[p760] Problem with unlocking bootloader - LG Optimus L9 P760, P765, P768, P769

Hey,
I can't unlock bootloader in my LG P760. I've used many different tutorials, till now and nothong happened, phone is always restarting. I have downgraded to official ROM v2l, to make root, and I tried to unlock bootloader via terminal with su, doesn't work. Do you have any idea what I can make to unlock?
Regards

Related

Unlock Bootloader P768

Hi,
Once again im here. After at least 3 tries with different roms (V20B and V20C for P760 EUROPA OPEN // V20C for P765 INDIA) without success to unlock my bootloader. At every time i was following this tutorial http://forum.xda-developers.com/showthread.php?p=40195382#post40195382, always waiting at least 30 minutes to try, but when the command
"adb reboot oem-unlock"
is given, the phone just reboots normally.
I want to know if theres any more ideas for me to try to unlock the bootloader or there any way to know if my bootloader is unlockable? I dont really understand why unlock the bootloader, all i want is CWM and root so i can install custom roms. Thanks in advance.

Trouble Unlocking the bootloader (E5506)

I used the Xperia C method and my Rooting Status say: Bootloader Unlock allowed: Yes; after this process I try to install TWRP with this tutorial: http://forum.xda-developers.com/xpe.../bootloader-unlocked-custom-recovery-t3285521
And I have some troubles. I check my Rooting Status again and this turn to No from Yes. Now my bootloader Secured say Yes, when it say No. And now i can't unlock my bootloader (again).
1.- This screenshot it is when I made my bootloader unlock process. http://prntscr.com/9hiiu
2.- This screen it's when I tried to flash TWRP; the status secure say Yes, after the unlock... http://prntscr.com/9m7ji1
IDK What I have to do.
Can't see your images. Also the thread clearly stated it was only C4 TWRP. The C5 Ultra version is available for Beta testing. If you can flash the recovery your Bootloader is Unlocked simple.
Yes I know. The problem is before the tutorial, thank you very much for responding. Look, what happens is that I had already unlocked the bootloader; Unlock Bootloader I said: Yes. Now I tried to do the procedure you posted, I realized that now Bootloader Unlock my cell saying: No, so I failed in the attempt to flash the recovery. My question was, why after saying Bootloader Unlock: Yes, Unlock Bootloader went on to say: No, and thus the secured: yes.I do not understand what could have happened, why it changed the configuration ?, this was in a period of one week before you will post the tutorial.
Will said bootloader survive an ota update on c4 & c5?

Trying to flash my M4 to older or different ROM so i can unlock bootloader

hi there,
like the title says im trying to flash a different / older/ stock ROM to see if i can unlock the bootloader and or if anyone knows a way i can root my device without the bootloader that would be great too but i think ive expended all my options..... if you can help in any way that would be great! thank you
also i have flashtool downloaded but can not get it to work with my device just keeps saying my bootloader can not be officially unlocked ..... can it be unofficially unlocked?
You have to use the Xperia M2 method to unlock the bootloader as there is still no official way.
There are more than enough guides in other topics where you can read how to unlock your bootloader. First enter the service menu(*"*"service"*"*) and check is it is allowed on your device. If it says 'no' there is no way to unlock. Also if you can unlock don't forget to tick the box in developer options
For root you can afaik just install twrp for locked bootloaders and flash a root (supersu for example)
thanks guys ,
yes i have looked into the tutorials and cannot seem to make it work.
i tried the m2 method and nothing either ..... my bootloader says it cannot be unlocked but ive been reading and apparently there is a way to get around it .... ive successfully flashed different ROMS to try and gain root access too but with no luck
so i guess im asking if anyone has had luck with unclocking there "locked" bootloader on an m4 or if it is even possible at all?
any help is greatly appreciated

Mistakenly locked the bootloader again. Do I need to get permission again to unlock the bootloader?

I accidentally locked my bootloader again while messing around with the mi flash tool. Do I have to get permission again and wait for like two weeks to unlock my bootloader again like the first time I did it?
Use the latest mi unlock tool, mind you it's a hassle to do as it might not unlock properly a few times, just make sure you click unlock right away after your phone boots into fastboot, but it will unlock sooner as you have unlocked it before, so all the best and if you plan on flashing the stock rom don't lock again, just clean flash it.....all the best
D.L.Tejas said:
Use the latest mi unlock tool, mind you it's a hassle to do as it might not unlock properly a few times, just make sure you click unlock right away after your phone boots into fastboot, but it will unlock sooner as you have unlocked it before, so all the best and if you plan on flashing the stock rom don't lock again, just clean flash it.....all the best
Click to expand...
Click to collapse
It worked for me in the first attempt. Thanks.

FIX BOOTLOADER

Samsung has relockbootloader messed up, won't be able to unlock it again???
Specifically, before my samsung A115F had unlocked bootloader and root, because of warranty issue, I locked bootloader + unrooted and reinstalled stock rom then brought it under warranty, now I want to reopen unlockbootloader to root but in bootloader mode the "device unlock" line is gone so there's no way to unlock bootloader, i have tried updating or reinstalling frimware, or downgrading rom, etc..vv... but all to no avail. , I'm really feeling stuck looking forward to a high school teacher, help !!!!!!
soilensan said:
Samsung has relockbootloader messed up, won't be able to unlock it again???
Specifically, before my samsung A115F had unlocked bootloader and root, because of warranty issue, I locked bootloader + unrooted and reinstalled stock rom then brought it under warranty, now I want to reopen unlockbootloader to root but in bootloader mode the "device unlock" line is gone so there's no way to unlock bootloader, i have tried updating or reinstalling frimware, or downgrading rom, etc..vv... but all to no avail. , I'm really feeling stuck looking forward to a high school teacher, help !!!!!!
Click to expand...
Click to collapse
Dude, did you ever get help with the above issue? Am kinda stuck with the same.

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