Blocked bootloader - Huawei P9 Lite Questions & Answers

Hello. I have a VNS-L21 and when i tried to install a different Android version, it changed from C432 to C900. Now I have VNS-L21C900B160, and my bootloader is unlocked, but won't receive commands from fastboot, saying that the command has failed. The only command that works is "fastboot reboot". Can someone help me get that working? I would like to install TWRP and get back to the C432 region. Can anyone help me? Every idea is highly appreciated. Thanks in advance

get your oem unlock code again and type in fastboot : fastboot oem unlock yourcode ( replace yourcode with oem unlock code )

hexxr said:
get your oem unlock code again and type in fastboot : fastboot oem unlock yourcode ( replace yourcode with oem unlock code )
Click to expand...
Click to collapse
I tried this twice, second time after a wipe, but didn't work either way
Also, it says that it is unlocked, FRP unlocked, but at booting time, the yellow warning screen does not appear. So I don't know...

Related

[SOLVED] P9 Lite (L31) bricked? Please help...

Hi,
I think my P9 Lite is bricked (L31) :crying:
It happened because I've tried to downgrade from Android N EMUI 5 beta to Android M (EMUI 4.1.1) with the dload folder method. I've extracted and put update.app of my B151 firmware inside then 3 buttons and update said successful, but now bootloop and I can't enter recovery or fastboot (vol down + pwr).... I'm stuck in eRecovery and Wifi check for update fails....
>>> EDIT: Okay, good, I can enter fastboot but it says:
"Please connect usb cable, blah blah" (My phone is connected)
Android boot reason
AP_S_COLDBOOT
NA
Volume_down_press_process_func
PHONE locked
FRP Unlock
----
Do I have to unlock the bootloader? If yes, how can I do since I can't boot on Android?
Can I unlock it with fastboot commands or other ways? How?
----
Currently, with fastboot commands, I can't flash system.img or recovery.img. For instance, trying to flash system.img or recovery.img, it says:
C:\Users\Supergren>fastboot flash system "d:/system.img"
target reported max download size of 471859200 bytes
sending sparse 'system' (451070 KB)...
OKAY [ 19.381s]
writing 'system'...
FAILED (remote: Command not allowed)
finished. total time: 19.395s
I guess it's because my bootloader is locked...
I'm a bit lost
>>> EDIT 2: to solve the bootloop after downgrading from N beta to M (b151), I just had to:
1- Shutdown my phone
2- Plug to my computer. That's what I forgot previously to be able to start fastboot mode!
3- Press Volume down + PWR
4- Once in fastboot/rescue mode, open cmd window on my PC and type:
fastboot oem unlock <unlock code> . (For instance: fastboot oem unlock 1234567890123456)
5- Follow unlock procedure instructions and then the phone does a factory reset.
6- The phone reboots and it's done
Wood Man said:
Hi,
I think my P9 Lite is bricked (L31) :crying:
I can enter fastboot but it says:
"Please connect usb cable, blah blah" (My phone is connected)
Android boot reason
AP_S_COLDBOOT
NA
Volume_down_press_process_func
PHONE locked
FRP Unlock
----
Do I have to unlock the bootloader? If yes, how can I do since I can't boot on Android?
Can I unlock it with fastboot commands or other ways? How?
----
Currently, with fastboot commands, I can't flash system.img or recovery.img. For instance, trying to flash system.img or recovery.img, it says;
...
FAILED (remote: Command not allowed)
...
I guess it's because my bootloader is locked...
I'm a bit lost
Click to expand...
Click to collapse
Maybe unlocking the bootloader may help. On fastboot you type fastboot oem unlock
Wood Man said:
Hi,
I think my P9 Lite is bricked (L31) :crying:
I can enter fastboot but it says:
"Please connect usb cable, blah blah" (My phone is connected)
Android boot reason
AP_S_COLDBOOT
NA
Volume_down_press_process_func
PHONE locked
FRP Unlock
----
Do I have to unlock the bootloader? If yes, how can I do since I can't boot on Android?
Can I unlock it with fastboot commands or other ways? How?
----
Currently, with fastboot commands, I can't flash system.img or recovery.img. For instance, trying to flash system.img or recovery.img, it says;
...
FAILED (remote: Command not allowed)
...
I guess it's because my bootloader is locked...
I'm a bit lost
Click to expand...
Click to collapse
To unlock bootloader type ,,fastboot oem unlock.......,,(.....is your unlock code)
To unlock the bootloadee you have to type :
fastboot oem unlock 1234567891234
Sent from my HUAWEI VNS-L31 using XDA Labs
You are all gods! It's solved!
Thanks a lot guys! I really appreciate your fast answers :good:
I've read on the web about the "fastboot oem unlock" method but I didn't know if it worked with P9 Lite. I was afraid to totally brick the phone.
See you later!
Edit: I've updated the thread title with [SOLVED] and wrote what I did to achieve this.
Hey ! You got the same problem as me, excuse me how did you get the unlock code if you couldn't boot the phone... I read and read and your problem was the same i have ... but when i got to fastboot i can't unlock, i dont have the unlock code sh**. Thank you and sorry for my english everybody i hope your eyes didn't hurt hehe
EDIT: I just got the unlock code but I think i'm screwed up... When in fastboot&rescue mode it says FRP Lock... sh**
1francis said:
Hey ! You got the same problem as me, excuse me how did you get the unlock code if you couldn't boot the phone... I read and read and your problem was the same i have ... but when i got to fastboot i can't unlock, i dont have the unlock code sh**. Thank you and sorry for my english everybody i hope your eyes didn't hurt hehe
EDIT: I just got the unlock code but I think i'm screwed up... When in fastboot&rescue mode it says FRP Lock... sh**
Click to expand...
Click to collapse
Frp lock means Factory Reset Protection. If it says Phone UNLOCKED means ur bootloader is unlocked.
1francis said:
Hey ! You got the same problem as me, excuse me how did you get the unlock code if you couldn't boot the phone... I read and read and your problem was the same i have ... but when i got to fastboot i can't unlock, i dont have the unlock code sh**. Thank you and sorry for my english everybody i hope your eyes didn't hurt hehe
EDIT: I just got the unlock code but I think i'm screwed up... When in fastboot&rescue mode it says FRP Lock... sh**
Click to expand...
Click to collapse
go to developer option and activate oem unlocking
this will unlock frp
Right. The issue is that phone is stuck on huawei logo
1francis said:
Right. The issue is that phone is stuck on huawei logo
Click to expand...
Click to collapse
Buy DC phoenix 15euros and flash it same happen to me last day

OEM unlock toggle is not working

Hi.
I´ve unlocked the bootloader on my P10 plus.
But now, the toggle to unlock OEM on the developer settings is greyed and I can´t perform any fastboot commands.
Any help?
Thanks
I believe the option becomes disabled when you've unlocked the bootloader, as you'd have to use the relock command instead of the toggle to relock it.
I assume you're familiar with accessing and using fastboot if you've unlocked your bootloader... so for the fastboot commands, does the device show up when plugged in and you run "fastboot devices"?
singularoctopi said:
I believe the option becomes disabled when you've unlocked the bootloader, as you'd have to use the relock command instead of the toggle to relock it.
I assume you're familiar with accessing and using fastboot if you've unlocked your bootloader... so for the fastboot commands, does the device show up when plugged in and you run "fastboot devices"?
Click to expand...
Click to collapse
me to
i try to relock my oem using this command fastboot oem relock (16 unlock code)
after that my p10 plus is restart then i show only are
HUAWEI ERECOVEY
(DOWNLOAD LATEST VERSION AND RECOVER)
(REBOOT)
(SHUTDOWN)
i already try the download but always failed,
and i try the adb by vol down+usb then i see this in FASBOOT&RESCUE MODE
PHONE RELOCKED
FRP LOCK
but i type fastboot devices its connected i show my product code? i dont know what thats code
then i try install twrp always failed
i dont know what happen . i cannot open my p10 plus now always in
“HUAWEI ERECOVEY”
the same is happening to me
Eyezcripz said:
me to
i try to relock my oem using this command fastboot oem relock (16 unlock code)
after that my p10 plus is restart then i show only are
HUAWEI ERECOVEY
(DOWNLOAD LATEST VERSION AND RECOVER)
(REBOOT)
(SHUTDOWN)
i already try the download but always failed,
and i try the adb by vol down+usb then i see this in FASBOOT&RESCUE MODE
PHONE RELOCKED
FRP LOCK
but i type fastboot devices its connected i show my product code? i dont know what thats code
then i try install twrp always failed
i dont know what happen . i cannot open my p10 plus now always in
“HUAWEI ERECOVEY”
Click to expand...
Click to collapse
i have my huawei p10 plus doing the same thing of yours.....only erecovery mode and when i get to boot in fastboot mode is only fatboot mode & rescue and i had locked bootloader and frp lock.....but i was reading that huawei just block the page to unlock bootloader i just dont know why they did that /......
Maybe try re-unlocking and flashing stock rom, kernel, system, and boot. (Or you can try the method I used to update manually). Requires to be able to acces external sd card.
Hmu if you want to know how.

FRP unlock

Is there any way to unlock frp from the fastboot if the bootloader is unlocked and the device is bricked.
Already tried : fastboot oem relock xxxxx
Returns : command not allowed
I am on stock recovery and the device is bricked right now.
Help needed!Many thanks!
http://www.androidash.com/6-easy-steps-to-unbrick-huawei-honor-v9/
you can try this, I dont know how usefull it can be
I don't think there will be FRP because the V9 doesn't come with all the Google stuff. Unless, they were added afterwards by installing them all manually.

Help unable to relock the bootloader

I am trying to relock the bootloader in adb terminal by using command fastboot oem lock I get a message during boot stating that the system has been destroyed and boot loop.
How to relock bootloader with out flashing stock rom
Thanks in advance ?
Vishal21896 said:
I am trying to relock the bootloader in adb terminal by using command fastboot oem lock I get a message during boot stating that the system has been destroyed and boot loop.
How to relock bootloader with out flashing stock rom
Thanks in advance
Click to expand...
Click to collapse
use reflash tutorial from this site:
HTML:
https://xiaomifirmware.com/roms/download-official-roms-xiaomi-mi-a1/
. Just download tool, extract, then exctract downloaded rom in this tool folder. Conect A1 in fastboot and start flash_all_lock.bat file in folder with room (I used flash_all.bat). This is how I fixed my bootlops...
You need to reflash. There's no other way.
Did you have the original stock Oreo with January security patch?
I would also like to re-lock the bootloader but now I have read your post I am unsure if its safe.
Use this command in adb
fastboot oem relock (your unlock code if needed)
Youssef Reda said:
Use this command in adb
fastboot oem relock (your unlock code if needed)
Click to expand...
Click to collapse
If I enter fastboot oem relock with MagiskManager or Magisk 15.3 installed, will I brick the phone?
amzazine said:
If I enter fastboot oem relock with MagiskManager or Magisk 15.3 installed, will I brick the phone?
Click to expand...
Click to collapse
Maybe
I didn't try it but it may brick your phone
Developers should make clear that Re-locking the bootloader is not as easy as the unlock process and there is a high risk you will brick your phone.
i just have this issue ,which is i unlock then i lock the oem and then the message ' system has been destroyed ' and when i try to unlock back the message 'error: oem unlock is not allowed' so i really need your help ..how can i fix my phone ...plsss send a respond quickly

bootloader not getting unlocked

i am on pie 073 firmware... i want to unlock my bootloader ... all the drivers are installed even my phone is detected both in adb and fastboot mode... but when i run the unlock both normally or running uts as administrator it doesnt work... nor the application of unlockimg boot loader works on my phone
Did you try manually typing the unlock command?
Code:
fastboot oem unlock
I've tried this , but it says
Comman failed
No error...
I also has the same problem
KVCmoto said:
Did you try manually typing the unlock command?
Code:
fastboot oem unlock
Click to expand...
Click to collapse
You need to download the Asus Unlock Tool.
If you still have issues, go to their forum ZenTalk and they can help you. They are very fast.

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