Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

Official bootloader unlock procedure from LG AND the one that works for everyone ;)

OP laufersteppenwolf

7th April 2013, 01:32 AM   |  #1  
laufersteppenwolf's Avatar
OP Forum Moderator / Recognized Developer
Flag Baden-Württemberg
Thanks Meter: 5,783
 
2,644 posts
Join Date:Joined: Jul 2012
Donate to Me
More
I just checked my emails and saw a reply from LG, containing the official unlocking procedure

alright, so here you go:

Requirements
- Linux: no drivers, only adb and fastboot (Linux is preferable, because drivers can't mess something up I've used Xubuntu 12.10 BTW)
- Windows: all drivers (including fastboot drivers) installed and functioning
- a working and updated ADB (for installing ADB, search for tuts here on xda )
- a unlockable firmware which is flashed several hours before trying to unlock the bootloader (and also being connected to the network)
- be willing to recycle all your warranty papers
- and most important: a brain with the ability to read


The Steps

1) charge your phone to 100% (not mentioned by LG, but it helped for me)
2) connect your phone in LG software mode (every mode with an activated adb should work, too)
3) if you have the path to your adb defined, then goto 3a). if not, then goto 3b)
3a) open a terminal and type
Code:
adb reboot oem-unlock
Click image for larger version

Name:	input_adb.jpg
Views:	12481
Size:	16.5 KB
ID:	1893619

3b) open a terminal and type
Code:
cd ~/android-sdk/platform-tools
in Linux or
Code:
cd C:\...
on windows (if you've installed the android-sdk in your home directory under "android-sdk". if not, change it to the directory you've installed it)

then type
Code:
adb reboot oem-unlock
Click image for larger version

Name:	input_adb_cd_2.jpg
Views:	9354
Size:	18.3 KB
ID:	1893621

Click image for larger version

Name:	result_adb.jpg
Views:	7654
Size:	17.5 KB
ID:	1893622

4) now you should see this on your phone:

Click image for larger version

Name:	DSCF3116.jpg
Views:	17462
Size:	253.7 KB
ID:	1893627

do i wanna unlock it? of course i do so press the vol + button ATTENTION: there is no further warning, your whole /data/ partition will be formatted!!!

5) now you should see this, and your BL is unlocked and your /data/ partition is wiped

Click image for larger version

Name:	DSCF3120.jpg
Views:	16789
Size:	255.6 KB
ID:	1893628

6) now pull out your usb cable and your battery, too
7) put your battery back in and boot
8) set up your system
9) now go to the hidden menu and check your BL status (dialer: 3845#*880# --> Bootloader Unlock Check --> Bootloader Unlock Check --> Unlock)

Click image for larger version

Name:	DSCF3122.jpg
Views:	9898
Size:	257.9 KB
ID:	1893629


Some people still think that
Code:
adb reboot bootloader
fastboot oem unlock
is the right command, but guess what: it isn't so please don't use it


Quote:

Please follow below directions to unlock bootloader.

1. Turn on the phone with SIM card, and wait for connection to the real network.

2. Wait for couple of hours.

3. Connect your handset to local PC with USB cable.

4. Enter "adb reboot oem-unlock" in DOS command window.

5. Reboot handset and you can see the bootloader unlock guide on your phone.

6-1. If you press volume up key, handset is bootloader unlock status.

You can download custom image using fastboot command.

6-2 If you press power on key, user doesnot accept unlock bootlaoder and handset normally power on.




so this was the official way now we're gonna take a look into the way, that can unlock every bootloader (at least we've heard nothing opposite )

download this attatched BL_unlock file and extract it
execute the BL-unlock.bat
your bootloader is now unlocked

so what it does:
it copys the calue of the fuse "odm_reserved" to a temporary folder in /data/local
changes the value to an "unlocked" one
and it pushes the changed value back to the fuse


Be aware, that whatever you do, you do it on your own responsibility. I am not responsible for any damage that might occur.
Also keep in mind, that there is no way to relock it. So think before doing anything.
Attached Thumbnails
Click image for larger version

Name:	input_adb_cd.jpg
Views:	6629
Size:	18.1 KB
ID:	1893620   Click image for larger version

Name:	DSCF3126.jpg
Views:	7595
Size:	260.0 KB
ID:	1893630  
Attached Files
File Type: rar BL-unlock_new.rar - [Click for QR Code] (473.6 KB, 21727 views)
Last edited by laufersteppenwolf; 7th July 2013 at 08:03 PM. Reason: updated with new unlock script
The Following 95 Users Say Thank You to laufersteppenwolf For This Useful Post: [ View ]
7th April 2013, 01:56 AM   |  #2  
Member
Thanks Meter: 3
 
36 posts
Join Date:Joined: Feb 2012
No matter which version?
7th April 2013, 02:01 AM   |  #3  
laufersteppenwolf's Avatar
OP Forum Moderator / Recognized Developer
Flag Baden-Württemberg
Thanks Meter: 5,783
 
2,644 posts
Join Date:Joined: Jul 2012
Donate to Me
More
I asked for the official unlock method, and lg said that only euro-open would be unlockable. But i guess it will work on some other firmwares too.

Sent from my LG-P880 using xda premium
The Following 2 Users Say Thank You to laufersteppenwolf For This Useful Post: [ View ]
7th April 2013, 05:21 AM   |  #4  
@non4's Avatar
Senior Member
Flag Gothicus
Thanks Meter: 781
 
3,569 posts
Join Date:Joined: Jun 2012
More
Ask about uk too? Since you got a response and I didn't. Or make a modded kdz that always flashes to eur-xxx since you have mad skills lol

Sent from my rooted P880
7th April 2013, 07:05 AM   |  #5  
nedooo's Avatar
Senior Member
Flag Sarajevo
Thanks Meter: 304
 
1,349 posts
Join Date:Joined: Dec 2010
More
Quote:
Originally Posted by @non4

Ask about uk too? Since you got a response and I didn't. Or make a modded kdz that always flashes to eur-xxx since you have mad skills lol

Sent from my rooted P880

It is not kdz that should be moded it is the kdz flash program...
The Following User Says Thank You to nedooo For This Useful Post: [ View ]
7th April 2013, 08:55 AM   |  #6  
mastershefis's Avatar
Senior Member
Flag Brno
Thanks Meter: 898
 
716 posts
Join Date:Joined: Mar 2011
Donate to Me
More
There must be something which controls the device ID or IMEI, because it is no longer possible to unlock. Allways stack on [LGE_SECURITY] Unlock permission denied. I did tried already all possibility including drivers, differen adb versions, downgrading, updating e.g.

7th April 2013, 09:10 AM   |  #7  
nedooo's Avatar
Senior Member
Flag Sarajevo
Thanks Meter: 304
 
1,349 posts
Join Date:Joined: Dec 2010
More
It is done on Optimus G...maybe someone could contact developer of that app.

https://play.google.com/store/apps/d....freegee&hl=hr

Also XDA dev.

http://forum.xda-developers.com/show....php?t=2094696
7th April 2013, 10:55 AM   |  #8  
Member
Fleet
Thanks Meter: 19
 
94 posts
Join Date:Joined: Feb 2011
Doesn't work on 234. Security error.
The Following User Says Thank You to pierg75 For This Useful Post: [ View ]
7th April 2013, 11:28 AM   |  #9  
Member
Thanks Meter: 7
 
57 posts
Join Date:Joined: Apr 2011
More
On 232.14 - Unlock Permission Denied.

So with a branding you cannot unlock your boot loader. Maybe someone can find a workaround.

i have tried it on kubuntu with ADB.
7th April 2013, 11:28 AM   |  #10  
@non4's Avatar
Senior Member
Flag Gothicus
Thanks Meter: 781
 
3,569 posts
Join Date:Joined: Jun 2012
More
Quote:
Originally Posted by nedooo

It is not kdz that should be moded it is the kdz flash program...

Yeah I'm thinking that, maybe we can spoof the region to lg flashtool or something, if its just flags in the kdz that are read by the flashtool it shouldn't be too hard to patch. Hopefully someone can :thumbup:

Sent from my rooted P880

Post Reply Subscribe to Thread

Tags
4x hd, official bootloader unlock
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes