Database Develop

Can't unlock bootloader

Recently I tried to debrand my P9 (EVA-AL10) with SRK-Tools, but something went wrong and my phone booted into E-Recovery. I tried to restore the phone via E-Recovery but during the download it gave an error and it won't let me download the firmware. So I downloaded the EVA-AL09 firmware from the internet and flashed it via dload. Everything went fine but when I tried to unlock the bootloader with dc-unlocker it only sayd unknown response. I tried to unlock the bootloader via the official emui site but it only sayd that the account has not been used more than 14 days on the phone. So I emailed Huawei support and they said I schoud send them my phone data. I did so but they only replied that my phone doesn't come from the state where I life in and they can't do anything. So im now stucked​ with a locked bootloader. Can I do anything? Like install an other firmware or unlock the bootloader in an other way ?

I also can't unlock my bootloader. When using the DC-unlocker to read the code, did you enter manufacture mode first? (Enable "manufacture mode" on your phone. This is done by entering in dial pad code *#*#2846579#*#*, select "Project Menu", "Background settings", "USB ports settings", "Manufacture mode". Then connect it to PC and install drivers)
I was able to get the code from Huawei, but when I try to enter fastboot command to unlock I get "Failed: password wrong"

I used the code from Huawei and it worked for me. On EVA-L09 though. Did you make sure you entered the details correctly to request the bootloader unlock code from huawei?

Strangely it wored now just fine with dc unlocker and I was able to root l.

benjamen50 said:
I used the code from Huawei and it worked for me. On EVA-L09 though. Did you make sure you entered the details correctly to request the bootloader unlock code from huawei?
Click to expand...
Click to collapse
I must have entered the information in 4 different times, both in English and Chinese site. I get the same code each time. I even rolled back to MM and requested. Same code each time. Not sure what else I could be doing wrong.
Edit/update: I tried to unlock with DC Unlocker and it worked. The code that DC Unlocker gave me was different from the official Huawei site.

Bricked and can't get unlock bootloader

Hope someone can help me out here. Here's what happened:
1. Bricked my phone after downgrading firmware
2. Unable to load and stuck on Huawei logo
3. Can't enter recovery with the vol up + power buttons
4. Only can boot into bootloader with vol down + power buttons
5. Used DC Unlocker to view all the required info to generate unlock code - IMEI, Serial no., etc.
6. Retrieved code generated from Huawei site and Product ID Generator
7. Tried unlocking bootloader with SRK tool or manually via fastboot but it kept showing - fastboot oem unlock *my unlock code* > FAILED (remote: Command not allowed).
8. Reinstalled USB driver and tried again but still the same error
I've also tried dload with the stock update.app downloaded from official Huawei site and the 3 buttons combination (vol up + vol down + power) doesn't work at all.
I'm not sure what else I can do now. Hope someone can be able to help. Thanks in advance.
Update: after struggling for a few weeks trying to unbrick the P9 and my local Huawei service center tried to charge me for at least $400 and claimed that they need to change the board to fix it, DC Phoenix was able to sort my problem out with 15 Euros. It was well worth it and I got my P9 back to working state again.
Here's what I realized happened to my phone before it was bricked. All partitions were corrupted due to a bad update.app or possibly due to a bad cable (noticed it was torn up like one of those apple cables).
DC Phoenix - You don't have to worry if your bootloader or FRP is still locked. It'll use a backdoor to write every partition from a stock .app firmware file and that's pretty neat.
Lesson learnt and to anyone who's trying to root, downgrade, flash or fiddle with anything on your Huawei, enable your OEM unlock in developer options or you'll get a hard time trying to unbrick if anything goes wrong.
Revived: Huawei P9 (EVA-L19)

I've gone through that before, but ended up using DC-Phoenix to unbrick it when it's FRP and bootloader locked. Cost me about $15. There is a post on how to do this but I'll have to search for it again.
Here is the post I used:
https://forum.xda-developers.com/showpost.php?p=71767614&postcount=7
This was done using a EVA-L09 phone.

Thanks for the information @benjamen50. I've considered using DC Phoenix too but that software doesn't look too assuring.
I'll update once I have the time to try DC Phoenix.

paperheart said:
Thanks for the information @benjamen50. I've considered using DC Phoenix too but that software doesn't look too assuring.
I'll update once I have the time to try DC Phoenix.
Click to expand...
Click to collapse
It works 100%. I had to use it too to unbrick my device good luck

I was stuck on same scenario, have cell under warranty and things normal after submitted to service center, but before went to service center, i searched over the internet, you just de-brand your cell and all things will be normal

May I ask, how and where did you get the unlock code?

Update: after struggling for a few weeks trying to unbrick the P9 and my local Huawei service center tried to charge me for at least $400 and claimed that they need to change the board to fix it, DC Phoenix was able to sort my problem out with 15 Euros. It was well worth it and I got my P9 back to working state again.
Here's what I realized happened to my phone before it was bricked. All partitions were corrupted due to a bad update.app or possibly due to a bad cable (noticed it was torn up like one of those apple cables).
DC Phoenix - You don't have to worry if your bootloader or FRP is still locked. It'll use a backdoor to write every partition from a stock .app firmware file and that's pretty neat.
Lesson learnt and to anyone who's trying to root, downgrade, flash or fiddle with anything on your Huawei, enable your OEM unlock in developer options or you'll get a hard time trying to unbrick if anything goes wrong.
Revived: Huawei P9 (EVA-L19)

randomusername85 said:
May I ask, how and where did you get the unlock code?
Click to expand...
Click to collapse
The code is generated from a combination of model, product serial number, IMEI and product ID. Here are the steps to get all those details:
Head to this site - https://emui.huawei.com/en/plugin/unlock/detail
Login or signup if you don't have an account. Under 'unlock' page there's a form you'll need to fill
On your device:
Go to Settings > Developer Options and enable OEM unlocking
IMEI and serial number can be found in Settings > About > Status
Dial *#*#1357946#*#* to get your product ID
Fill in all these details in the form on emui site and it'll generate an unlock code for your device.

paperheart said:
The code is generated from a combination of model, product serial number, IMEI and product ID. Here are the steps to get all those details:
Head to this site - https://emui.huawei.com/en/plugin/unlock/detail
Login or signup if you don't have an account. Under 'unlock' page there's a form you'll need to fill
On your device:
Go to Settings > Developer Options and enable OEM unlocking
IMEI and serial number can be found in Settings > About > Status
Dial *#*#1357946#*#* to get your product ID
Fill in all these details in the form on emui site and it'll generate an unlock code for your device.
Click to expand...
Click to collapse
cannot access my device

How to obtain the bootloader unlock code since Huawei not supply the code anymore

Recently i have buy a refurbish P9 Plus (VIE-L29) and i know huawei have not supply the unlock code anymore.
I have try to email but no luck for me.
Do guys know how to unlock the phone right now? I need to gain the root access for my tasker's task.

DC unlocker ?

dc unlocker

Bootloader re-locked after OTA update

Hey, for a reasons I needed to do ota update (reflashed stock recovery[extracted from matching update] before doing so), now when im trying to reinstall TWRP i've noticed that my bootloader re-locked on its own.
Was this supposed to happen? iirc people keep telling you that you can't relock bootloader without it's backup from locked state.
It's quite annoying that it happen since I did pay for unlock via DC unlocker and now huawei stopped distributing unlock codes so I'll probably need to pay DC again.
Cheers!
edit: DC unlocker did not even allow me to Unlock bootloader, only thing i saw was Lock bootloader, but there was option to "Read bootloader code" (no credits needed) and I managed to unlock bootloader again using fastboot and this code

TheRadziu said:
Hey, for a reasons I needed to do ota update (reflashed stock recovery[extracted from matching update] before doing so), now when im trying to reinstall TWRP i've noticed that my bootloader re-locked on its own.
Was this supposed to happen? iirc people keep telling you that you can't relock bootloader without it's backup from locked state.
It's quite annoying that it happen since I did pay for unlock via DC unlocker and now huawei stopped distributing unlock codes so I'll probably need to pay DC again.
Cheers!
edit: DC unlocker did not even allow me to Unlock bootloader, only thing i saw was Lock bootloader, but there was option to "Read bootloader code" (no credits needed) and I managed to unlock bootloader again using fastboot and this code
Click to expand...
Click to collapse
This is a flag in OTA update, it may be present or not (now seems to be always enforced, new Huawei policy) that OTA locks Bootloader
You cannot disable this flag in OTA package
Bootloader is not relocked but really locked (better for those who go to service under warranty)
Bootloader code is unique for your device.
No matter did you obtain it from Huawei or DC, you have TO KEEP it, you don't need to pay, read or ask again, just use the same bootloader code for the same phone for the lifetime of your phone

zgfg said:
This is a flag in OTA update, it may be present or not (now seems to be always enforced, new Huawei policy) that OTA locks Bootloader
You cannot disable this flag in OTA package
Bootloader is not relocked but really locked (better for those who go to service under warranty)
Bootloader code is unique for your device.
No matter did you obtain it from Huawei or DC, you have TO KEEP it, you don't need to pay, read or ask again, just use the same bootloader code for the same phone for the lifetime of your phone
Click to expand...
Click to collapse
thanks for the answer, didnt know about flag nor that bootloader unlock code can be used multiple times(and that its paired with HW)
nevertheless, as I said in my edit I managed to get my unlock code for free with dc unlocker

TheRadziu said:
thanks for the answer, didnt know about flag nor that bootloader unlock code can be used multiple times(and that its paired with HW)
nevertheless, as I said in my edit I managed to get my unlock code for free with dc unlocker
Click to expand...
Click to collapse
Did you compare it, is it the same like previous time

zgfg said:
Did you compare it, is it the same like previous time
Click to expand...
Click to collapse
that's what I suspect, but sadly can't confirm or deny. I think I didn't even see the code itself when I used it for the first time due to the fact that unlock process was automatized within DC unlocker's client app, so all I had to do was to prepare the phone and press Unlock Bootloader within the client

TheRadziu said:
that's what I suspect, but sadly can't confirm or deny. I think I didn't even see the code itself when I used it for the first time due to the fact that unlock process was automatized within DC unlocker's client app, so all I had to do was to prepare the phone and press Unlock Bootloader within the client
Click to expand...
Click to collapse
I used DC client once (4 Euros), I obtained the code (saved it for future) and used in Fastboot to unlock Bootloader just like previously for the other Huawei phone whose code I obtained for free from Huawei (before they closed this service)

Phone locked, FRP unlocked

I have a P9 (EVA-L09) branded to 3Ireland. I asked the service provider for the unlock code and got this:
Hi there,
Thanks for your recent unlock code request.
Below is the unlock code for Huawei IMEI 862836031485752.
Your unlock code is 1738262161041091. Please find instructions to unlocking your phone or modem below.
So I put a vodafone SIM in the p9 and it asked for the unlock code which I entered. My vodafone SIM works fine so the P9 is SIM unlocked.
With a view to installing LineageOS, I enabled Developer Options, Enabled OEM unlock and USB debugging. I then powered off the phone.
Holding the Vol Down button, I inserted the USB cable and the P9 restarted in Fastboot&Recovery Mode.
However, it says, in green, Phone Locked, and, in red, FRP Unlock.
I guess I have to unlock it to install TWRP but how do I proceed?
TIA
Dermot

dmcdonnell said:
I have a P9 (EVA-L09) branded to 3Ireland. I asked the service provider for the unlock code and got this:
Hi there,
Thanks for your recent unlock code request.
Below is the unlock code for Huawei IMEI 862836031485752.
Your unlock code is 1738262161041091. Please find instructions to unlocking your phone or modem below.
So I put a vodafone SIM in the p9 and it asked for the unlock code which I entered. My vodafone SIM works fine so the P9 is SIM unlocked.
With a view to installing LineageOS, I enabled Developer Options, Enabled OEM unlock and USB debugging. I then powered off the phone.
Holding the Vol Down button, I inserted the USB cable and the P9 restarted in Fastboot&Recovery Mode.
However, it says, in green, Phone Locked, and, in red, FRP Unlock.
I guess I have to unlock it to install TWRP but how do I proceed?
TIA
Dermot
Click to expand...
Click to collapse
You mean your mobile service provider?
If so, they gave you SIM unlock code to make your phone open for SIM cards from other operators
But that has nothing with the unlocking the Bootloader - what you see in Fastboot and what you need for flashing is about unlocking the Bootloader
Operators don't provide/sell the codes to unlock Bootloaders - rooting, custom ROMs are not in their interest
In the old days, Huawei provided (for free) Bootloader codes. They stopped and for the new phones made it really hard to unlock the Bootloaders, for some even impossible (at least, yet)
For the old P9 you can still buy a code from e.g. DC Unlocker (use Google)
But then, be careful, read the guides first - this mistake with buying a wrong code was benign while flashing an interviewcompatible ROM can brick your phone.
E.g., you are most likely on EMUI 5, and you cannot use any GSI ROM but only ROMs that were ported and adapted for P9, EMUI 5 ( Nougat firmwares). Also, if the ROM instructions say it is for P9 but EMUI 8, it is not for your phone (unless you rebrand and upgrade to Chinese EMUI 8)
It's not, take any AOSP or GSI ROM from elsewhere and flash to Huawei. If you are new in the game, go to the P9 Custom ROMs section here on XDA and read the OP posts to make sure you fullfil the requirements before you flash.
Be aware that most of those threads are 'dead' - early flashoholics long ago moved to the newer phones. Few remaining who stayed with P9 (usually as a second phone), upgraded to Chinese EMUI 8 (Oreo), and you can find them only in the few still active threads. Be careful and good luck

You can get one using dc unlocker for 4 euros. Just jut it down upon getting it. From there its smooth sailing on TWRP. You have to reinstall twrp from time to time if you are on stock though

@zgfg, I greatly appreciate the clear and comprehensive explanation. Very helpful.
 @Bill, 4€ is a reasonable price to pay for an old phone.
Thanks you!