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.

[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.

Can somebody please point me in the right direction? (I've searched)

I need to root my G4 on TMO. It's on 6.0 and all I have done is enabled dev options - usb debugging- enable OEM in the menu. I've rooted devices before but it's been awhile. I obviously need to start from the beginning here, I assume by unlocking bootloader. I can't find any thread to start with as they are either outdated or for a different version of Android, or I just couldn't find one. I would really appreciate it if somebody could just link me to the thread/guide I need to be in! Thank you so much if you can!

MTN927 said:
I need to root my G4 on TMO. It's on 6.0 and all I have done is enabled dev options - usb debugging- enable OEM in the menu. I've rooted devices before but it's been awhile. I obviously need to start from the beginning here, I assume by unlocking bootloader. I can't find any thread to start with as they are either outdated or for a different version of Android, or I just couldn't find one. I would really appreciate it if somebody could just link me to the thread/guide I need to be in! Thank you so much if you can!
Click to expand...
Click to collapse
note it can only be unlock in this versions.. ill place them from oldest to newest 20i-(20p-20q-20r-20v) if you in any of the versions in parenthesis doent downgrade tp 20i... 20i is antirollback V2 all other in parenthsis is V3 you can switch bak and forth from 20p-to 20v.
well you have developers option enabled and OEM unlock
minimal adb. fastboot install it follow instructions. https://forum.xda-developers.com/showthread.php?t=2317790
download TWRP from here h811 and h815 same app for both. https://twrp.me/devices/lgg4.html
have 2 copies on in SD card other in minmal adb fastboot folder.
Bootloader OEM Unlock + Root:
Starting with the Android 6.0 20x bootloader it has to be unlocked, sorta like a Nexus, with fastboot. Previously only 'OEM Unlock' had to be toggled in Android Developer settings for TWRP or custom boot images to work.
download superSU
connect usb cable to phone.. then go to location folder of minimal adb.. ezample Crogramfiles/minimal.
then in the folder in a empty space press shift key.. and right click on mouse button . you should see open command prompt from here.. select it.
a new window should appear. enter this command
adb reboot bootloader and see screen for confirmation to acsess phone select yes.
if it doesnt boot into bootloader try command again
once booted youll see small letter on phone screen then enter command
fastboot oem unlock (this wipes ALL data!!)
it should restart phone. and optimize all apps...and bootloader should unlock
do same for twrp.... make sure command name of twrp is the same in the file example command is like this..
fastboot boot twrp-2.8.7.1-h811.img and file TWRP is say.. twrp.30.00 it wont work rename either command or files or both and name it twrp.img same in command. once it boot into twrp .. go to install then press button that says image. so the twrp.img you have in sd card appears/ select it then on next window tick recovery. swipe left to install permanently and you are done. flash new rom or superSU.
hope i make sense good luck

raptorddd said:
note it can only be unlock in this versions.. ill place them from oldest to newest 20i-(20p-20q-20r-20v) if you in any of the versions in parenthesis doent downgrade tp 20i... 20i is antirollback V2 all other in parenthsis is V3 you can switch bak and forth from 20p-to 20v.
well you have developers option enabled and OEM unlock
minimal adb. fastboot install it follow instructions. https://forum.xda-developers.com/showthread.php?t=2317790
download TWRP from here h811 and h815 same app for both. https://twrp.me/devices/lgg4.html
have 2 copies on in SD card other in minmal adb fastboot folder.
Bootloader OEM Unlock + Root:
Starting with the Android 6.0 20x bootloader it has to be unlocked, sorta like a Nexus, with fastboot. Previously only 'OEM Unlock' had to be toggled in Android Developer settings for TWRP or custom boot images to work.
download superSU
connect usb cable to phone.. then go to location folder of minimal adb.. ezample Crogramfiles/minimal.
then in the folder in a empty space press shift key.. and right click on mouse button . you should see open command prompt from here.. select it.
a new window should appear. enter this command
adb reboot bootloader and see screen for confirmation to acsess phone select yes.
if it doesnt boot into bootloader try command again
once booted youll see small letter on phone screen then enter command
fastboot oem unlock (this wipes ALL data!!)
it should restart phone. and optimize all apps...and bootloader should unlock
do same for twrp.... make sure command name of twrp is the same in the file example command is like this..
fastboot boot twrp-2.8.7.1-h811.img and file TWRP is say.. twrp.30.00 it wont work rename either command or files or both and name it twrp.img same in command. once it boot into twrp .. go to install then press button that says image. so the twrp.img you have in sd card appears/ select it then on next window tick recovery. swipe left to install permanently and you are done. flash new rom or superSU.
hope i make sense good luck
Click to expand...
Click to collapse
I'm on 20v, so I should be good.

MTN927 said:
I'm on 20v, so I should be good.
Click to expand...
Click to collapse
yes . thats latest version.. thats good.

OK, I got twrp installed but the two SU's I've flashed don't work. I have SU installed, it needs to update binaires, I try that but it fails every time. Root checkers say I'm not rooted. I think I'm using the wrong SU zip. Any help? Your guide was great btw.
EDIT: OK, now it says i am rooted but I can't get the SU binary to update. It fails every time and then asks me to reboot and try again. Any ideas?
UPDATE: Ok, the SU binary finally updated successfully! I think I'm all good! Gonna check out some custom ROMS later. Any recommendations?

Lineage
https://forum.xda-developers.com/g4/development/rom-cyanogenmod-13-0-lg-g4-t3477475

[GUIDE] Downgrading Huawei P Smart, Unlocking bootloader and installing TWRP

Downgrading Huawei P Smart, Unlocking bootloader and installing TWRP
Hello! In this tutorial i will show how you can, downgrade you phone, installing TWRP + root!
Why you need downgrade? You need to downgrade security patch to read bootloader unlock code.
Lets start!
Note: This method will cost 4euro/dollar. You need buy 4 credits to DC unlocker. Just google for it.
Note 2: Backup your important files. You need reset your phone twice.
Note 3: Im not resposible if you success to brick your phone. I can always help, if you have Discord you can contact ScaryG#8540/B] or just ask in comments
Note 4: Twrp wont work with custom roms :/
Also if something missing from tutorial, please tell down. I will fix them as soon as possible:good:
Part 1. Downgrading
You need 16 GB SD card. First format it to extFat. Then download firmware from androidhost.ru, i used FIG-LX1 8.0.0.128A(C432) Download it. ( Links below! ) Then find dload folder from zip and extract into SD card (Remember to format SD Card into extFat)
Wait until it extracts. Now put your SD Card into your phone. Call *#*#2846579#*#*, locate for software upgrade and press SDCard Upgrade button. Now your phone is installing the update. Wait until installs. After install, you should get bootloop. In this part Press Volume UP + Power button, go to recovery and do factory reset. Now wait until boots. Go to settings -> about, and you should see version (128A). Boom! You have done downgrade...
Part 2. Unlocking Bootloader
Okay. Now get DC Unlocker ready, select auto detect Huawei Phones. Now go to again call to *#*#2846579#*#* and enable manufacturer mode. Try auto detect. It should detect your phone. Now simply, press the Unlock button. You should get your bootloader code, take it up. Enable developer options on your phone, go to USB Debugging and turn it on, also turn OEM Unlocking on. Then open cmd and type cd (same path as dc unlocker folder). Type adb devices It should start ADB daemon. Check your phone, you should get ADB trust popup, Allow it! Then check again adb devices, your device should be there. Now type adb reboot bootloader After it type: fastboot oem unlock (your key) ex. fastboot oem unlock 12345678. Check your phone, and press yes. Yeet! Your bootloader is now unlocked! Type fastboot reboot to reboot! Now goes kinda easy part!
Part 3. Installing TWRP
Download TWRP for Huawei P Smart. I put links below.
Move file to same folder as DC Unlocker and rename it to recovery.img
Anyways, your phone should be resetted again...
Go again enable developer options + enabling USB Debugging. Then again confirm...
Now do again adb reboot bootloader now type fastboot flash recovery_ramdisk recovery.img Now it should be flashed. Get into TWRP by pressing Power button and Volume up. Now you can root and flash zips!
Thats it, i hope it helped :good:
Downloads:
FIRMWARE: https://androidhost.ru/3c9
( FIGO-L31 FIG-L31 FIG-LX1 8.0.0.128A(C432) FIRMWARE ANDROID 8.0.0 EMUI 8.0.0 05014XMW )
TWRP: https://forum.xda-developers.com/hu...huawei-p-smart-twrp-3-2-1-0-emui-8-0-t3786105

Please tell if any problems here?

ScaryG said:
Please tell if any problems here?
Click to expand...
Click to collapse
Hi.
I am FIG-LX1c109b138
and dc-unlocker told me not supported.
how can I have the bootloader code.
I downloaded c109b125 and c109b130
SD card dload folder and update.app reboot to volume + and -.
but it remains stuck on 5% and restarts.
can you help me.

Chisetdel31260 said:
Hi.
I am FIG-LX1c109b138
and dc-unlocker told me not supported.
how can I have the bootloader code.
I downloaded c109b125 and c109b130
SD card dload folder and update.app reboot to volume + and -.
but it remains stuck on 5% and restarts.
can you help me.
Click to expand...
Click to collapse
You need download the update, then extract all from zip. Not only update app.

ScaryG said:
You need download the update, then extract all from zip. Not only update app.
Click to expand...
Click to collapse
ok, can you share a photo of your dload folder.
to be sure of what I'm doing.thank you
also, currently on dc-unlocker I download fig-lx1c109b125a I hope he can demote it.

Chisetdel31260 said:
ok, can you share a photo of your dload folder.
to be sure of what I'm doing.thank you
also, currently on dc-unlocker I download fig-lx1c109b125a I hope he can demote it.
Click to expand...
Click to collapse
Okay. Here.
So thats whats inside dload folder.

ScaryG said:
Okay. Here.
So thats whats inside dload folder.
Click to expand...
Click to collapse
Thank you, I managed to do it with fig-lx1c109b133. And I received the bootloader code now.

Chisetdel31260 said:
Thank you, I managed to do it with fig-lx1c109b133. And I received the bootloader code now.
Click to expand...
Click to collapse
Nice to hear. Could you thank the post.
Thanks

The SD Card Upgrade fails every time for me. I have tried everything it seems :/

Once I unlock how do I upgrade to EMUI 9 without loosing the unlock

Linux Lounge said:
Once I unlock how do I upgrade to EMUI 9 without loosing the unlock
Click to expand...
Click to collapse
Hi ! Hope you saved the unlock code somewhere
If yes, you can upgrade any way you want. Just redo 'fastboot oem unlock xxxxx' after successful upgrade. (Worked for me on EMUI 9.0.1.115)
It will unlock and wipe again..
As for me, this is the point I'm stuck at :
- latest EMUI FIG-LX1 9.0.1.120 (C432)
- bootloader unlocked
- can flash twrp, allow it to prevent being overriden, then flash Magisk 19.3 without error in the log.
After that, phone boots ok but Magisk Manager says 'not installed' and TWRP must be reflashed again.
Anyone can help further ? I've read about patched boot images to be flashed with fastboot. Are they just Magisk patched or some additional security level hacking required ?
Thanks XDA

Hi.
Just FYI, afters hours, I managed to finish the procedure and restore full root/magisk under latest EMUI 9.1.0.120 (E)
I had to use magisk uninstaller under TWRP, then reflashed Magisk 19.3
Now everything sticks :
- TWRP 3.2.0_1
- Root access
- Magisk is detected as installed and running
I mainly use "systemless hosts" with Adaway and it's OK.
Did not test any other module yet.

Hi,
I bought 4 credits online for the dc unlocker, but how do i run it?
this part: "Okay. Now get DC Unlocker ready, select auto detect Huawei Phones"
How do i do that?
Sorry fo the noob question, would be great if you could clarify
cheers

boscovicz said:
Hi,
I bought 4 credits online for the dc unlocker, but how do i run it?
this part: "Okay. Now get DC Unlocker ready, select auto detect Huawei Phones"
How do i do that?
Sorry fo the noob question, would be great if you could clarify
cheers
Click to expand...
Click to collapse
https://forum.xda-developers.com/huawei-p-smart/how-to/guide-downgrade-bootloader-unlock-t3884725
im gonna be doing that in next few days

Linux Lounge said:
Once I unlock how do I upgrade to EMUI 9 without loosing the unlock
Click to expand...
Click to collapse
Just unlock bootloader with same way on emui 9.

Hey there! I've tried downgrading but i instantly get the message "Software install failed." before it even starts to install. Any ideas?

Can't downgrade from android 9.1, everytime said Software install failed

Thanks for the tutorial. I was able to install the older EMUI 8.0 version and unlock the bootloader of a FIG-LX1 (C432). Two tips:
I was able to use a uSD formatted in FAT32, I did not need to format it again using ExtFAT
When using the DC Huawei Bootloader Codes app from PlayStore to buy the credits, select Android 7 to get charged for just 4 credits, otherwise it will try to charge for a 3-day license
Make sure the phone has 8.0.0.128A or older, and DC Unlocker 2 recognizes the phone properly before buying anything (if it is not the correct version, it will tell you to use the test/probe point method)

ScaryG said:
Downgrading Huawei P Smart, Unlocking bootloader and installing TWRP
Hello! In this tutorial i will show how you can, downgrade you phone, installing TWRP + root!
Why you need downgrade? You need to downgrade security patch to read bootloader unlock code.
Lets start!
Note: This method will cost 4euro/dollar. You need buy 4 credits to DC unlocker. Just google for it.
Note 2: Backup your important files. You need reset your phone twice.
Note 3: Im not resposible if you success to brick your phone. I can always help, if you have Discord you can contact ScaryG#8540/B] or just ask in comments
Note 4: Twrp wont work with custom roms :/
Also if something missing from tutorial, please tell down. I will fix them as soon as possible:good:
Part 1. Downgrading
You need 16 GB SD card. First format it to extFat. Then download firmware from androidhost.ru, i used FIG-LX1 8.0.0.128A(C432) Download it. ( Links below! ) Then find dload folder from zip and extract into SD card (Remember to format SD Card into extFat)
Wait until it extracts. Now put your SD Card into your phone. Call *#*#2846579#*#*, locate for software upgrade and press SDCard Upgrade button. Now your phone is installing the update. Wait until installs. After install, you should get bootloop. In this part Press Volume UP + Power button, go to recovery and do factory reset. Now wait until boots. Go to settings -> about, and you should see version (128A). Boom! You have done downgrade...
Part 2. Unlocking Bootloader
Okay. Now get DC Unlocker ready, select auto detect Huawei Phones. Now go to again call to *#*#2846579#*#* and enable manufacturer mode. Try auto detect. It should detect your phone. Now simply, press the Unlock button. You should get your bootloader code, take it up. Enable developer options on your phone, go to USB Debugging and turn it on, also turn OEM Unlocking on. Then open cmd and type cd (same path as dc unlocker folder). Type adb devices It should start ADB daemon. Check your phone, you should get ADB trust popup, Allow it! Then check again adb devices, your device should be there. Now type adb reboot bootloader After it type: fastboot oem unlock (your key) ex. fastboot oem unlock 12345678. Check your phone, and press yes. Yeet! Your bootloader is now unlocked! Type fastboot reboot to reboot! Now goes kinda easy part!
Part 3. Installing TWRP
Download TWRP for Huawei P Smart. I put links below.
Move file to same folder as DC Unlocker and rename it to recovery.img
Anyways, your phone should be resetted again...
Go again enable developer options + enabling USB Debugging. Then again confirm...
Now do again adb reboot bootloader now type fastboot flash recovery_ramdisk recovery.img Now it should be flashed. Get into TWRP by pressing Power button and Volume up. Now you can root and flash zips!
Thats it, i hope it helped :good:
Downloads:
FIRMWARE: https://androidhost.ru/3c9
( FIGO-L31 FIG-L31 FIG-LX1 8.0.0.128A(C432) FIRMWARE ANDROID 8.0.0 EMUI 8.0.0 05014XMW )
TWRP: https://forum.xda-developers.com/hu...huawei-p-smart-twrp-3-2-1-0-emui-8-0-t3786105
Click to expand...
Click to collapse
I can only thank you hugely for this clear concise instruction. Well worth £3.41 to DC Unlocker developers! Finally an unlocked bootloader on my wifes phone. I'm a definite Xiaomi phone fan compared to the ridiculous hoops Huawei make people go thru with their locked down phones. Gave up with Samsung years back too for the same reason. Cheers

Hello , I have model FIG LX1 and I want to flash roms. I need to follow this guide ?
And basically I have to pay ? What the hell

[GUIDE]HOW TO INSTALL CUSTOM RECOVERY, UNLOCK BOOTLOADER & UPDATE FIRMWARE IN Dec2019

[GUIDE]HOW TO INSTALL CUSTOM RECOVERY, UNLOCK BOOTLOADER & UPDATE FIRMWARE IN Dec2019
I SOLVED THEM MYSELF, GUIDE WILL BE POST WHEN I CAN POST A THREAD
*i posted them here
INITIAL POST
Unable/failed to unlock bootloader/fastboot
It's been 8 hours and I have literally tried everything even to my own method but none of them worked (I follow all tutorial and guidance perfectly on both xda and from a article and youtube). When I click the unlock.cmd, it just flash quickly (probably open command prompt in split second) and do nothing (I had checked with a command; fastboot oem device-info). Then I tried click again and it just stopped at support all device. The folder location is on C aka main storage, I have installed all the required stuff and I'm on 6gb variant. I even wipe clean my phone and it is on Android Pie. Trying to unlock this bootloader is driving me insane. Official TWRP app does not have my variant (M1) instead they have M2 so I doubt I can use flash recovery from there. I just wanted to install TWRP and Havoc OS with Magisk and root. My phone is legit, I have warranty and all that. I just want to unlock my bootloader and able to relock it for future warranty use.
To clarify things further, I have no issues with ADB displaying on Device Manager and I can see Bootloader on Device Manager without any warning sign. I even switch the cable (both are data cable) and for some reason it only worked on usb 3.0 port. I also had tried all connection mode (PTP (no MTP), USB Tethering, File Transfer and nothing). I had make sure I had installed the driver too and my PC already have ADB but I installed them thrice anyway.
EDIT1: I just noticed my warranty had expired so I decided to officially unlock the bootloader and it was a success but I still can't use fastboot command to flash TWRP (fastboot flash recovery twrp bla bla.img) and it does run the command just failed.
EDIT2: Alright it was solved!
I had already written a guide on how to solve it but I couldn't post it.
I AM POSTING THIS HERE BECAUSE XDA SUCKS, I COULDNT POST A NEW THREAD SO HERE WE GO.
HOW TO INSTALL CUSTOM RECOVERY, UNLOCK BOOTLOADER AND INSTALL FIRMWARE IN LATE 2019
*last update 8 december 2019
#I AM NOT RESPONSIBLE FOR HARD BRICK OR SOFT BRICK OF YOUR DEVICE SO TRY AT YOUR OWN RISK AND FOLLOW WITH CAUTION
*this is based on my personal experience of my continuous effort in reading, researching, testing, tweaking all for the past few weeks
*note this is a guide specifically for these problems
-my post on how I failed to unlock bootloader
-command write failed
-phone not detected in bootloader
-adb or bootloader driver showing error on device manager
-other guides not working on amd rig
-unable to flash recovery
-phone not detected in adb
-etc
CUSTOM RECOVERY
#DO NOT INSTALL ORANGE FOX, YOU WILL GET ERROR 7 UPON FLASHING VARIOUS CUSTOM ROM
TWRP
*you can install orange fox later on by dirty flashing it (install without wiping your data)
*lastest one is 3.3.1.0
ADB & FASTBOOT
15 seconds ADB
*this is a system wide adb, there is no need for 'cd' command and you can just use straight up use adb or fastboot command and uninstall other adb along with their drivers because other adb wouldn't work and use outdated client and driver
HOW TO UNLOCK BOOTLOADER
#THIS IS AN UNOFFICIAL WAY TO UNLOCK YOUR BOOTLOADER, I HAVENT TESTED THIS MYSELF
Download this
1. Do not use your stock charger, get data cable or third party one
2. You may need to connect your cable to USB 3.0/3.1 port (blue one)
* if it didn't work, you may need to use USB Hub (even cheap one will work)
3. Open up your CMD (search cmd or use powershell if you like on windows search)
4. Type adb reboot bootloader in cmd or .\adb reboot bootloader in powershell
5. Extract the rar you downloaded
6. Go to unlock folder and double click on unlock.cmd
*if these didn't work then you can officially unlock it (if you unlock it officially, your warranty is really now voided and can't lock back bootloader)
#OFFICIAL WAY TO UNLOCK YOUR BOOTLOADER (two ways)
Method 1
1. Open your cmd or powershell
2. Type adb reboot bootloader in cmd or .\adb reboot bootloader in powershell if you haven't enter fastboot or bootloader
3. Type fastboot oem unlock in cmd or .\fastboot oem unlock in powershell
Method 2
1. Download this on your phone
2. Run it and done
##CHECK TO SEE IF IT SUCCEED OR NOT BY TYPING FASTBOOT OEM DEVICE-INFO IN CMD OR .\FASTBOOT OEM DEVICE-INFO IN POWERSHELL AND MAKE SURE THE COMMAND IS IN LOWERCASE
HOW TO INSTALL CUSTOM RECOVERY
1. Boot to bootloader by either using command or power off then hold both power button and volume up button then release power button when phone vibrate
2. Open your cmd or powershell
3. Copy your custom recovery img name with .img
*it should look like this; twrp-3.3.1-0-X00T-20190526.img
3. Type fastboot flash recovery [paste it here]
*wait 1 minute or longer
4. Boot into recovery by holding both power button and volume down button then release power button when the phone vibrate
TROUBLESHOOT
Use command fastboot fastboot devices (when in bootloader) and adb devices (when device is on systemui/not in bootloader)
A: If the device shows random alphabet or number like JADSHFE2849 then your device is detected
B: If it doesn't, try changing usb port and wires
*remember to put .\ at the front of every command when using powershell
*cmd is command prompt
HOW TO INSTALL FIRMWARE (two ways)
#WARNING THIS OFFICIAL WAY WILL REVERT YOUR CUSTOM RECOVERY INTO STOCK ONE
*doing this will wipe out your internal data
OFFICIAL WAY
1. Download latest firmware here to your sd card
*remember to set your region first by scroll down to bottom left near the language otherwise it wouldn't work or worse, may brick your device
2. Wipe clean your rom (wipe system, data, etc but not vendor)
3. Boot into system even when no OS is available
4. Complete the setup
5. Boot into recovery
6. Apply update from external storage
7. Browse to your download location and tap it
8. Wait around 10 minute - 15 minute for it to finish
9. Congrats, your firmware has been updated and you can proceed to flash custom recovery again
UNOFFICIAL WAY
Flash this on your custom recovery
*direct link if you prefer but may be outdated as time goes on {Mod edit: Link remove}

Looks like you need to use windows 7 with USB 2.0 port. Or wait till warranty runs out and unlock using official app.

What processor does your system has?
Ryzen? Goodluck with that then.
Fastboot driver doesnt work on amd ryzen builds
Same problem here...
Not even on usb 2.0 ports

gdarshan said:
What processor does your system has?
Ryzen? Goodluck with that then.
Fastboot driver doesnt work on amd ryzen builds
Same problem here...
Not even on usb 2.0 ports
Click to expand...
Click to collapse
Ah shoot, yeah I have Ryzen 3 2200g paired with GTX 1050 Ti and Windows 10 Pro.

Vysair said:
Ah shoot, yeah I have Ryzen 3 2200g paired with GTX 1050 Ti and Windows 10 Pro.
Click to expand...
Click to collapse
Ooooooo...... I have ryzen3 2200g(my new pc) and i tried to flash fastboot rom on azmpm1 but after trying almost 3hours i can't abale to flash it, before i have intel pentium and i flashed fastboot rom without a single problem
---------- Post added at 06:20 PM ---------- Previous post was at 05:56 PM ----------
Read this for quick work arround>>
https://www.reddit.com/r/Amd/commen..._source=amp&utm_medium=&utm_content=post_body

Rommaster94 said:
Ooooooo...... I have ryzen3 2200g(my new pc) and i tried to flash fastboot rom on azmpm1 but after trying almost 3hours i can't abale to flash it, before i have intel pentium and i flashed fastboot rom without a single problem
---------- Post added at 06:20 PM ---------- Previous post was at 05:56 PM ----------
Read this for quick work arround>>
https://www.reddit.com/r/Amd/commen..._source=amp&utm_medium=&utm_content=post_body
Click to expand...
Click to collapse
I still don't know how I did it but I use platform tools from google and it worked because the platform tools use the very latest adb client (around 60 or something). I do install something else like sdk tools and twrp 3310 but i had no idea why it worked which is why i havent post link for guidance. I suspect it was only because of my platform tools. (also for windows 10, i doubt you need those adb drivers bull****)
EDIT: I found a better solution, install 15 seconds adb. This is universal ADB and can be use on any directory but I recommend you to delete the drivers and older ADB beforehand.

Hi. Thank you very much for posting this, I'd been frustrated trying to install drivers but somehow I couldn't get it right. I found this and installed the 15secondADB thing, tested a few commands and everything seems to work. I'm just wondering whether I'll need to install any more drivers in order to start flashing staff through Fastboot.
Thank you in advance

Kevo0h said:
Hi. Thank you very much for posting this, I'd been frustrated trying to install drivers but somehow I couldn't get it right. I found this and installed the 15secondADB thing, tested a few commands and everything seems to work. I'm just wondering whether I'll need to install any more drivers in order to start flashing staff through Fastboot.
Thank you in advance
Click to expand...
Click to collapse
I'm glad it helped. For the driver, there's no need for it because 15 seconds ADB should have installed the required driver or update it. However, I recommend you to try do windows update check to install any missing driver just in case. (I haven't tested this myself though since there's no driver to install from there)

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