[GUIDE] Unlocked Bootloader on H818!

[pvineeth97]

Hi guys!

NOTE: I got to know that Marshmallow version of H818 is unrootable. Will be releasing new aboot patch for lollipop.
I got the aboot of Lollipop now. It will be patched and uploaded. Then you can root using your usual root method and then flash the patched aboot.

Disclaimer:

/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired. Please
* do some research if you have any concerns about features included in this Recovery
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/

No more secure boot error!

I thank my friend @cerg2010cerg2010 for helping me out in patching the aboot.

ONLY FOR DEVELOPERS
This is the method I followed for K10. K10 has two qualcomm phones .i.e. K420DS & K420N. K420DS & K420N are identical except that K420DS has more RAM. I have the K420DS phone. I found a vulnerable version of firmware for K420N which is rootable and does'nt belong to my country. Got the aboot patched. I went on and flashed the aboot.

Result: It worked! I got into TWRP!

This is the method you need to follow too. Have Patience!

So there is no fool proof method that you will get bootloader unlocked on the firmware you expect it too. If you want to get bootloader unlocked get ready to take risks.


XDA:DevDB Information
A guide to unlock bootloader on H818!, Tool/Utility for the LG G4

Contributors
pvineeth97, cerg2010cerg2010

Version Information
Status: Stable

Created 2017-02-27
Last Updated 2017-02-27

 

[alitavas]

i tried this guide and my phone Hard Bricked
No Download mode No boot
Anyway to fix? (i have a backup from aboot partition)

 

[adds08]

i tried this guide and my phone Hard Bricked
No Download mode No boot
Anyway to fix? (i have a backup from aboot partition)

Which variant are u in?
Is ur device completely blank..meaning no boot logo .. no download mode .. no charging icon .. no recovery??
If u have no dwnload mode then u cannot recovery..
As i mentioned and warned people this meyhods maynot work ..

 

[kessaras]

Can you please output what that command to find aboot gives you?
Because I see wrong path.
Share a screenshot if possible.

People already complained about that and I spared my time to help them with this post here in the previous thread. https://forum.xda-developers.com/g4...bootloader-unlock-lg-g4-t3563898/post71206706

 

[pvineeth97]

i tried this guide and my phone Hard Bricked
No Download mode No boot
Anyway to fix? (i have a backup from aboot partition)

Did you downgrade to Lollipop version of Android?
You most probably would have flashed the wrong partition or the boot partition. Which partition did you flash?

 

[pvineeth97]

Can you please output what that command to find aboot gives you?
Because I see wrong path.
Share a screenshot if possible.

People already complained about that and I spared my time to help them with this post here in the previous thread. https://forum.xda-developers.com/g4...bootloader-unlock-lg-g4-t3563898/post71206706

There is nothing wrong in the code I posted to find aboot partitions. For more details refer to this: https://forum.xda-developers.com/showthread.php?t=2450045

 

[Jarrod666]

Hi guys!

Disclaimer:


No more secure boot error!

I thank my friend @cerg2010cerg2010 for helping me out in patching the aboot.

-> Requirements:
LG G4 LGH818P
Rooted Phone

-> Steps:
(1) Downgrade to Lollipop version of the Android. Download here.

Hi,
When i click on your link i can download this version H818P20g_00_1014.kdz
Or it's a Marshmallow version and not Lolillop version, is it not a problem? or perhaps i don't understand the step.

Thank you

 

[alitavas]

Which variant are u in?
Is ur device completely blank..meaning no boot logo .. no download mode .. no charging icon .. no recovery??
If u have no dwnload mode then u cannot recovery..
As i mentioned and warned people this meyhods maynot work ..

Hmmm
My variant was H818P
My Rom Camuix4
And your answer is no boot logo no download mode no charging icon
Just when i press the power button it will vibrate very short
I sent phone to LG Service hope they won't find i changed something in my phone
I sent my phone to LG because of bootloop problem one week ago and they changed my mother board it was 510 and now is 611
Important things is i flashed this file twice
At first to mmcblk0c8(it was my typing fault)
At the second time to mmcblk0p8

 

[pvineeth97]

Hmmm
My variant was H818P
My Rom Camuix4
And your answer is no boot logo no download mode no charging icon
Just when i press the power button it will vibrate very short
I sent phone to LG Service hope they won't find i changed something in my phone
I sent my phone to LG because of bootloop problem one week ago and they changed my mother board it was 510 and now is 611
Important things is i flashed this file twice
At first to mmcblk0c8(it was my typing fault)
At the second time to mmcblk0p8

How did you find out your aboot partition?

You should be careful on what you type out and which partition you flash on. It happened to me once. I flashed the patched aboot for my phone it was perfectly fine until I flashed( a wrong partition? ) a TWRP I built which bricked my phone. No download mode nothing. I sent it to repair. They repaired it for free.

 

[pvineeth97]

Hmmm
My variant was H818P
My Rom Camuix4
And your answer is no boot logo no download mode no charging icon
Just when i press the power button it will vibrate very short
I sent phone to LG Service hope they won't find i changed something in my phone
I sent my phone to LG because of bootloop problem one week ago and they changed my mother board it was 510 and now is 611
Important things is i flashed this file twice
At first to mmcblk0c8(it was my typing fault)
At the second time to mmcblk0p8

The very first mistake you did is flash it over CamUIX 4 ROM. Did you follow the guide properly? I told you to downgrade to this. Then flash the aboot.

 

[pvineeth97]

Hi,
When i click on your link i can download this version H818P20g_00_1014.kdz
Or it's a Marshmallow version and not Lolillop version, is it not a problem? or perhaps i don't understand the step.

Thank you

The guy who requested me for the patched aboot sent me the aboot file from H818P20g_00_1014. So download the KDZ I mentioned in the guide and then flash the aboot.

 

[pvineeth97]

Which variant are u in?
Is ur device completely blank..meaning no boot logo .. no download mode .. no charging icon .. no recovery??
If u have no dwnload mode then u cannot recovery..
As i mentioned and warned people this meyhods maynot work ..

Don't come to conclusions mate. The guy who tried it and bricked his device has CamUIX 4 ROM installed. I explicitly mentioned in the guide to downgrade to the lower version of Android. I attached a link to the file too... It's not my mistake if people don't read the guide properly and blindly do things.

 

[sumitverma1]

The firmware link you provides is marshmallow rom and its can't be rooted now.how to do your steps because the 1st one is wrong.

Sent from my LG-H818 using XDA-Developers Legacy app

 

[AsHalt]

Is there a H815 version?

Sent from my SM-G610F using Tapatalk

 

[doum]

Deleted

 

[sumitverma1]

Thanks for your awesome post.

Sent from my LG-H818 using XDA-Developers Legacy app

 

[pvineeth97]

The firmware link you provides is marshmallow rom and its can't be rooted now.how to do your steps because the 1st one is wrong.

Sent from my LG-H818 using XDA-Developers Legacy app

Read the guide again. I added a note.

 

[kessaras]

Read the guide again. I added a note.

Nice note. You will release another aboot patch for lollipop without lollipop firmware ?

maybe you want to link them to the lollipop firmware ? https://lg-firmwares.com/download-file/?fileId=706

 

[pvineeth97]

Nice note. You will release another aboot patch for lollipop without lollipop firmware ?

maybe you want to link them to the lollipop firmware ? https://lg-firmwares.com/download-file/?fileId=706

Nice Note :laugh: When I will post the patched aboot for lollipop then I will post the link to the firmware. The current patched aboot I published works for Marshmallow.

 

[Jarrod666]

Nice Note :laugh: When I will post the patched aboot for lollipop then I will post the link to the firmware. The current patched aboot I published works for Marshmallow.

Question: If i use your patched aboot for marshmallow on my rom, it's the stock rom V20g-EUR-xx does it work or it's better to do with the link you provide?