Unlocking bootloader second time - Huawei P9 Questions & Answers

I unlocked my bootlaoder officially when i was using Marshmallow and bootloader got locked again after flashing factory image of nougat . Can we use same key obtained from Huawei previously to unlock bootlaoder again ?

managed to unlock bootloader with same code

Rajaasim1980 said:
I unlocked my bootlaoder officially when i was using Marshmallow and bootloader got locked again after flashing factory image of nougat . Can we use same key obtained from Huawei previously to unlock bootlaoder again ?
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Unlocking bootloader always has the same code and the same instruction to do this. Your phone stays the same, software hasn't got anything to this.

Related

Sony z1 bootloader unlock problem

HI, I UNLOCKED MY SONY Z1 BOOTLOADER WITHOUT BACKUP TA PARTITION AND THEN I RELOCKED IT, NOW I WANT TO UNLOCK BOOTLOADER AGAIN BUT I CAN'T UNLOCK IT,COMMAND SAYS-ERROR THIS DEVICE IS ALREADY UNLOCKED,
BOOTLOADER UNLOCK ALLOWED :YES
I TAKE UNLOCK CODE OEM UNLOCK 0x my code in flashtool,everything is correct but l can't unlock bootloader :crying:
I USED ADB COMMAND AND FLASHTOOL, BUT I CAN'T UNLOCK BOOTLOADER
PLEASE HELP ME I UNLOCK BOOTLOADER AGAIN
baku_boy_97 said:
HI, I UNLOCKED MY SONY Z1 BOOTLOADER WITHOUT BACKUP TA PARTITION AND THEN I RELOCKED IT, NOW I WANT TO UNLOCK BOOTLOADER AGAIN BUT I CAN'T UNLOCK IT,COMMAND SAYS-ERROR THIS DEVICE IS ALREADY UNLOCKED,
BOOTLOADER UNLOCKED :YES
I TAKE UNLOCK CODE OEM UNLOCK 0x my code in flashtool,everything is correct but l can't unlock bootloader :crying:
I USED ADB COMMAND AND FLASHTOOL, BUT I CAN'T UNLOCK BOOTLOADER
PLEASE HELP ME I UNLOCK BOOTLOADER AGAIN
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Click to collapse
The answer is in your post. Your bootloader is unlocked, you never relocked it. Put your phone in fastboot and you will see a violet led...
Yeah it seems your bootloader is still unlocked.
No my phone bootloader not unlocked now, and when l connect my phone in FASTBOOT mode the flash is blue
And also l cannot install cm12.1 because bootloader is not unlocked
Sorry, my English is not good
What is problem??? :crying:
optimumpro said:
The answer is in your post. Your bootloader is unlocked, you never relocked it. Put your phone in fastboot and you will see a violet led...
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Click to collapse
Sorry, BOOTLOADER UNLOCK ALLOWED :Yes
I wrote wrong
Help me please
I can't unlock bootloader again
What is problem???

Get unlock code on already unlocked (and rooted) device

Hi,
I have a VIE-AL10, firmware B183. I am trying to update to B195 but I believe I cannot do it because I unlocked the phone.
I don't need the unlocked bootloader anymore (for now) and my idea was to relock it and unlock it again in the future but unfortunely I have lost the code I got using DCUnlocker.
There is a way to recover the code in this unlocked and rooted phone?
Blindstealer said:
Hi,
I have a VIE-AL10, firmware B183. I am trying to update to B195 but I believe I cannot do it because I unlocked the phone.
I don't need the unlocked bootloader anymore (for now) and my idea was to relock it and unlock it again in the future but unfortunely I have lost the code I got using DCUnlocker.
There is a way to recover the code in this unlocked and rooted phone?
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Click to collapse
U can update with unlocked bootloader but not if u have TWRP and root. If u have it i need to unroot and install stock recovery.
Mostar088 said:
U can update with unlocked bootloader but not if u have TWRP and root. If u have it i need to unroot and install stock recovery.
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Click to collapse
Thank you, I imagined that. Any way to recover the unlock code so that I can redo the unlock procedure after I upgraded the phone?

Relock bootloader on nougat

Hey guys I want to relock my bootloader on nougat
How can I do that??
anyone knows how to lock the BL on Nougat? I accidentally updated my unlocked BL device from marshmallow to 7.0. but the BL is still unlocked, and now I want to relock it.
cheeze.keyk said:
anyone knows how to lock the BL on Nougat? I accidentally updated my unlocked BL device from marshmallow to 7.0. but the BL is still unlocked, and now I want to relock it.
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Click to collapse
Use SRK tools....
rayman95 said:
Use SRK tools....
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Click to collapse
I tried using it but it give me errors. does it support relocking of BL on Nougat?
cheeze.keyk said:
I tried using it but it give me errors. does it support relocking of BL on Nougat?
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Click to collapse
Don't know??? Never try to relock it...so you have to flash stock rom and your BL will be automatically locked...
cheeze.keyk said:
I tried using it but it give me errors. does it support relocking of BL on Nougat?
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As far as I know if you are running a custom boot image you won't be able to relock the bootloader on nougat. It's a feature to prevent you soft-bricking your phone, because if you lock it and it detects unauthorised firmware it will refuse to boot.
To relock nougat, simply use the dload method to get a completely stock device and you will see that the bootloader is now relocked.
Hi everyone !
I really need help. i bought Huawei P9 with brand T-Mobile on Android 7.0 Nougat Version: EVA-L09C150B376. I haven`t and can`t found ROM file: EVA-L09C150B376 to flash it and have again LOCK BOOTLOADER. What should I do now to have LOCKED BOOTLOADER? THANKS !

Bootloader Issue | FRP Lock | Root Guide

UPDATED:
Issue has been solved
( i buy 4 credits from dc unlocker and use HCU to read my boot loader code )
yes i know this is all from dc unlockcer yes they , unbrick my P9 but they also
changed the boot code when you flashed the rom via DC phoenix
im suspecting it that way .
Hello guys. Debranded P9 here
Nougat C432B386 Eva-L09
hw eu :country vendor
Bootloader unlocked and FRP lock
my device gets suffer from a hard brick
and recovered by DC Phoenix. In order to
have a Stable Nougat Firmware i decide to
debrand my phone ......
1st attempt : flashing the (.dgkmts AL10 chinese rom)
after flashing the chinese Al10 firmware
from DCUnlocker (.dgkmts) the device boot and
can be flashed into original stock rom
but the first attempt fails because my
vendor comes from a different build
2nd attempt: flashing the (.dgkmts AL10 chinese rom)
but this time, i decide to wipe NVME and OEM
after booting into system and checking my device
details my IMEI stays the same but Serial No is missing
so i had to use HCU to write my IMEI and Serial No.
and obtain a new vendor from hw eu
after booting system, I start to forced update the
EVA-L09C432B136
then i unlocked my bootloader at this stage
using the same bootloader code from Huawei
FIRMWARE:EVA-L09 C432B136
( please focus on this, i already unlocked the bootloader​
here , and allow the oem to unlock )
status : bootloader unlock
frp unlock
the process is successfully done and after that
i check my device details and perfectly debrand
my P9, after a minute it received an OTA update
from Huawei System Updater ( C432B186 )
I update into it and reboot and received another update
again C432B322 ( Nougat-beta version) and then
received the Final Build C432B386
SUMMARY STAGES:
bricked and wiped oem info / SN rewrite using HCU
1. AL10 Chinese rom >
2. C432B136 ( stock firmware)
( do unlocked bootloader )
3. OTA C432B186
4. OTA C432B322 ( Nougat beta )
5. OTA C432B386 ( Nougat Stable)
status : bootloader unlock
frp lock
I'm into that version C432B386
and now im having a trouble here
flashing the original bootloader code
command : fastboot oem unlock xxx-xxxx-xxx
it says : wrong password
failed to write the command
" is it possible to obtain a new bootloader code ?"
i don't know why the boot code changed even though
i use it in unlocking my Bootloader and it succeed
2nd scenario:
when i try to go to developer options and
go to Allow oem unlock
so that i can be able to obtain FRP unlock
but it is greyed out.
" i've read that if you're on Nougat and you are already
in unlocked bootlader, you will have this issue "
the possible way of unlocking FRP is relocked the
bootloader first and the OEM UNLOCK option will
come out.
i guess the solution is finding a new Bootloader code
but "how?" does anyone knows this?
3rd scenario: flashing new recovery
( expecting to have administrative rights )
i try to flash also the twrp nougat version
but it says verification error
command : fastboot flash recovery twrp3.1.0-3-eva.img
failed
i don't want to end up bricking my device again
I'm having a hard time to resurrect this and I don't
want to happen it again, I'm busy with my work so
i have to asked you guys, finding a best way how
to fixed this..
if someone is having a same situation like me
please participate on the thread and or someone who
already fixed this kind of issue please give us information . thank you !
oem info / SN rewrite using HCU
You rewrited the serial number? Yeah I don't know how to help you there...
benjamen50 said:
oem info / SN rewrite using HCU
You rewrited the serial number? Yeah I don't know how to help you there...
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Click to collapse
yes sir , there is HCU Client tool that can re-write Serial Number/IMEI / read bootcode
i use it and replaced the missing Serial Number of my device
vinfrix said:
yes sir , there is HCU Client tool that can re-write Serial Number/IMEI / read bootcode
i use it and replaced the missing Serial Number of my device
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Imo, If you change serial.no then your unlock code would be different
Try relocking and again unlocking the bootloader.
_Frostplexx_ said:
Try relocking and again unlocking the bootloader.
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i tried to but the code seems already changed.
FiKsTyLeR said:
Imo, If you change serial.no then your unlock code would be different
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even if i write the same serial code ?
vinfrix said:
i tried to but the code seems already changed.
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Click to collapse
Dude i am in a similar situation.
I have the bootloader unlocked but frp is locked.
When you relocked and unlocked was the OEM unlock option changeable (not grayed out, no FRP LOCK) again?
revery0 said:
Dude i am in a similar situation.
I have the bootloader unlocked but frp is locked.
When you relocked and unlocked was the OEM unlock option changeable (not grayed out, no FRP LOCK) again?
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Click to collapse
yes if you unlock again it will come out
vinfrix said:
yes if you unlock again it will come out
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Click to collapse
As it turns out, you need to rollback to b182 and then upgrade to N through OTA.
dload b300
dload b182
OTA b386
OEM Unlock, ADB Debugging, USB Debugging
Unlock bootloader
twrp
revery0 said:
As it turns out, you need to rollback to b182 and then upgrade to N through OTA.
dload b300
dload b182
OTA b386
OEM Unlock, ADB Debugging, USB Debugging
Unlock bootloader
twrp
Click to expand...
Click to collapse
why should i rollback ?

Is it possible to recover my bootloader unlock key? (Nokia 8)

Hey! So I have unlocked my bootloader long time ago using the official method and I forgot to unlock critical... I still have the email with bootloader unlock key from HMD but when I press on download it shows me this: (see in the pictures)... I really need to unlock critical because I need to use NOST to flash stock firmware... HELP!
Mihai_xD2 said:
Hey! So I have unlocked my bootloader long time ago using the official method and I forgot to unlock critical... I still have the email with bootloader unlock key from HMD but when I press on download it shows me this: (see in the pictures)... I really need to unlock critical because I need to use NOST to flash stock firmware... HELP!
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Click to collapse
I suppose that unblocked bootloader is not a prerequisite for flashing official firmwares. It is safe on locked bootloader.
There is a Q&A section for asking questions. Let's abide by the rules dear.

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