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I'm new, I dont know how to unlock bootloader on Emui 3.1, android 5.1.1

Hello everyone, I'm new in the Android world.
I have been trying to unlock my bootloader with the sticky guide, but it doesnt work for some reason.
In the cmd (after i got into the "Device locked" screen) it gives me an error and i dont know how to fix it.
I would like to see a full working 2k17 guide for how to unlock bootloader for a Huawei P7 running android 5.1.1 with Emui 3.1
Hope someone can help me.

What error do you get?
Does it appear right after entering fastboot mode?

RangerP7 said:
What error do you get?
Does it appear right after entering fastboot mode?
Click to expand...
Click to collapse
Im getting into fastboot without problem, but when i try to unlock it gives me the (Failed to write) error? Maybe its the guide that doesnt work

What guide do you use?
Did you install your driver (HiSuite)
---------- Post added at 02:00 PM ---------- Previous post was at 01:57 PM ----------
Before you are flashing try the command "fastboot devices". Is your devices listed?

RangerP7 said:
What guide do you use?
Did you install your driver (HiSuite)
---------- Post added at 02:00 PM ---------- Previous post was at 01:57 PM ----------
Before you are flashing try the command "fastboot devices". Is your devices listed?
Click to expand...
Click to collapse
I used this guide: https://forum.xda-developers.com/ascend-p7/general/rooted-p7-l10-609-t3003605
I got HiSuite installed and updated.
It is listed as "0123456789ABCDEF fastboot" ?
F:\Overførsler\ADB Flash Tools>fastboot flash boot BOOT_EMUI3.0_619_UNLOCKED.img
target reported max download size of 536870912 bytes
sending 'boot' (8038 KB)...
OKAY [ 0.309s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.309s

So you are trying to flash a KitKat boot image on a lollipop device?
But the guid works, I rooted my device the same way

CalloDK said:
I used this guide: https://forum.xda-developers.com/ascend-p7/general/rooted-p7-l10-609-t3003605
I got HiSuite installed and updated.
It is listed as "0123456789ABCDEF fastboot" ?
F:\Overførsler\ADB Flash Tools>fastboot flash boot BOOT_EMUI3.0_619_UNLOCKED.img
target reported max download size of 536870912 bytes
sending 'boot' (8038 KB)...
OKAY [ 0.309s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.309s
Click to expand...
Click to collapse
if you have emui 3.1 you can't flash a kernel for emui 3.0
a question: is your bootloader unlocked? (in fastmode under the green robot there is written in red letters phone unlocked)
EDIT: in your first post you write that the phone is locked...so you need an unlock code from huawei site in order to unlock bootloader, otherwise you will never be able to flash kernel or recovery
use this guide https://forum.xda-developers.com/ascend-p7/general/guide-root-huawei-p7-t3311424
and at point 8-9-10 use this https://forum.xda-developers.com/ascend-p7/orig-development/recovery-t3314665

usb2 said:
if you have emui 3.1 you can't flash a kernel for emui 3.0
a question: is your bootloader unlocked? (in fastmode under the green robot there is written in red letters phone unlocked)
EDIT: in your first post you write that the phone is locked...so you need an unlock code from huawei site in order to unlock bootloader, otherwise you will never be able to flash kernel or recovery
use this guide https://forum.xda-developers.com/ascend-p7/general/guide-root-huawei-p7-t3311424
and at point 8-9-10 use this https://forum.xda-developers.com/ascend-p7/orig-development/recovery-t3314665
Click to expand...
Click to collapse
I tried to install it on 2 computers, but i dont get any desktop shortcut?

What shortcut do you mean adb/fastboot?

RangerP7 said:
What shortcut do you mean adb/fastboot?
Click to expand...
Click to collapse
It says in the guide that it will create a shortcut on the desktop, otherwise i dont know how to continue

You don't need any shortcut
Just go to the path, you installed it via cmd
How did you get it work in your first post?

RangerP7 said:
You don't need any shortcut
Just go to the path, you installed it via cmd
How did you get it work in your first post?
Click to expand...
Click to collapse
I didnt set a path, it just got installed.
I used another cmd, where i was just going to open it and run it

CalloDK said:
I didnt set a path, it just got installed.
I used another cmd, where i was just going to open it and run it
Click to expand...
Click to collapse
There schoulkd be a folder calld "adb" at C:
So open cmd "cd C:/adb"

RangerP7 said:
There schoulkd be a folder calld "adb" at C:
So open cmd "cd C:/adb"
Click to expand...
Click to collapse
I got a folder called ADB Flash Tool? Can i use that?

Yes of course

RangerP7 said:
Yes of course
Click to expand...
Click to collapse
It worked and now im rooted, thanks. But I cant find the cyanogenmod which works with P7

Because there is no one for Android L.
Or look at the developer channel, there you will find another custom roms

Did anyone successfully able to solve this problem?

START (Green)
Restart bootloader (Red)
Recovery mode (Red)
Power off (White)
Press voluse key to select, and press power key to select.
FASTBOOT MODE (Red)
PRODUCT_NAME - msm8996
VARIANT - MTP UFS
BOOTLOADER VERSION -
BASEBAND VERSION -
SERIAL NUMBER - 9fbc1152
SECURE BOOT - enabled
DEVICE STATE - locked
I have used (http://www.androidbrick.com/unbrick-oneplus-one-two-3-3t-qualcomm-hs-usb-qdloader-9008/) MSMDownload Tool, this (http://www.technobuzz.net/unbrick-oneplus-3/) tool and (https://forums.oneplus.net/threads/unbrick-guide-oneplus-3t.481214/) this MSMDownloadTool, they all showed “Download Complete”. And then my boots to fastboot mode with message mentioned above.
I can not go to recovery mode which is asked in one plus download support (http://downloads.oneplus.net/oneplus-3t/oneplus_3t_oxygenos_4.1.6/)
In fastboot mode if I give any command from Command Prompt it says Not Allowed since OEM is Locked

If you can boot android you need to go into developer options (tap 7 times in the build in Settings/about). IN developer options enable the Allow OEM unlock options and then just use the fastboot command to unlock bootloader. *fastboot oem unlock*

Jahdiel2011 said:
If you can boot android you need to go into developer options (tap 7 times in the build in Settings/about). IN developer options enable the Allow OEM unlock options and then just use the fastboot command to unlock bootloader. *fastboot oem unlock*
Click to expand...
Click to collapse
Nope. I can't boot android. I am stuck at fastboot mode only with no recovery mode.

lukesh9923 said:
Nope. I can't boot android. I am stuck at fastboot mode only with no recovery mode.
Click to expand...
Click to collapse
Is the device recognized in fastboot mode?

Jahdiel2011 said:
Is the device recognized in fastboot mode?
Click to expand...
Click to collapse
Yes. (btw I have tried "fastboot oem unlock" in command prompt it say remote oem unlock not allowed.

Have you tried this unbrick tutorial?
https://forum.xda-developers.com/on...k-unbrick-tutorial-oneplus-3t-t3515306/page41

qbanlinxx said:
Have you tried this unbrick tutorial?
https://forum.xda-developers.com/on...k-unbrick-tutorial-oneplus-3t-t3515306/page41
Click to expand...
Click to collapse
Yes I did.

Have you used the unoffical OnePlus 3t toolkit?

Some details on how you ended up in this predicament might be useful to those trying to help.

OcazPrime said:
Have you used the unoffical OnePlus 3t toolkit?
Click to expand...
Click to collapse
Are you referring to MSMDownloadTool V 3.0?

Check this video https://youtu.be/jCgldi9Upes

I have uploaded a video. If someone can see and help me here https://youtu.be/jCgldi9Upes

Well since you have fastboot, why don't you try flashing stock recovery? Then you could flash a full rom zip from there if it worked. That or make sure you are using the right files for your device in the unbrick tool.
Edit: Nevermind. Your bootloader is locked so idk.
Edit2: Does your PC recognize the device as being in fastboot?
Sent from my OnePlus 3T using XDA Labs

Fastboot boot recovery "filename" (download recovery from oneplus)..
than flash latest full zip and reboot... (adb sideload "filename"
---------- Post added at 09:41 AM ---------- Previous post was at 09:38 AM ----------
http://oxygenos.oneplus.net.s3.amazonaws.com/recovery_op3t.img

MrMeeseeks said:
Well since you have fastboot, why don't you try flashing stock recovery? Then you could flash a full rom zip from there if it worked. That or make sure you are using the right files for your device in the unbrick tool.
Edit: Nevermind. Your bootloader is locked so idk.
Edit2: Does your PC recognize the device as being in fastboot?
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
Yes my laptop do recognize my phone while it is connected in fastboot mode

oTeMpLo said:
Fastboot boot recovery "filename" (download recovery from oneplus)..
than flash latest full zip and reboot... (adb sideload "filename"
---------- Post added at 09:41 AM ---------- Previous post was at 09:38 AM ----------
http://oxygenos.oneplus.net.s3.amazonaws.com/recovery_op3t.img
Click to expand...
Click to collapse
C:\adb>fastboot boot recovery recovery_op3t.img
cannot load 'recovery': No such file or directory.
C:\adb>fastboot flash recovery recovery_op3t.img
target reported max download size of 442499072 bytes
sending 'recovery' (22605 KB)...
OKAY [ 0.741s]
writing 'recovery'...
FAILED (remote: Partition flashing is not allowed)
finished. total time: 0.765s

lukesh9923 said:
Yes my laptop do recognize my phone while it is connected in fastboot mode
Click to expand...
Click to collapse
Try fastboot oem unlock
Sent from my OnePlus 3T using XDA Labs

MrMeeseeks said:
Try fastboot oem unlock
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
C:\adb>fastboot oem unlock
...
FAILED (remote: oem unlock is not allowed)
finished. total time: 0.016s
I have tried it before as well.

lukesh9923 said:
C:\adb>fastboot boot recovery recovery_op3t.img
cannot load 'recovery': No such file or directory.
C:\adb>fastboot flash recovery recovery_op3t.img
target reported max download size of 442499072 bytes
sending 'recovery' (22605 KB)...
OKAY [ 0.741s]
writing 'recovery'...
FAILED (remote: Partition flashing is not allowed)
finished. total time: 0.765s
Click to expand...
Click to collapse
Ups
Fastboot boot recovery_op3t.img
Sent from my ONEPLUS A3003 using Tapatalk

oTeMpLo said:
Ups
Fastboot boot recovery_op3t.img
Sent from my ONEPLUS A3003 using Tapatalk
Click to expand...
Click to collapse
C:\adb>Fastboot boot recovery_op3t.img
downloading 'boot.img'...
OKAY [ 0.727s]
booting...
FAILED (remote: unlock device to use this command)
finished. total time: 0.759s

Unbrick

Hi everyone,
i've the phone can only go into eRecovey and fastboot. I think that the corrupted file is oeminfo.bin, bacause i was replaced with file explorer to have the exact version of the firmware.
Recovery i've tried to download by wifi the firmware, but when install return with authentication info failed error red exclamation dot. I've tried with full wipe but after reboot it return into eRecovery.
Into fastboot return with FAILED (remote: Command not allowed).
Bootloader after update was began locked and i cannot unlock, so TWRP is cutted out.
There's some method to flash the .img system etc like odin for samsung?
i've also the old version of oeminfo.bin on my PC, if i have a method to flash it trough ADB, but i don't know how to unbrick.
Thanks

frencisis said:
Hi everyone,
i've the phone can only go into eRecovey and fastboot. I think that the corrupted file is oeminfo.bin, bacause i was replaced with file explorer to have the exact version of the firmware.
Recovery i've tried to download by wifi the firmware, but when install return with authentication info failed error red exclamation dot. I've tried with full wipe but after reboot it return into eRecovery.
Into fastboot return with FAILED (remote: Command not allowed).
Bootloader after update was began locked and i cannot unlock, so TWRP is cutted out.
There's some method to flash the .img system etc like odin for samsung?
i've also the old version of oeminfo.bin on my PC, if i have a method to flash it trough ADB, but i don't know how to unbrick.
Thanks
Click to expand...
Click to collapse
Run these commands in fastboot and report back
fastboot oem get-product-model
fastboot getvar vendorcountry

danifilth4king said:
Run these commands in fastboot and report back
fastboot oem get-product-model
fastboot getvar vendorcountry
Click to expand...
Click to collapse
Thanks, the resuls are:
C:\adb>fastboot devices
LCL0218428003429 fastboot
C:\adb>fastboot oem get-product-model
...
FAILED (remote: FAIL)
finished. total time: 0.006s
C:\adb>fastboot getvar vendorcountry
getvar:vendorcountry FAILED (remote: cannot get vendorcountry in oeminfo)
finished. total time: 0.011s
C:\adb>

frencisis said:
Thanks, the resuls are:
C:\adb>fastboot devices
LCL0218428003429 fastboot
C:\adb>fastboot oem get-product-model
...
FAILED (remote: FAIL)
finished. total time: 0.006s
C:\adb>fastboot getvar vendorcountry
getvar:vendorcountry FAILED (remote: cannot get vendorcountry in oeminfo)
finished. total time: 0.011s
C:\adb>
Click to expand...
Click to collapse
As your normal eRecovery method isn't working you could try using the FunkyHuawei eRecovery method to flash firmware but you'd have to pay for credits and there's no guarantee it would work. Problem is knowing which firmware to choose as we don't know if your rebrand was successful.
You could try a firmware that matches what your model and region of your phone was originally and if that doesn't work try the firmware meant for the model/region you were trying to rebrand to?
Other than that I'm out of ideas if you can't unlock your bootloader :/

danifilth4king said:
As your normal eRecovery method isn't working you could try using the FunkyHuawei eRecovery method to flash firmware but you'd have to pay for credits and there's no guarantee it would work. Problem is knowing which firmware to choose as we don't know if your rebrand was successful.
You could try a firmware that matches what your model and region of your phone was originally and if that doesn't work try the firmware meant for the model/region you were trying to rebrand to?
Other than that I'm out of ideas if you can't unlock your bootloader :/
Click to expand...
Click to collapse
I've tried to contact Funky Huawei, but they answered to me that: "Unfortunately in your situation recovery might not be possible".
So the last one is to try with warranty into Huawei service.
I hope they could repair it with less money as possible. Maybe they will replace the main board or just re flash he firmware with special method?:crying:

not possible to flash firmware in downloade mode?

mrt box

elvis87 said:
mrt box
Click to expand...
Click to collapse
Have you seriously just answered a 2 years old thread?..

Dude, I have the same problem with a P20 Pro since january!

Usb-c pendrive with proper firmware did the trick for me last time. Nothing else worked. Erecovery is useless crap.

deucecorp said:
Usb-c pendrive with proper firmware did the trick for me last time. Nothing else worked. Erecovery is useless crap.
Click to expand...
Click to collapse
Can I pm you for details?

Hot to unbrick MiA2

Hi Friends.
I have MiA2 unlocked and bricked.
It starts only in twrp and fastboot mode
Can anyone help me to unbrick?
Thanks

https://forum.xda-developers.com/showpost.php?p=77302899&postcount=4

Writing devcfg_a failed
Flashing is not allowed forum critical partition

b1gb1ng said:
Writing devcfg_a failed
Flashing is not allowed forum critical partition
Click to expand...
Click to collapse
fastboot flashing unlock_critical

b1gb1ng said:
Hi Friends.
I have MiA2 unlocked and bricked.
It starts only in twrp and fastboot mode
Can anyone help me to unbrick?
Thanks
Click to expand...
Click to collapse
https://en.miui.com/thread-3052407-1-1.html

Daha3ker said:
fastboot flashing unlock_critical
Click to expand...
Click to collapse
when I launch this command it is not recognised, I just have a list of commands in fastboot
what should I do?

fastboot -w
Be warned, it will wipe your device.

Sift said:
fastboot -w
Be warned, it will wipe your device.
Click to expand...
Click to collapse
I still have the same problem command "fastboot flashing unlock_critical" is not recognised and if I try to flash any img I receive the error message "Flashing is not allowed for critical partitions"

Grooverit said:
I still have the same problem command "fastboot flashing unlock_critical" is not recognised and if I try to flash any img I receive the error message "Flashing is not allowed for critical partitions"
Click to expand...
Click to collapse
You need to download newest adb.
https://dl.google.com/android/repository/platform-tools-latest-windows.zip

minnuss said:
You need to download newest adb.
https://dl.google.com/android/repository/platform-tools-latest-windows.zip
Click to expand...
Click to collapse
well, I updated the newest adb, now the command seems to work, but after "fastboot flashing unlock_critical" I still have this:
PS C:\android-sdk\platform-tools> fastboot flashing unlock_critical
OKAY [ 0.034s]
Finished. Total time: 0.035s
PS C:\android-sdk\platform-tools> fastboot oem device-info
(bootloader) Verity mode: true
(bootloader) Device unlocked: true
(bootloader) Device critical unlocked: false
(bootloader) Charger screen enabled: false
OKAY [ 0.007s]
Finished. Total time: 0.008s
no unlock why?
---------- Post added at 03:26 PM ---------- Previous post was at 02:55 PM ----------
it was my erorr, sorry
thanks for the advice, I unlocked and than flashed stock rom after booting in edl mode
I still have to check if I still have bootloader unlocked as I get advise on start screen

Grooverit said:
I still have to check if I still have bootloader unlocked as I get advise on start screen
Click to expand...
Click to collapse
Yes it is still all unlocked.
And if you wish to thanks someone on this forum, use the thanks button in the down right corner of the post that helped you. :good:

You should visit Xiaomi service centre. They will unbrick your phone without any charge.

Re-lock bootloader

Hi guys!
I try to relock my xt1925-1 but cmd says "(bootloader) Still require signed boot.img" and when i try to flash boot,img I get an error that say :
fastboot flash boot boot.img
target reported max download size of 534773760 bytes
sending 'boot' (22528 KB)...
OKAY [ 0.712s]
writing 'boot'...
(bootloader) Security version downgrade
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.977s
i dont know how proceed :c
please help me, my phone has pie update but I flash revenge OS but i prefer the stock system

Dagx19 said:
Hi guys!
I try to relock my xt1925-1 but cmd says "(bootloader) Still require signed boot.img" and when i try to flash boot,img I get an error that say :
fastboot flash boot boot.img
target reported max download size of 534773760 bytes
sending 'boot' (22528 KB)...
OKAY [ 0.712s]
writing 'boot'...
(bootloader) Security version downgrade
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.977s
i dont know how proceed :c
please help me, my phone has pie update but I flash revenge OS but i prefer the stock system
Click to expand...
Click to collapse
Boot phone in fastboot mode, type fastboot flashing lock or fastboot oem lock. Make sure in developer options you have switched the OEM unlock back to lock.

Baronstragen said:
Boot phone in fastboot mode, type fastboot flashing lock or fastboot oem lock. Make sure in developer options you have switched the OEM unlock back to lock.
Click to expand...
Click to collapse
I can't switch the option because it's say "bootloader is already unlocked" and I can't change this

Dagx19 said:
I can't switch the option because it's say "bootloader is already unlocked" and I can't change this
Click to expand...
Click to collapse
You don't need to deactivate the OEM unlocking option. There is no reason to do it.
---------- Post added at 09:19 PM ---------- Previous post was at 08:55 PM ----------
Lock bootloader
You can't relock the bootloader without the stock firmware!!
1.) Download and flash the latest version of your stock rom:
https://mirrors.lolinet.com/firmware/moto/ali/official/
2.) Let your phone boot until the "Welcome" screen appears and boot into fastboot mode.
3.) Run "fastboot oem lock"
=> re-run the command to continue
4.) "Flash valid Android images now. Then re-run this command to lock" => run "fastboot oem lock"
You already flashed the images in step 1.)
5.) Now the bootloader asks for a signed boot.img. Flash the boot.img again and run "fastboot oem lock"
6.) Now the bootloader asks for a signed system.img and/or oem.img
Flash again system, oem and vendor.img (At this step I flashed also the vendor.img when I relocked my phone)
7.) Run a last time "fastboot oem lock" and your bootloader is relocked with status "oem locked".

WoKoschekk said:
You don't need to deactivate the OEM unlocking option. There is no reason to do it.
---------- Post added at 09:19 PM ---------- Previous post was at 08:55 PM ----------
Lock bootloader
You can't relock the bootloader without the stock firmware!!
1.) Download and flash the latest version of your stock rom:
https://mirrors.lolinet.com/firmware/moto/ali/official/
2.) Let your phone boot until the "Welcome" screen appears and boot into fastboot mode.
3.) Run "fastboot oem lock"
=> re-run the command to continue
4.) "Flash valid Android images now. Then re-run this command to lock" => run "fastboot oem lock"
You already flashed the images in step 1.)
5.) Now the bootloader asks for a signed boot.img. Flash the boot.img again and run "fastboot oem lock"
6.) Now the bootloader asks for a signed system.img and/or oem.img
Flash again system, oem and vendor.img (At this step I flashed also the vendor.img when I relocked my phone)
7.) Run a last time "fastboot oem lock" and your bootloader is relocked with status "oem locked".
Click to expand...
Click to collapse
Thank you! In my case i just needed to flash boot.img once and it rebooted without a warning! Again, THANK YOU