[Q] cant unlock bootloader - LG Optimus L9 P760, P765, P768, P769

Hello guys,
My phone was bootloader unlocked. And my L9's motherboard was fired last week LG service told me; we changed motherboard. And they repaired it. And now I want to unlock my bootloader but it didn't unlock. I tried all methods and if I start the oem-unlock command, my phone is normally rebooted. So I can't unlock my bootloader. My phone's informations in the attachment. Please help me. Thanks...

Anyone has same problem? :crying:

I'm crying too.
Sent from my LG-P769 using XDA Premium 4 mobile app

LaDY Vengeance said:
I'm crying too.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Did you tried flash other KDZ file?

I'm done with flashing those stupid euro kdzs.....hahaha! I'm going to install kuma82's themed rom tonight and that will be it until someone figures out how to use the stock kernel to port a CM 10 for locked bootloaders. LG....you win...for now.
Sent from my LG-P769 using XDA Premium 4 mobile app

kuma82's guide
After trying the manual/KDZ method several times (then giving up) I tried kuma82's guide and it worked for me:
http://forum.xda-developers.com/showthread.php?t=2601480
My phone is dated May 2013, I know there's some discussion about whether LG completely locked L9s after a certain date. Anyway, I was surprised, but for my phone it worked.

Related

[Q] New to the Optimus Line looking for help on several things

Hi, just bought my first Optimus L9 769 not new to android i understand adb and the phone is rooted runnin 4.1.2 stock rom
First question how do i determine if my bootloader is locked
Second if it is locked easiest metheod to unlock it
Third is the cm 10.1 an official or a port and do i need an unlocked bootloader to run it
p.s. i havent been on the rooting side of things for about a year and half and this locked bootloader crap is new all my previous phones didnt have this issue...
yungvilleprod said:
Hi, just bought my first Optimus L9 769 not new to android i understand adb and the phone is rooted runnin 4.1.2 stock rom
First question how do i determine if my bootloader is locked
Second if it is locked easiest metheod to unlock it
Third is the cm 10.1 an official or a port and do i need an unlocked bootloader to run it
p.s. i havent been on the rooting side of things for about a year and half and this locked bootloader crap is new all my previous phones didnt have this issue...
Click to expand...
Click to collapse
1. Its locked. Trust me.
2. Go to carloswii5's thread and follow the steps. Go HERE
3. We have a port, and yes you need to unlock bootloader. Cm10.1 for 769 HERE
Sent from my LG-P769 using Tapatalk 4
geeshiet said:
1. Its locked. Trust me.
2. Go to carloswii5's thread and follow the steps. Go HERE
3. We have a port, and yes you need to unlock bootloader. Cm10.1 for 769 HERE
Sent from my LG-P769 using Tapatalk 4
Click to expand...
Click to collapse
does someone have like written directions its kinda hard to hear what he's saying in the video
Outdated guide post deleted
Eddiejo6 said:
Here's a written guide by the same guy. Just a heads up that this is a long process and you should put off a day to do this. http://forum.xda-developers.com/showthread.php?t=2370835
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
That guide doesn't work.
Sent from my LG-P769 using Tapatalk 4
geeshiet said:
That guide doesn't work.
Sent from my LG-P769 using Tapatalk 4
Click to expand...
Click to collapse
It doesn't? Then I'm sorry but I know that there's a way to open the boot loader by flashing an P760 kdz then open bootloader then flash back but I think that made the screen mirror all the time.
Sent from my LG-P760 using xda app-developers app

[Help] Unlock BL on P769

Are there any new developments on the P769 bootloader unlock problem? I have tried all the steps, flash V20B, wait 30 mins and adb oem unlock, nothing works. FU LG.
Did u flash the radio.zip from the sdcard files? Did u leave screen on while waiting the entire time?
Sent from my LG-P769 using xda app-developers app
matthewstice said:
Did u flash the radio.zip from the sdcard files? Did u leave screen on while waiting the entire time?
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
Yes, I flashed the radio.zip and connected to wifi, but do we need to keep the screen on the entire time?
That's what worked for me first attempt. strong WiFi strong radio
Signal screen on..1 hour..unlock..left phone plugged into PC screen on entire time
Sent from my LG-P769 using xda app-developers app
Notes It seems if you restore your phone tool using LG update tool .. it relocks the bootloader (assuming) in my case i had done it since 10.1 had BT issues ..went back to stock ..and unlocked it again today This is what you do :
what ever rom your on doesnt matter .
1.first Root the phone many way to root the phone .. then install busybox from market and install CWM (using the L9installer apk..Then enable wifi and debugging mode .also enable touches do these before proceding the KDZ!
Then install
2.then using the V20F_00.kdz your root the phone again like in step 1 install busybox from market and install CWM.then apply the touch screen fix .
You should have a working phone now with radio signal.Then wait about 40 mins then do oem-unlock command .. Note it will not boot into LG logo phone will just reboot .. Then to confirm if the bootloader is unlocked go to S/W mode on top it should say bootloader status is unlocked .just did this and flashed CM10.2
Maybe ill clean up this post soon if its too confusing ..
So what you mean is that it doesn't go into the fastboot screen to unlock the bootloader?
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
So what you mean is that it doesn't go into the fastboot screen to unlock the bootloader?
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
No, it just reboots no fastboot screen, no nothing, just turns back on to the lockscreen. LG Y U DO DIS?!
rakeshdas said:
No, it just reboots no fastboot screen, no nothing, just turns back on to the lockscreen. LG Y U DO DIS?!
Click to expand...
Click to collapse
LG would never do this to Nexus users. Imagine the outrage from both the devs and average users?
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
LG would never do this to Nexus users. Imagine the outrage from both the devs and average users?
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
HAHA Yes! But I am going to keep trying. MAYBE I will get lucky? :fingers-crossed:
You know, I just found out that the hard reset might be causing a semi-lock of the bootloader. I'm going to try flashing the kdz twice....ugh.
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
You know, I just found out that the hard reset might be causing a semi-lock of the bootloader. I'm going to try flashing the kdz twice....ugh.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
What do you mean by a Semi-lock?
LaDY Vengeance said:
You know, I just found out that the hard reset might be causing a semi-lock of the bootloader. I'm going to try flashing the kdz twice....ugh.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Good Luck!
And may the force be with you!
sent from my rooted P769 v20f
I'm on YouTube (Toa Kaidoa)
rakeshdas said:
What do you mean by a Semi-lock?
Click to expand...
Click to collapse
It means that the euro kdz becomes partially locked at this point. According to what my friend told me, when the unlock command gets sent, LG checks the status of the bootloader. If they notice a semi-lock, they lock it down.
If that's the case, they are so evil.
Sent from my LG-P769 using XDA Premium 4 mobile app
Since u ppl have tried unlocking on v20 b kdz, how abt giving a try for v20 a Indian kdz for 765 once? Cos I was unsuccessful on v20 b,c,d. Tried for a week n was able to unlock on v20a. Who knws mayb u might turn out lucky lik me
Sent from my LG-P765 using xda app-developers app
Gh0sT.RPG said:
Since u ppl have tried unlocking on v20 b kdz, how abt giving a try for v20 a Indian kdz for 765 once? Cos I was unsuccessful on v20 b,c,d. Tried for a week n was able to unlock on v20a. Who knws mayb u might turn out lucky lik me
Sent from my LG-P765 using xda app-developers app
Click to expand...
Click to collapse
i been trying v20a all day and i cant get it to flash .. the lg program gets error at 6%
txtmikhail said:
i been trying v20a all day and i cant get it to flash .. the lg program gets error at 6%
Click to expand...
Click to collapse
Me too. I can flash every kdz, only v20a not I get an error.
Now i download , and make a try for spanish v20a , maybe
txtmikhail said:
i been trying v20a all day and i cant get it to flash .. the lg program gets error at 6%
Click to expand...
Click to collapse
You need to use fastboot....lol....how many times have I posted that? Anyway, flash ICS u and x with fastboot.
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
You need to use fastboot....lol....how many times have I posted that? Anyway, flash ICS u and x with fastboot.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
This is why we want to flash v20a, to try to unlock. Cause we cant enter to fastboot. (just normal reboots.)
LaDY Vengeance said:
You need to use fastboot....lol....how many times have I posted that? Anyway, flash ICS u and x with fastboot.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Can someone please explain to me what all this ICS and JB U and X thing is? I am lost
I have and it doesn't work... none of the 20a will install for me...
Sent from my LG-P769 using XDA Premium HD app

[Q] Back and Menu Buttons Blinking

Hey there, I'm new to the LG Optimus L9 (P769) community and I don't know if this is normal but I don't remember seeing this when I first turned on my phone. The back and menu buttons blink during boot. Is that normal? The only thing I've done is root and install a custom recovery. It blinks at the LG logo.
That's normal after you install the 2nd init recovery. If you push the vol down button while they're flashing, it takes you to CWM.
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
That's normal after you install the 2nd init recovery. If you push the vol down button while they're flashing, it takes you to CWM.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks
Sent from my LG-P769 using Tapatalk
You're welcome! Now don't try to flash CyanogenMod! It'll give the infamous security error if your bootloader is locked!
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
You're welcome! Now don't try to flash CyanogenMod! It'll give the infamous security error if your bootloader is locked!
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Lol I saw people posting around about it. I was thinking of installing that themed ROM for our device. LG sucks lol. Not only you can't unlock the boot loader you can't access it. I'm so use to being able to fastboot boot.img and recovery. I'm kind of confused about something though. When the phone receives an ota , how does it flash it by itself? I know with HTC devices, it reboots to stock recovery and install and I know you can install ruu in hboot.
Sent from my LG-P769 using Tapatalk
XAlexander_AlexanderX said:
Lol I saw people posting around about it. I was thinking of installing that themed ROM for our device. LG sucks lol. Not only you can't unlock the boot loader you can't access it. I'm so use to being able to fastboot boot.img and recovery. I'm kind of confused about something though. When the phone receives an ota , how does it flash it by itself? I know with HTC devices, it reboots to stock recovery and install and I know you can install ruu in hboot.
Sent from my LG-P769 using Tapatalk
Click to expand...
Click to collapse
That's over my head...lol! LG is now following this trend of removing fastboot....how is that following open source policy again?....anyway, if you check the L9 II thread, you'll see what I mean. These evil people also made the Nexus which can be unlocked in 5 minutes and has fastboot. They like getting on our nerves it seems....*sigh*
Sent from my LG-P769 using XDA Premium 4 mobile app

just some guidence with this lgp769

Hi all, I have rooted my mothers lg p769 tmobile phone with the lgpwn.apk and removed some bloat and have no recovery yet. I want to install a custom recovery cwm twrp whichever is considered stable at this moment in time.
thanks in advance, I'm a little short on time right now is all. shes leaving on the second.
device info:
android version is 4.1.2
baseband version L6260_MODEM_SIC_01.1305.00
kernel version 3.0.31
software version P76920h
You need to unlock the bootloader before installing twrp. And that's not easy.
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
You need to unlock the bootloader before installing twrp. And that's not easy.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
why is it not easy? edited.. this phone . Happpy New year.
thanks in advance for a good guide to follow specifically for flashing twrp after bl unlock. the guides I found are probably good but I am not certain.

[Q] I'm Stupid (bootloader locked and flashing)

First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Firstly, it's stated in the first post of the CM11 thread that you shouldn't be using dual recovery. If you read the thread further, you'll see that it is recommended to use the recovery in DooMKernel to flash. And this requires unlocked bootloader.
Anyways, you can try using Flashtool to flash a stock firmware. Might be able to recover your phone.
xavisaldana said:
First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Click to expand...
Click to collapse
If your BL is locked, you cannot install CM.... coz you cannot install a custom kernel. you should rebuild your phone using SEUS to put a good ROM.
Then you can put whatever ROM you want for LB and root it. but no custom kernel.
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
tuxiqul said:
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
Click to expand...
Click to collapse
Root with the Easy Root Tool, worked like a charm for me : http://forum.xda-developers.com/showthread.php?t=2784900
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
xavisaldana said:
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
Click to expand...
Click to collapse
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
xavisaldana said:
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
Click to expand...
Click to collapse
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
xavisaldana said:
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
Click to expand...
Click to collapse
Yes, you can install anything but non stock based roms and custom kernels
Sent from my D6503 using XDA Premium 4 mobile app
Thanks Bro
Got xposed, rooted and recovery installed.

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