LG L9 [No Fastboot]
    DIRECTLY ON PHONE

    Introduction

    • This visual step by step two in one guide can ROOT (unlocked) LG L9 and FLASH RECOVERY without PC.
    • Useful for new LG L9 phone owners or someone who just unbricked phone by flashing stock kdz. Works on any stock rom.
    • ROOTING WAS NEVER A FUN LIKE THIS BEFORE. BYE BYE YOU BLOODY @#!@# FASTBOOT METHOD. SO NO DIFFICULT FASTBOOT DRIVER INSTALLATION. THIS AMAZING ROOTING METHOD DOES NOT NEED FASTBOOT METHOD AT ALL
    • 100% WORKING , TESTED ON MY PHONE AND THEN MADE GUIDE.
    • This is not my own discovery. But for newbies like me, I always have gathered all INFORMATION and FILES together and made this useful step by step guide. Experts can still stay away, than criticize.
    Step 1) Preparations:-

    • In Settings >>> Developer Options >>> Select check mark on for "USB Debugging Mode"
    • In Settings >>> Security >>> Select check mark on for "Unknown Resources"
    • Download this MAIN ROOTING zip file and extract/copy all files in the root folder of sdcard on phone. The list of files can be seen in this image.
    attachment.php


    Step 2) Install LGPwn.apk

    From file-manager, find and Install and Run "LGPwn.apk" which you will show first screen to select as "Root Me" as shown in following screen. Then you will see first time SuperSU asking for granting permission, select "Deny" yes "Deny" for first time. (In some cases this SuperUser permission box may not come, dont worry about that.)

    attachment.php


    Step 3)

    Now you will see four instruction screens as follows, just bypass them by clicking "Next" like we always do. Its nothing special but information about its rooting process.

    attachment.php



    Step 4)

    Now you will see EULA License, you need to read and "Accept", now LGPwn will backup root information and will show next screen titled "Backup" but press "Restore" button in that screen as shown below.


    attachment.php



    Step 5)

    Now you will see "Restore Location" screen, select "Internal Storage"
    Then "Restore" screen where you click on "LGPwn" entry as shown below.

    attachment.php



    Step 6)

    Then "Selection" Screen will come with dialogue box Cross Model, click "OK" and "Continue" as shown below.
    Then another Warning dialogue box appears, click "Restore" and then press "Continue" on main page to go ahead.

    attachment.php



    Step 7)

    Now phone is almost rooted but still some more step to finish it fully.

    attachment.php



    Step 8) Install Super User.

    Now from file manager find , install and run "Super SU" app we copied before. ("eu.chainfire.supersu-1.apk")

    Now your phone is rooted fully. Close SuperSU app.


    attachment.php


    Step 9) Install Recovery with Flashify

    Now from file manager find , install and run "Flashify" app we copied before. ("com.cgollner.flashify-1.apk")

    "Accept" the Disclaimer, "Grant" Superuser permission, and then click on "Choose a file" on Flash Recovery section box.

    attachment.php



    Step 10)

    Now Flashify will ask you for file-manager name to select Recovery file. Select "Flashify File Explorer" and press "Once".
    Now File Explorer will show root area of Phone, here select "SDCARD" and then select file named "recovery-clockwork-touch-6.0.4.5-p760.img" and confirm it by pressing "Yup!"
    Note: You can choose any other compatible recovery like PhilzRecovery or TWRP.

    When Flashify successfully copies recovery in Recovery partition you should press "REBOOT NOW" to go in recovery mode.

    attachment.php


    Step 11)

    When phone reboots you will see CWM 6.0.4.5 Recovery main screen. YOU ARE DONE!!! Enjoy

    attachment.php



    This is all CLICK AND GO kind of thing and everything went very smooth on my LG L9 P765 in single attempt like a charm and took less than 2 minutes.

    Hope it helps! As usual!

    ==========================================
    CREDITS: Thanks a lot to all the maker of...
    1) LGPwn
    2) Flashify
    3) SuperSU
    4) CWM
    4) LG for making this phone
    5) Youtube video which helped to document it.
    6) Anyone who might be responsible. Please remind if I left anyone.
    ==========================================
    HIT THANKS IF YOU LIKE THE INFO-GUIDE
    ==========================================
    4
    Guide to Unlocked Bootloader (ULBL) of LG L9 P760/P765 and other variants.

    Guide to Unlocked Bootloader (ULBL) of LG L9 P760/P765 and other variants.
    =============================================

    Things to remember while proceeding.

    • IMPORTANT: You must have P760/P765 with P760 V20B EUROPE OPEN rom flashed on it ....or OTHER UNLOCKABLE ROMS. @Gh0sT.RPG tried unlocking on P765 V20B, V20C & V20D all unsuccessful. But He unlocked on P65 V20A Indian in just few mins.
    ======================================================
    How to Unlock Bootloader and do
    Easy Rooting of L9 P760/765/P768

    Step 1) Preparations:-

    • Download and Install latest LG Driver on Computer (This is for ADB drivers).
    • Download and extract Android.zip on computer, preferably D drive. The folder "C:\Android" will be automatically created with all necessary files. (You can use D drive also in case of problems saving or running on C drive on Windows 8 or 8.1
    • In Settings >>> Developer Options >>> Select check mark on for "USB Debugging Mode"
    • In Settings >>> Security >>> Select check mark on for "Unknown Resources"
    Step 2) ADB Mode Connection:-

    Now connect phone to pc with USB cable and change USB Mode to "LG Software Mode". Now your windows will install drivers and in Device Manager you will see following ADB PORT entry "USB Modem Phone ADB Port" (or some other words with name ADB).

    attachment.php


    Step 3)

    Now wait for 30 minutes if you want to unlock bootloader (IMPORTANT Read post) and then open "Command Prompt" and give following commands in windows command prompt.

    C:\Users\Mahendra\>cd \android
    C:\Android>adb devices
    This should show the list of attached devices in ADB mode like shown below.

    attachment.php



    Step 4)

    Now pass this command in "lower case" only because adb commands are case sensitive.

    C:Android\>adb reboot oem-unlock
    Phone will restart in pre-fastboot mode.

    AT THIS POINT, YOU WILL UNLOCK BOOTLOADER:

    You will get two options and to select UNLOCK you need to press VOLUME UP key which will unlock the bootloader permanently and when you press VOLUME UP key your phone is UNLOCKED and phone will go in FastBoot mode.

    (*Sorry no screenshot available of these two options. Second option is something else I don't remember now, but forget it.)
    Once unlocked this Unlock options screen will never show up in future.

    Now you will see "Fast Boot mode" screen like shown below. But you don's have to do anything in Fastboot mode so just Remove USB cable. Remove battery and reinsert battery and you may start phone normally.

    You are done! Your LG L9 is now with Unlocked Bootloader.

    For more information you can visit my old Guide made for same purpose here

    http://xdaforums.com/showthread.php?t=2221102


    attachment.php
    2
    That Flashify can flash any recovery.img file?

    I tried Mobile Uncle Tool, it could not flash any recovery. So did try Flashify latest version and it worked.

    Though I did not try TWRP but it flashed all CWM versions I tried. Thats why added four variations. One version without Touch. Technically it should flash any recovery, including Philz too.

    I have LG L9 P760 on V20H firmware. Funny thing is i used LGPwn Tool about a year ago to root my device but did not do extra steps with SuperSU download and stuff just downloaded app installed it and run it, root is running just fine. But I cannot access my Recovery so I guessed that my bootloader is locked. But if it is locked how did LGPwn tool worked for me.
    When I run Recovery mode I get green droid with red ( ! ) over it so i thought it must be cuz bootloader is locked. But when I run your unlock method I just get standard reboot. I have all drives installed as well as full android SDK with Google drives installed that should cover Fastboot (right?). I did follow some tutorials here to install fastboot on my PC but I am not sure who to check if everything is installed tho.
    Now if I run 3845#*760# in phone dialer and check for bootloader lock it says that it is locked.
    What could be issue with this? Drivers on PC or something else on phone?
    Thank you for your work.

    You tried LGPwn a year ago and obviously it was working for few modesl only. I tried this with latest LGPwn, which I guess is February/March 2014 version. With obvious reason it will not work on Locked bootloader. But you have P760 so you have change to unlock it but first flash old stock rom, as mentioned in 2nd post in this thread and also in my other old thread.
    Unlocking Bootloader was possible on only few versions of ICS/JB. Flash ICS V10D then unlock and then try this rooting and installing recovery. Should work. Once you have installed Recovery, you can do anything with this phone :)
    Now fastbook is history, not required at all. :D
    Press thanks button if you like this information. :)
    1
    @cmahendra
    I see, I am very glad that fastboot is gone(kinda). Is there anyother way of flashing custom ROM on to L9 other then method you showed here. I used this method long ago when I got my phone in bad shape after trying to install CWM using Arthas installer. And could not get it working. I mean I can try it again, could not find anything about flashing new rom other then what you posted. As well I could not find V10D but I guess V20B EO can work?
    Thanks.
    Thanks
    Actually my OFFLINE FIX FLASHING method is easiest of all. Only problem with people is the SEQUENCE ERROR. I can still guide you if you post your problem in that thread. I thing I should make some changes in that thread by changing few words or lines where possibly a confusion arises. If interested post your query which step you find it difficult or error.
    1
    I have managed to flash V20B Open Europe to my P760. (ROM is from this thread ) Could not find any other KDZ.
    Now I have restored my device to factory settings just as you said in other thread and this fixed all system apps that where broken.
    Following that I pluged it in and waited for half an hour. Then started cmd and entered all of the commands (adb devices detects my device and Device manager sees my phone as ADB Interface > AndroidNet Sooner Single ADB Interface.) Now I started adb reboot oem-unlock. And it restarted my device but just that it did not go to prefastboot menu or anything similar just regular reboot. I read your old thread on this and cannot find problem. :eek:
    I am asumming you have P760/P765 and its good sign that you did everything perfect until "oem-unlock" command.

    That's strange to see its booting normally. That means you are not getting fastboot mode also, as shown in screenshot? Your BL seems still Locked but there could be some other issue with bootloader. Try with ICS rom. See if the link of ICS are or not. I forgot exactly which V10 version worked for unlocking bootloader. Read old thread carefully.
    Some other devs are claiming they can unlock bootloader with different method. Try that too.