Database Develop

How to Unlock Bootloader, Flash TWRP, and ROOT LG G4 H811 T-Mobile.

Now, I know this tutorial exists all over the place, like one-click and UnjustifiedDev tutorial but none seemed to work. I am sharing the steps and method I used IN-DEPTH command for command on how to unlock, flash, and root the LG G4 from Tmobile.
NOTE THIS WILL FACTORY RESET YOUR DEVICE SO BACKUP ALL YOUR DATA
1. Activate developer settings by entering the about section and tapping build number 7 times.
2. Enter your developer settings and MAKE sure you have 'Allow OEM unlock' and 'USB Debugging' enabled.
3. Download the latest SuperSU zip and move it onto your SD card.
4. Using the android issue SDK. Open a command window and link it to your SDK folder where ADB is located (typically Platform-Tools)
5. Once the Command window is linked to the folder, connect your device via USB and allow the connection.
6. On the command window type 'adb reboot bootloader' and the device should reboot with the fastboot options on the upper left of the phone screen
7. Once again on the command window type 'fastboot oem unlock' and the command window should say OKAY and complete the action.
8. To Confirm that the device is unlocked type 'fastboot getvar unlock' and the window should respond with 'Unlock: YES'
9. Now download the latest available TWRP and drop it into the platform-tools folder where your ADB.exe is located.
10. On your Command Window type 'fastboot flash recovery "NAME OF TWRP FILE" if you get the error ' cannot load 'twrp-X.X.X.X-h811' you need to add .img to the end of the filename
11. Once the process completes you will see 'target reported max download size of 536870912 bytes
sending 'recovery' (32968 KB)...
OKAY [ 1.088s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time:'
THE FAILED UNKNOWN COMMAND NOTICE CAN BE IGNORED
12. Once the process completes the device may not let you enter recovery from the traditional method using the buttons on the back of the phone so the easiest method is to, on your command window, type
'fastboot boot twrp-2.8.7.0-h811.img' and the device should respond within just a few seconds and reboot into TWRP.
13. Once the device reboots, enter twrp and tap on install and locate the SuperSU.zip and allow it to install.
14. Once the process completes successfully, wipe cache to be safe and reboot your device.
15. Resetup your device and restore your data if necessary and install a root checker from Google Play to confirm root!
THATS IT GUYS! This took me a long time to figure this out and it's a combination of different methods to get it to work!
All credit goes to the Devs of TWRP and SuperSU!
I posted in General because I'm a new user so please move to appropriate forums! thanks!

This thread should be closed as theres already a proper one on here..http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227
Its more of people really dont like to search and read things

Please refer to the first line of my post. I understand that there are a large series of posts about how to do this but this is the only one that works for me even with me running android M.

Shows how to install TWRP for devices on 6.0
marcviado said:
This thread should be closed as theres already a proper one on here..http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227
Its more of people really dont like to search and read things
Click to expand...
Click to collapse
The guide you linked does not show how to unlock the bootloader or install TWRP to allow the install of SU for users that are already on Marshmallow. The other guide would have been perfect if I already had bootloader unlocked and SU installed.

joeyicecream said:
The guide you linked does not show how to unlock the bootloader or install TWRP to allow the install of SU for users that are already on Marshmallow. The other guide would have been perfect if I already had bootloader unlocked and SU installed.
Click to expand...
Click to collapse
Uhm..like i said nobody likes to read now a days lol. If you look closely the guide i linked shows you how to unlock bootloader,flash twrp,root,downgrade,and have all the files you need.

marcviado said:
Uhm..like i said nobody likes to read now a days lol. If you look closely the guide i linked shows you how to unlock bootloader,flash twrp,root,downgrade,and have all the files you need.
Click to expand...
Click to collapse
It is totally there... I looked at that guide for a really long time too. I concede.

joeyicecream said:
The guide you linked does not show how to unlock the bootloader or install TWRP to allow the install of SU for users that are already on Marshmallow. The other guide would have been perfect if I already had bootloader unlocked and SU installed.
Click to expand...
Click to collapse
Yes it does. You do not need to use any codes, just enable oem unlocking in dev settings and type fastboot oem unlock and it will be unlocked.

Can't get twrp installed
Thanks for the step by step directions. I'm having trouble restarting my H811 after I've flashed TWRP. My device doesn't respond to the button method of entering recovery and 'fastboot boot twrp-2.8.7.0-h811.img' command doesn't do anything. My device is 20i and I've unlocked the bootloader. Any ideas? Seems like I've tried everything and can't get TWRP to install. Any help would be great...thanks

I have the G4 LGUS991 gotta can I tell if it's h811?

4. Using the android issue SDK. Open a command window and link it to your SDK folder where ADB is located (typically Platform-Tools)
Click to expand...
Click to collapse
What if your device could not be found despite having the latest LG drivers?

mr_blonde55 said:
Thanks for the step by step directions. I'm having trouble restarting my H811 after I've flashed TWRP. My device doesn't respond to the button method of entering recovery and 'fastboot boot twrp-2.8.7.0-h811.img' command doesn't do anything. My device is 20i and I've unlocked the bootloader. Any ideas? Seems like I've tried everything and can't get TWRP to install. Any help would be great...thanks
Click to expand...
Click to collapse
Can't remember which thread, but I ran into the same problem you have and solved it by using an additional command like fastboot erase userdata. If you google it, you'll see the commands I mean. Basically, I had to factory reset the device through fastboot first (it sits there for several minutes to do this) before installing/booting twrp. And yes, the log will show that the process was successful, not a failure as mentioned by OP. Once I did that, I booted in twrp and flashed the rom zip without any trouble.

So, you guys mean we have Marshmallow on T mobile G4, I didn't get it yet.
Please somebody give me a link to the OTA or update.zip for MM of LG G4

This one worked for me!
This is the only guide that worked for me.
I unlocked bootloader using adb, no problems...
I tried to flash TWPR with fastboot but kept getting errors. Booting into recovery got a dead android minion and red triangle with ! I ran this stupid recovery a dozen times and read a dozen threads with no obvious answers.
This guide says "ignore the error" and run fastboot boot twrp-2.8.7.1-h811.img which immediately opened TWRP and allowed SuperSU-2.71.zip to be flashed.
The part most guides are missing is the fastboot boot twrp-2.8.7.1-h811.img, so my thanks go here. Some other guides are so difficult to read and follow.
Thanks OP !
Yes, MM Android 6.0 went OTA for T-Mobile a month or so ago...

If you are already on Marshmallow, can't you do the 'fastboot oem unluck' with ADB and install SuperSU through the play store to get root? The part for TWRP would only give you the ablity to flash other roms.
Edit: Nevemind I'm wrong. You need TWRP to install SuperSU which roots the phone. SuperSU in the Play Store will only grant root acess to your apps.
Sent from my LG-H811 using XDA-Developers mobile app

NardVa said:
If you are already on Marshmallow, can't you do the 'fastboot oem unluck' with ADB and install SuperSU through the play store to get root? The part for TWRP would only give you the ablity to flash other roms.
Edit: Nevemind I'm wrong. You need TWRP to install SuperSU which roots the phone. SuperSU in the Play Store will only grant root acess to your apps.
Click to expand...
Click to collapse
Could you help me with is or point me in the right direction ? Please & thanks
Sent from my LG-H811 using XDA Labs
---------- Post added at 10:55 PM ---------- Previous post was at 10:54 PM ----------
Majestyk007 said:
This is the only guide that worked for me.
I unlocked bootloader using adb, no problems...
I tried to flash TWPR with fastboot but kept getting errors. Booting into recovery got a dead android minion and red triangle with ! I ran this stupid recovery a dozen times and read a dozen threads with no obvious answers.
This guide says "ignore the error" and run fastboot boot twrp-2.8.7.1-h811.img which immediately opened TWRP and allowed SuperSU-2.71.zip to be flashed.
The part most guides are missing is the fastboot boot twrp-2.8.7.1-h811.img, so my thanks go here. Some other guides are so difficult to read and follow.
Thanks OP !
Yes, MM Android 6.0 went OTA for T-Mobile a month or so ago...
Click to expand...
Click to collapse
I keep getting this problem.
Sent from my LG-H811 using XDA Labs

I've just got a H811 and it automatically updated to Android 6 when I loaded it up. I will be giving this guide a go this evening. Many of the other links on the web are for lollipop and were released when the phone came out, so I'm thankful that this seems straight forward. http://uslugi.nie-spamuj.eu/rtv,1,0.html Hoping that it goes that way.

How to lock bootloader or hide status: bootloader state: unlocked?
Sr for my English!

So I followed this guide and I appear to be soft bricked at best and hard bricked at worst. I did read the other guide linked in the second response and I found a major difference that might be my problem. So in the guide linked in the second response it doesn't say to even try flashing TWRP from fastboot. It says to just boot from it then install it from within TWRP. I followed the steps verbatim and my phone is currently stuck at the T-Mobile splash screen. Any suggestions? I have tried to boot into recovery by holding down and the power and releasing the power for a second when the logo comes up. I get into the Factory data reset screen and select Yes twice then the green guy shows up and the phone resets but stays at the T-Mobile splash screen. I don't have ADB or fastboot with the phone in this state.

hi Guys,
So i just wanted to make sure and present my ask -
So, currently twrp flashing and obtaining root is still buggy for those who have android 6.0 preinstalled? Is this a correct assumption?
Also, my ask - I dont want root but i would like a custom recovery so that I may flash custom fonts. My work email (Good for Enterprise) is very much needed (although i hate it to the core).
Can someone please answer me / correct if I mentioned something wrong?
Thanks

rmdeathwish said:
hi Guys,
So i just wanted to make sure and present my ask -
So, currently twrp flashing and obtaining root is still buggy for those who have android 6.0 preinstalled? Is this a correct assumption?
Also, my ask - I dont want root but i would like a custom recovery so that I may flash custom fonts. My work email (Good for Enterprise) is very much needed (although i hate it to the core).
Can someone please answer me / correct if I mentioned something wrong?
Thanks
Click to expand...
Click to collapse
It's not buggy at all. All the tedium has already been bypassed if you already have Marshmallow installed.
Follow autoprime's original guide, steps 2, 4, 5, 6, and 8 under the Bootloader OEM Unlock + Root section. I would recommend a more up-to-date version of TWRP than 2.8.7.1 though. Go to TWRP's download site for the latest version.

How to unlock BOOTLOADER and Install any zip file on your LG NEXUS 5 D820 using CWM

************
First, I am not responsible if you damage your phone in any way.
Also you might back up your phone's data completely because after unlocking bootloader you can lose all your installed data.
*************
So, first step is unlock the bootloader. First go into
Setiing> About Phone > Press Build Number A couple of time until it shows you are a developer now > go back > Developer Options > Turn on USB debugging.
After that, go to your bootloader, by powering off your phone and once it is powered off press the Volume down key + Power button until something appears with a vibration.
Now download adb and fastboot from this link:
http://*******/1Zsyme
After downloading it, install it. And you can install it easily with no problem. Just make a folder in your windows drive of :
C:\Android-adb\
And you are good to go.
Now goto that folder (C:\Android-adb\) and press SHIFT+CTRL+RIGHT-CLICK together or just SHIFT+CTRL first and then RIGHT-CLICK and then click "open command window here".
Now connect your nexus 5 and check if your PC makes a sound like when you connect a external device.
If yes, then you are good to go. Else try connecting it several times to automatically make the PC install any drivers.
After this, go to that DOS type window and write:
fastboot devices
(press enter to activate any command)
If you it shows a serial number then you are doing fine.
After this, write this command in that CMD.exe window:
fastboot oem unlock
and wait until something pop-ups in your phone. It might be a warning, read it carefully and using your volume up or down key cycle through the options and using power button select yes. And it might reboot on it's own else restart manually by pressing the power button for 10 or 15 sec until you see your screen with a unlocked lock which means you have successfully unlocked the device.
Now after that, it's finally time to FLASH recovery file.
For this to happen you need to download CWM latest version from here:
http://*******/1Zt1Fs
It's latest for HAMMERHEAD or NEXUS 5!!!!
Now, again go to the bootloader as described in the beginning.
Now you can also copy the recovery zip file by your data cable of your phone by turning in on normally and also from bootloader.
How to do it from bootloader? Here's how too.
Now you have to be on the bootloader screen. Now goto the same CMD.exe and write:
adb push filename.zip /storage/emulated/0/
adb push filename.img /storage/emulated/0/
If you get any error ask me.
Now it might get some time to be moved to that.
(Data Cable should be attached to do so, also the RECOVERY img file should be in C:\Android-adb\ this folder to be moved to PHONE)
Now, you might have successfully moved the zip file to your phone. So now write this command to flash Recovery.img file:
fastboot flash recovery your_recovery_image_name.img
After this, it will FLASH the recovery file. Until it's installed successfully wait till then.
Once it is FLASHED, now cycle to recovery mode using volume buttons from the BOOTLOADER and wait till it gets there:
Now you will see some options, but you need to flash a zip file so cycle again using volume buttons and select anyone using power button. So select:
install zip
Now select choose zip from /sdcard
Now you are in your internal storage's directory where you moved your zip files from CMD.exe. Just select it and you are done. go back and reboot system now. And you are done.
Don't forget to say thanks if you find it helpful in any way.
Also report to me if you get any errors between in it. By the way, I didn't have any errors in my journey to do this in first time.

You should point out and highlight that unlocking the bootloader will wipe all data.
Sent from my Nexus 5 using Tapatalk 2

You do not need USB debugging for fastboot, you do not need to open fastboot or adb within the directory they are install in, you...
There are already guides, which are more accurate and up to date, to direct people through the process. Who uses CWM?

wangdaning said:
You do not need USB debugging for fastboot, you do not need to open fastboot or adb within the directory they are install in, you...
There are already guides, which are more accurate and up to date, to direct people through the process. Who uses CWM?
Click to expand...
Click to collapse
TWRP not worked for me. I use and recommend CWM. TWRP is full of bugs and does not show errors and hangs. But CWM is the best.

ddimple4 said:
You should point out and highlight that unlocking the bootloader will wipe all data.
Sent from my Nexus 5 using Tapatalk 2
Click to expand...
Click to collapse
Thanks. I did mentioned but didn't highlight.

Except for the fact that CWM is out of date and not maintained for our device.
---------- Post added at 05:53 AM ---------- Previous post was at 05:52 AM ----------
Except CWM is out of date and not maintained for our device. TWRP is not full of bugs.

What is the point of this thread? Isn't this all common knowledge?

Google says you need to hold VOL UP, VOL DOWN, and POWER to boot into fastboot, but I've used just VOL DOWN and POWER on my N5.
fastboot oem unlock has been superseded by fastboot flashing unlock, though it still works for the N5.
You can download the Android ADK CLI tools from https://developer.android.com/sdk/index.html . Always point to the authoritative source.
You'll need to be in the \platform-tools directory UNLESS you add it to the PATH.
So far's I know, ADB will not push a file while you're in fastboot. You can just flash the recovery file from the directory you have it, e.g. fastboot flash recovery .\your_recovery_image.img.
Very nice of you to post, OP, but you've got a few things wrong in your guide. Read some others to find your errors, and keep writing, Android needs informed enthusiasts and writers.

Yeah, it's 2016. Why was this thread even made? It's either common knowledge, or there are a hundred other guides about doing this.
Plus, who the hell uses cwm these days? Twrp or don't waste your time.
This whole post feels like something from 4 years ago.

GldRush98 said:
Yeah, it's 2016. Why was this thread even made? It's either common knowledge, or there are a hundred other guides about doing this.
Plus, who the hell uses cwm these days? Twrp or don't waste your time.
This whole post feels like something from 4 years ago.
Click to expand...
Click to collapse
I'm still using CWM. What's wrong with that?
// Tapatalk on Nexus 4/5 //

ChromeJob said:
I'm still using CWM. What's wrong with that?
// Tapatalk on Nexus 4/5 //
Click to expand...
Click to collapse
Outdated for years.

ChromeJob said:
I'm still using CWM. What's wrong with that?
// Tapatalk on Nexus 4/5 //
Click to expand...
Click to collapse
It's outdated, no updates. Last I heard some of the CWM team are now contributing to TWRP. It's pretty much the official unofficial Android custom recovery at this point. You will also have a lot of issues trying to flash or update on older versions of TWRP or other recoveries that aren't updated due to file structure changes in newer Android versions.

RoyJ said:
It's outdated, no updates. Last I heard some of the CWM team are now contributing to TWRP. It's pretty much the official unofficial Android custom recovery at this point. You will also have a lot of issues trying to flash or update on older versions of TWRP or other recoveries that aren't updated due to file structure changes in newer Android versions.
Click to expand...
Click to collapse
I see the light. CWM team seem to have abandoned Helium, too; no longer works on systemless root. That's second or third app they've simply gotten bored with and not continued development.

[STOCK][M][TMO] Guide H811 20i & 20o Bootloader Unlock + Root + TWRP

Note : This guide is for H-81120-I & H-81120-O the latest update any firmware version below it will cause hard-brick so be careful before attempting anything, i wont be held responsible.
As a user with less knowledge about Commands and all, i was searching for answers by reading threads here and there and found my answers though some time tricky and sometimes easy.
Also in reading those threads i found many fellow members stumble upon resulting Soft bricks and in some cases a Hard brick or can say making their beloved G4 a paper weight.
So i thought i must put some really easy steps in order to clearly guide people like me who are too noob to understand the sophisticated developers steps.
Another reason for this Thread is also i saw many people asking about how to etc after updating to 20-O update for our H811 MM.
Few things to Prepare before Start
1- Properly Install Drivers for your H811 Variant of G4, cant find them Install LG Bridge.
2- Read the Whole thread before starting anything.
3- Confirm that all requirements are full filled and your variant is capable of everything mention in the OP.
4- Enable Developer Option then inside it enable OEM unlock and Usb debugging.
5- Always use Command prompt as Administrator.
6- Make a folder name G4 and paste all the file required for the unlocking in it for easy access and remembrance.
7- For Safer side after unlocking the bootloader boot into TWRP from fast boot and do not install TWRP.
8- Flash your SuperSU after that boot into android and see if all works.
9- Again Via Fastboot boot into TWRP make a backup of everything working fine. Boot into android.
0- Again same Via Fastboot boot into TWRP and now install your TWRP image via TWRP install function. So if by any means this is the culprit you can still revive your phone via your backup.
Attachments to Download
1- Adb Package can be found Here.
2- Download the latest TWRP.img 3.0+ from Here . This file needs to be on your computer and external sdcard.
3- Download the latest SuperSu zip (2.67+) from Here [Thanks to Chainfire] and stick on external sdcard as well.
Since downloading is complete now simply unzip the adb folder (containing fastboot by default) and paste both the TWRP image file and SUPERSU zip inside it.
Now Hold Shift and Open Command prompt here.
1- Input command to see if your device is visible in ADB.
Code:
adb devices
if you see your device and the status is off line then there will be a prompt on your G4 screen waiting for approval, accept it and input same command now all will be fine.
2- Now input below commands one by one. ( All credits to Autoprime )
Code:
adb reboot bootloader ( This will reboot your device to Fastboot mode )
fastboot oem unlock ( This will wipe all your data )
fastboot getvar unlocked ( This will check your bootloader status: Should be successful )
fastboot boot twrp-3.0.2-0-h811.img ( Phone boots TWRP ) Please put the full file name with .img extension or it wont work.
3- Now the Phone should be in TWRP install SuperSU from there which you have already pasted inside your external SD card.
4- Reboot to system and see if SuperSU is installed. In some cases First flash of SuperSU does not work if your case is same the again boot to Fastboot and from there boot into recovery, since your bootloader is unlocked no need to repeat the unlock OEM command.
5- Now for safer side follow the steps 7, 9, 0 mention in Preparation heading above.
Hopefully all will be in your favor.
Useful Links if you still fail
Kdz 20-O after download must be unzipped
H81120o_00_0613.kdz
LGUP Software:
( All credits to MicroMod777 )
Disclaimer: Nothing in this thread is my work, if i have missed any credit please do let me know i will add. I know several guides are available for same purpose so if any body finds it offending any rights can ask the moderators to remove this thread. The purpose only is to guide simple people like me to save their devices from getting bricked.

As by reading the thread many people are falling for permanent TWRP installation as its mention in the OP anyways for people not getting permanent Recovery follow below:
Boot to TWRP from fastboot Bootloader
When recovery comes up click Install >>>> then in the right below corner you ll see a tab for IMAGE >>> press it browse the recovery IMG which you stored in your SD card >>> swipe to flash >>> From asking where to install >>> select recovery >>> DONE.

SignatureBoy said:
Attachments to Download
1- Adb Package can be found Here.
2- Download the from Here . This file needs to be on your computer and external sdcard.
3- Download the latest SuperSu zip (2.67+) from Here [Thanks to Chainfire] and stick on external sdcard as well.
Click to expand...
Click to collapse
Indeed needs to be in both but needs to be in the same Folder as Fastboot file, if not wont work.
beside will be cool if you add a NOTE about if they are in 20o they must stick with 20o base roms, if not they'll get Hard-Brick.

DrakenFX said:
Indeed needs to be in both but needs to be in the same Folder as Fastboot file, if not wont work.
beside will be cool if you add a NOTE about if they are in 20o they must stick with 20o base roms, if not they'll get Hard-Brick.
Click to expand...
Click to collapse
the ADB package i uploaded contains the Fastboot inside it
The thread clearly states it for 20-O

SignatureBoy said:
the ADB package i uploaded contains the Fastboot inside it
Click to expand...
Click to collapse
ok i meant the TWRP file needs to be in the same folder where Fastboot file is

DrakenFX said:
ok i meant the TWRP file needs to be in the same folder where Fastboot file is
Click to expand...
Click to collapse
That is also mention if you read the first post,
Since downloading is complete now simply make a folder and put all files downloaded inside it unzip the adb folder and paste both the TWRP image file and SUPERSU zip inside it.
Click to expand...
Click to collapse

SignatureBoy said:
DrakenFX said:
beside will be cool if you add a NOTE about if they are in 20o they must stick with 20o base roms, if not they'll get Hard-Brick.
Click to expand...
Click to collapse
The thread clearly states it for 20-O
Click to expand...
Click to collapse
Guys,
If I read it right:
LG G4 must be on 20o (stock) to follow this instruction.
If it’s on 20i or below, it must be updated to 20o (OTA or whatever) first!
It might be obvious for you, but not for me.
Again, but better be safe, then sorry.

ApokrifX said:
Guys,
If I read it right:
LG G4 must be on 20o (stock) to follow this instruction.
If it’s on 20i or below, it must be updated to 20o (OTA or whatever) first!
It might be obvious for you, but not for me.
Again, but better be safe, then sorry.
Click to expand...
Click to collapse
yes it is for 20-O only

SignatureBoy said:
yes it is for 20-O only
Click to expand...
Click to collapse
Thanks for clarification. I’d change 1st post a bit:
Few things to Prepare before Start
0. LG G4 with 20o (stock) firmware.

When I do adb reboot bootloader it just boots me back into Android... shouldn't it take me to the Fastboot screen?
---------- Post added at 06:41 PM ---------- Previous post was at 06:39 PM ----------
DanGarion said:
When I do adb reboot bootloader it just boots me back into Android... shouldn't it take me to the Fastboot screen?
Click to expand...
Click to collapse
Nevermind, I forgot about OEM Unlock...

thanks for the write up

This is not specific to 20o. It's the same steps we've been using all along. Nothing new to see here.
Sent from my LG-H811 using XDA-Developers mobile app

problem with fastboot
Thanks you for helping:fingers-crossed:

problem with fastboot
Hi,
I am a newbie in xda. I am trying to root and install TWRP into my lg g4. I am using software version H81120o. I checked enable OEM unlock and USB debugging. I have downloaded lg driver though lg bridge and all the files from the post. However, I got two problem while installing the twrp-3.0.2-0-h811.img.
1st problem (stuck here and need to reboot also not showing h811 on "the list of devices attached" after typing command "adb reboot bootloader"):
C:\Windows\system32>adb devices
List of devices attached
LGH811xxxxxxxx device
C:\Windows\system32>adb reboot bootloader
C:\Windows\system32>fastboot oem unlock
...
FAILED (remote: Already unlocked)
finished. total time: 0.012s
C:\Windows\system32>fastboot getvar unlocked
unlocked: yes
finished. total time: 0.004s
C:\Windows\system32>fastboot boot twrp-3.0.2-0-h811.img
cannot load 'twrp-3.0.2-0-h811.img': No error
2. 2nd problem(stuck here and need to reboot):
C:\Windows\system32>fastboot boot twrp-3.0.2-0-h811.img
< waiting for device >
I checked online this problem might do with driver not up to date. Under device manager, my lg g4 is recognized under android device with android bootloader interface.
What should I do now?
Thanks you for helping:fingers-crossed:

This Root-Method worked like a charm... The only issue I'm running into is for the TWRP recovery to actually stick. When i manually reboot into recovery I get the little android guy with his chest open and the red triangle with the "!" in the middle.....am I doing something wrong by any chance??

I did everything but can't seem to get TWRP installed

Thanks a lot for this write up. I have been trying for about 2 weeks to root my g4 and it worked finally, So many thanks to you

The Remedy said:
This Root-Method worked like a charm... The only issue I'm running into is for the TWRP recovery to actually stick. When i manually reboot into recovery I get the little android guy with his chest open and the red triangle with the "!" in the middle.....am I doing something wrong by any chance??
Click to expand...
Click to collapse
same problem here but I just now got it working...sort of . I still can not make anything come up except the factory data reset when I use the phone volume and power button.
I thought it might be just that I wasn't coordinated enough so I downloaded this small app to do a recovery reboot.
After I installed the app and used it, I got the little android guy with his chest opened with the red triangle. I took out my battery, put it back in and booted my phone with the power button.
I then connected my phone to computer via usb and went back into adb and opened TWRP and installed the twrp-3.0.2-0-h811.img again but this time I looked around a little more first, and noticed a setting to either install in boot or recovery partition. I selected recovery partition (neither were selected) and installed it. Now I can boot to TWRP recovery with the app I installed but still nothing but factory data reset with the volume and power buttons. I can live with this for a while until I can maybe find a solution.

I had the same issue but when u get into twrp make sure the IMG is in your SD card and to permanently have twrp installed go to home and press install.. Choose from image and install hope this helps
Sent from my LGLS992 using Tapatalk

fuzzy_ said:
same problem here but I just now got it working...sort of ................
Now I can boot to TWRP recovery with the app I installed but still nothing but factory data reset with the volume and power buttons. I can live with this for a while until I can maybe find a solution.
Click to expand...
Click to collapse
In regard to booting into TWRP recovery with just the power and vol buttons, I just read this on another thread:
It boots into what appears to look like a default LG G4 factory reset page. For me, i clicked reset, and then yes, and surprisingly it brought me to where i wanted to go. TWRP Recovery.
I tried this and it worked for me as well.
I had been there before and tried it and it did a factory reset after I had spent an hour or two tweaking my phone, I was not a happy person. This time I did feel almost positive I had TWRP installed correctly and did not have nearly as much time spent getting things set up like I want them on my phone...It was still scary pressing that reset button and yes button.
If you don't have TWRP (or maybe some other recovery) installed it will factory reset your phone. I just thought I would share this and what happened with me. Do it at your own risk.

Softbrick achieved, need help

P8 Lite, I can boot into Fastboot&Rescue, normal boot gives a black screen after the Huawei logo. Recovery and force download from SD does not work.
I can boot into EMUI recovery by holding Vol Up in Fastboot, which gives me the options of Reboot, Shutdown and "Download new version and recovery" (which fails).
I tried the Unbrick steps from the Mega-Thread, and also flashed the Huawei P8 Lite version of TWRP to recovery - but it still only loads the EMUI Huawei eRecovery. Bootloader is unlocked.
Any ideas on what to do next before my girlfriend is going to kill me?

I tried everything in this thread:
http://forum.xda-developers.com/p8lite/general/hand-fixing-bootloop-t3464740
to no avail. One thing I noticed is that the link given in the Fastboot menu links to a Chinese (?) website - http://zh.ui.vmall.com/emotiondownload.php?mod=restore - I'm not sure if this is indicative of me having a device for the East Asian markets and if there are any software differences?

Sorry for the triple post - now I actually managed to boot into TWRP (the trick is disconnecting the USB cable before booting into recovery), I wiped everything, re-tried the flash all from the Mega thread, and it's still not working - Huawei logo is shown, then black screen/power off(?).

GfIsGonnaKillMe said:
Sorry for the triple post - now I actually managed to boot into TWRP (the trick is disconnecting the USB cable before booting into recovery), I wiped everything, re-tried the flash all from the Mega thread, and it's still not working - Huawei logo is shown, then black screen/power off(?).
Click to expand...
Click to collapse
Hi, when you power on your device to boot into EMUI, does it just show the red Huawei logo, or does it also show the boot animation (the same logo dancing and moving on the screen and then becomes static)?

XePeleato said:
Hi, when you power on your device to boot into EMUI, does it just show the red Huawei logo, or does it also show the boot animation (the same logo dancing and moving on the screen and then becomes static)?
Click to expand...
Click to collapse
Just the very static image, it doesn't even go into the animation.
Edit: this is a newly bought P8 Lite, the Box says Android 5.0, don't know if relevant?
by now I've wiped stuff with TWRP more times than I can count, and tried manually flashing the boot, recovery, cust and system of b132, b170, b190, and b564 to no avail

GfIsGonnaKillMe said:
Just the very static image, it doesn't even go into the animation.
Click to expand...
Click to collapse
Alright, so, since you can get into TWRP, inside TWRP go to Advanced > File manager and get this file: /sys/fs/pstore/console-ramoops and paste it to the internal storage or the sdcard, then via USB paste it to your computer and upload it somewhere, I'd like to check it.

XePeleato said:
Alright, so, since you can get into TWRP, inside TWRP go to Advanced > File manager and get this file: /sys/fs/pstore/console-ramoops and paste it to the internal storage or the sdcard, then via USB paste it to your computer and upload it somewhere, I'd like to check it.
Click to expand...
Click to collapse
http://pastebin.com/Hchyjqcz
I hope I did everything right! Currently flashed 132 boot, system and cust with TWRP in recovery

GfIsGonnaKillMe said:
http://pastebin.com/Hchyjqcz
I hope I did everything right! Currently flashed 132 boot, system and cust with TWRP in recovery
Click to expand...
Click to collapse
Yes, I found what I wanted, the kernel panics. What have you exactly done to the device? That would definitely help to know how to solve it.

XePeleato said:
Yes, I found what I wanted, the kernel panics. What have you exactly done to the device? That would definitely help to know how to solve it.
Click to expand...
Click to collapse
I wish I knew! I tried to root it the same way I rooted my other P8 Lite, which worked fine in the beginning (unlocking bootloader) and ****ed up somewhere between pushing SuperSU to the device and executing it. Then I tried to flash stockrecovery.img back, and suddenly the device was broken. Next thing I did was follow the guide in the Mega Thread (I think resetting to b052) which didn't help either. Then worked my way through the suggestion in the other thread. :silly:
edit: judging by my google history, the problems started when the recovery returned a segmentation fault instead of installing SuperSU as it would've been supposed to.

GfIsGonnaKillMe said:
I wish I knew! I tried to root it the same way I rooted my other P8 Lite, which worked fine in the beginning (unlocking bootloader) and ****ed up somewhere between pushing SuperSU to the device and executing it. Then I tried to flash stockrecovery.img back, and suddenly the device was broken. Next thing I did was follow the guide in the Mega Thread (I think resetting to b052) which didn't help either. Then worked my way through the suggestion in the other thread. :silly:
edit: judging by my google history, the problems started when the recovery returned a segmentation fault instead of installing SuperSU as it would've been supposed to.
Click to expand...
Click to collapse
[ 8.389146s][pid:1,cpu1,init]BUG: failure at /cloud/jenkinswh/ci/workspace/Alice_Channel_ANDROID/android_code/kernel/drivers/video/hisi/hi6220/balong_compose.c:613/vpu_on_notice_ade()!
This is suspicious, ADE is related to graphics, I don't really know how could that happen jsut by flashing a couple of things, but I'll look into it, I just need some time.

XePeleato said:
This is suspicious, ADE is related to graphics, I don't really know how could that happen jsut by flashing a couple of things, but I'll look into it, I just need some time.
Click to expand...
Click to collapse
It is very nice of you to look into this! Worst case scenario, the device was broken from the start and has now lost its warranty (though I booted it up once without problems right in the beginning).
For the main problem - which is my gf - I simply factory reset my own P8 Lite and put the stickers from the new one on it. Now I don't have a phone, but at least I get to keep my relationship
ninja edit: checking my terminal history, I remember trying to fix the not-installing SuperSU by trying fastboot -w and fastboot format cache as recommended elsewhere, but both failed
Playing around with it again, it seems the only fastboot commands working are fastboot flash and fastboot reboot, everything else is giving a "FAILED (remote: Command not allowed)" error, even for things like getvar
flashing b564 allows me to get into stock recovery, will try dload update now!!
EDIT: IT WORKS!!!
Things I learned from this:
- it is important to flash right update version
- use dload if you can boot into stock recovery
- recovery will only be loaded if not connected via USB, otherwise EMUI crap will launch
- vendors do not always have correct information on device package!!

GfIsGonnaKillMe said:
P8 Lite, I can boot into Fastboot&Rescue, normal boot gives a black screen after the Huawei logo. Recovery and force download from SD does not work.
I can boot into EMUI recovery by holding Vol Up in Fastboot, which gives me the options of Reboot, Shutdown and "Download new version and recovery" (which fails).
I tried the Unbrick steps from the Mega-Thread, and also flashed the Huawei P8 Lite version of TWRP to recovery - but it still only loads the EMUI Huawei eRecovery. Bootloader is unlocked.
Any ideas on what to do next before my girlfriend is going to kill me?
Click to expand...
Click to collapse
delete

For unbrick, its easy if your bootloader is unlocked.
Just need time and flash few files by adb (downgrade)and update your device's to the android version you want.
If you want I have all the necessary files.
After your device's is like at his first boot.
Sent from my SM-N9005 powered by QS-N9005-LP

GM1917 Step By Step

so i spent over 10 hours trying to figure out how to root, how to install twrp, how to install rom and it was a almost sleepless night.
So lets begin starting with unlocking the bootloader. Files need are the onetool, installed mine with the setup/update/install drivers. Next your phone settings/about phone/tap build number untill developer/settings/system/devp options/click oem unlocking/yes/advancereboot/usb debugging. Now hold down power button to see extended options and click bootloader...this is also know as fastboot. Once it boots itll show info about ur phone and start. Open the allinone tool thingy and click check and select oneplus 7 pro so that both are green/unlock bootloader and follow promot on phone and screen/then check bootloader to make sure its unlocked. It will format your phone..skip the intro and renable oem usb and advance boot and go back to the bootloader.
followed this video https://www.youtube.com/watch?v=69VE4aBQnO4
download the adb fastboot link he has, and from i had to learn insert any usb u can use and install the adb fastboot on that usb
then follow the commands 4. Now you should check which slot are you using with this command "fastboot getvar current-slot" 5. Now you should change the slot in use with this command "fastboot --set-active=*" you should replace with the slot is not in use, for example if you are using slot a the command will be "fastboot --set-active=b". (thats fastboot space dashdashsetdash, also got stuck here)
download the https://forum.xda-developers.com/oneplus-7-pro/development/25-05-romaur-v1-0-fast-stable-t3933394 img /Install this boot.img on fastboot- thanks to wzsx150 and put that iso in the usb with the fastboot installion. This is why no directy w.e found i ran into. Once the img is in there you can click the cmd promot there and itll open the fastboot then you type fastboot flash boot boot_9.5.4.img it should say connected and sent complete. hit volume down and boot to recovery with power button to see le.team twrp3.3.1-0527. click wipe/format data/ type in yes/ wipe done. click back arrow to get to main screen. click advanced/install root. The install should be success but make resure u dont reboot but click back again. click mount. Date should be selected and you should be able to plug in phone to add the rom you want to flash. then click back again to menu screen and click install. if all the way at room look for sdcard folder and there should be your rom you just transfer. in my case i used RomAur-v1.1- [28/05] - [OOS_9.0_9.5.5]-[OP7_PRO]-FAST-STABLE and it installed in 5 mins, didnt get no error 7. Then i hit reboot and let it go...rebooted 3 times and here i am on the rom after trying 10 hours
p.s all the work goes to the ppl who did this, i just had to catch on how to do it...was real painful getting closer and closer but the rom didnt want boot or some other problem that was listed in comments

Honestly this wasn't needed as there are step by step easy enough for a 4 year old to follow instructions for each topic, Root, TWRP recovery and how to recover from a soft or hard brick. This is actually harder to follow as it just looks like a massive run-on sentence. Doing a post like this every step should be separated into bullet points (just some constructive criticism)

Well I started with python script to make own booting for the. 6 update to fix verizions restricted caller. That didn't work out, then I read the magisk option and patch the img. Then fastboot was a big issue 2 of where to put the files, even following the video along it still said wrong location file not found. Then one point I had magisk full install but twrp would start loop to recovery and refused to load twrp. Then I had twrp but not magisk, and the twrp was root locked. One thing that was highlighted was that it was explained just follow the links etc. To me it was like a multiply choice test with 6 options and I got the answer for each option but not 1 option was perfectly smooth. Fastboot! OK where is the fastboot option, I see bootloader though. Small important details were left out.... Back in my day you used Odin, flash root flash twrp and done. Installed Roms via twrp and format worked and twrp always had root access

Eric214 said:
Honestly this wasn't needed as there are step by step easy enough for a 4 year old to follow instructions for each topic, Root, TWRP recovery and how to recover from a soft or hard brick. This is actually harder to follow as it just looks like a massive run-on sentence. Doing a post like this every step should be separated into bullet points (just some constructive criticism)
Click to expand...
Click to collapse
I totally agree with Eric here. Next time you do this, recommend if you are going to put up a "step by step" post, put it in bullet form. This is nearly impossible to follow. I am glad you figured it out, and I also understand the need to vent sometimes, but it doesn't read very well.