Database Users

P9 Lite VNS-L31 - Can't upgrade to nougat after rollback

Hi all,
i own a p9 lite that was on Nougat VNS-L31C432B381 and i decided to rollback to MM. Following Huawei website instructions I downloaded two packages (rollback package and MM) and with 3 buttons method I flash first the rollback package and then MM. All went right and the ROM was stable. After a while of testing (that's why i went to MM), I decided to upgrade to nougat again. From updater it download and install the new android version (1.25 GB). After reboot I noticed that some system app was missing (file manager first). At every reset/factory reset some system app disappear. I repeated the procedure to rollback and upgrade again with the same result. The only way to use the device was to reflash MM and don't upgrade. Here some information I found:
- my starting version was Nougat VNS-L31C432B381
- now I'm on VNS-L31C432B160 (B160 isn't for dual sim? i have the single sim version) stock recovery bootloader locked
- updater try to install VNS-L31C432B370 (instead of B371?)
- if I try upgrade throught updater SN became something like ndr90 test key
- I tried to restore data,syste,vendor,oeminfo ecc.. from backups made with TWRP in Nougat (maybe wahile i was on MM, I'm not sure). It show the correct SN but ROM was still unstable
- I thought to try install full Nougat ROM but i didn't find any package
Can someone help me?
Thank you

The B37x update that the phone automatically finds after rollback doesn't work and will take you to ndr90 test key as you found out B160 is dualsim so you should flash the 161 one. Then use this guide to update through firmwarefinder/proxy https://forum.xda-developers.com/huawei-p9lite/how-to/how-to-b388-nougat-maybe-b381-guide-t3612072
If you want to unlock your bootloader you can also flash B3xx through twrp. If not, the guide above works fine.

Mara-X said:
The B37x update that the phone automatically finds after rollback doesn't work and will take you to ndr90 test key as you found out B160 is dualsim so you should flash the 161 one. Then use this guide to update through firmwarefinder/proxy https://forum.xda-developers.com/huawei-p9lite/how-to/how-to-b388-nougat-maybe-b381-guide-t3612072
If you want to unlock your bootloader you can also flash B3xx through twrp. If not, the guide above works fine.
Click to expand...
Click to collapse
Hi Mara-X and thank you for you answer.
After I write the post i found the B161 package and i decided to give it a try. After flash (all ok) I launched updater again and it download the B371. The update went well and now i'm updating at B381 again throught updater. I think, when it was done, i'll factory reset the device for a clean install. So it seems the problem was B160/161 -single/dual version.

Serious problem installing stock firmware p10 lite

Hi everyone, I installed RR on my P10 lite (WAS-LX1A) and all used to work great except for the sound so I thought that the ROM was not good and I began to reinstall the backup of EMUI I did with TWRP but without success. So I searched online the stock firmware and I found several versions and I tried to install one using a guide and It seemed to work until I began the first configuration of the device. Every time I finish the configuration It resends me to the beginning and I cannot install other firmwares because they stuck on 5% or it gives me "Installation failed". I cannot install TWRP too because fastboot says "command not allowed" when I try to flash it even if my bootloader and Phone Finder are unlocked. Please help me.

I succeded in installing EMUI bit it's NRD90M test keys. I found online some guides that say to use twrp in order to flash the full update. But I cannot install any twrp because when I go in fastboot mode it says:
Bootloader unlock (red)
FRP Lock (green)

you need restore device with dcphoenix(paid method)

For any steps of fastboot, need frp unlock.

rambik33 said:
For any steps of fastboot, need frp unlock.
Click to expand...
Click to collapse
fastboot oem unlock xxxxxxxxxxxxxxxxxxxxxx (bootloader code)

exilio99 said:
Hi everyone, I installed RR on my P10 lite (WAS-LX1A) and all used to work great except for the sound so I thought that the ROM was not good and I began to reinstall the backup of EMUI I did with TWRP but without success. So I searched online the stock firmware and I found several versions and I tried to install one using a guide and It seemed to work until I began the first configuration of the device. Every time I finish the configuration It resends me to the beginning and I cannot install other firmwares because they stuck on 5% or it gives me "Installation failed". I cannot install TWRP too because fastboot says "command not allowed" when I try to flash it even if my bootloader and Phone Finder are unlocked. Please help me.
Click to expand...
Click to collapse
Hello, you can not do nothing if either FRP or bootloader are locked. You can either use DC Unlocker to unlock the FRP lock or DC Phoenix To Flash The Stock Image all over again... or you can take it to repair for mainboard replacement. I reccomend that you unlock frp and then extract the stock firmware using huawei update extractor. You can get the firmware by installing Firmware Finder On your pc and then searching for an appropriate firmware.

Thanks, I succeeded installing a stock firmware I found online but there's another problem now. Some stock apps are missing just like the file gestor and the updater in settings. If I go in phone information it gives me that my firmware is NRD90m test-keys. What should do I do?

exilio99 said:
Thanks, I succeeded installing a stock firmware I found online but there's another problem now. Some stock apps are missing just like the file gestor and the updater in settings. If I go in phone information it gives me that my firmware is NRD90m test-keys. What should do I do?
Click to expand...
Click to collapse
missing some apps because of dead cust,vendor,product...etc.
You can restore your phone using stock system updater and huawei firmware finder's proxy server
update to your device firmware version's fullOTA
and you can back to stock!
tested with my was-lx2j
sorry for my bad english

I'll try it. Thank you!

hayabusa2yk said:
missing firmware because of dead cust,vendor,product...etc.
You can restore your phone using stock system updater and huawei firmware finder's proxy server
update to your device firmware version's fullOTA
and you can back to stock!
tested with my was-lx2j
sorry for my bad english
Click to expand...
Click to collapse
is it possible install apk from system/priv-app or similiar, i think is missed

foliaje said:
is it possible install apk from system/priv-app or similiar, i think is missed
Click to expand...
Click to collapse
Yes you can but no need to do it because it already installed.
Sorry for my bad English

hayabusa2yk said:
Yes you can but no need to do it because it already installed.
Sorry for my bad English
Click to expand...
Click to collapse
Excuse me but in 4th post, he hasn't an updater option in settings, in my second huawei(semi-breaked)
No updater, no file manager, no stock gapps(i dont care), build number system-5.1.78(fail to change oeminfo etc..) so tell me clearly like fix.

foliaje said:
Excuse me but in 4th post, he hasn't an updater option in settings, in my second huawei(semi-breaked)
No updater, no file manager, no stock gapps(i dont care), build number system-5.1.78(fail to change oeminfo etc..) so tell me clearly like fix.
Click to expand...
Click to collapse
try firmware updating with hisuite + huawei firmware finder's proxy

I tried but it's stopped at 5% of installation. I cannot do a update through the updater because it doesn't exist in this test version. Can I try something else?

I tried with hisuite and firmware finder using the proxy method but it can't find any update...

[SOLVED] NRD90M test-keys - Nougat Stock Firmware Huawei Mate 8

Hi all,
I just want to share with you all how i solved NRD90M test-keys on my Mate 8. 2 weeks ago, I've successful to debrand from L29 to AL10 and updated to Oreo EMUI 8. After awhile, i found bugs or error when i connected to PC or Laptop, my phone will go haywire like someone is touching the screen everywhere. I suspected it might be came from cust.img that i flashed to make sim and data detect.
Then i made a decision to debrand again to DL00, and successfully rollback to MM B386 using Hisuite version 8. After that i flashed dualcu_cn.zip using TWRP and successful to debrand to DL00. I checked the OTA update, there is DL00C00B577 Nougat update and i download and installed it. My Mate 8 became NRD90M test-keys after successfully updated to Nougat. For one and a half day i searched in internet and XDA on how to get rid of NRD90M test-keys and update to next build of Nougat. On XDA, I've found several thread regarding NRD90M test-keys like https://forum.xda-developers.com/mate-8/general/info-rom-nrd90m-test-keys-android-7-0-t3750147, https://forum.xda-developers.com/mate-8/help/nrd90m-test-keys-t3549124 and https://forum.xda-developers.com/mate-8/help/stuck-nrd90m-test-keys-t3590461 but without proper steps and procedures. So people like me a noob or newbies will stuck on how to solve the problem. So I've do some test for my Mate 8 by using one of this methods which are HuRUpdater, HWOTA and erecovery. I can said that 90% of chances rate it will success but you'll need to download FullOTA-MF stock firmware. I'm using erecovery so no need to download it.
Requirement:
1. Unlocked bootloader
2. TWRP Installed
3. HuRUpdater - Link : https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279
4. HWOTA - Link: https://cloud.mail.ru/public/DEWc/a9fDVbgpz
5. update.zip - FullOTA-MF (for me NXT-DL00C17B592-full in erecovery)
6. update_all_hw.zip
7. update_data_public.zip
8. Back up your data using HiSuite or SD card.
Instruction
Method 1 using HuRUpdater
1. Make sure your bootloader is unlocked and TWRP is installed.
2. Download HuRUpdater.zip, update.zip-FullOTA-MF (your stock firmware), update_all_hw.zip and update_data_public.zip.
3. Make a new folder in SD Card root (you can name it base on its firmware) and put all the zips that you already downloaded in the folder.
4. Boot your Mate 8 to TWRP and choose sd card > folder > HuRUpdater.zip. It'll reboot into recovery and start flash firmware.
5. Your phone will update to the newest build number base on your stock firmware.
6. You can follow the steps in this link https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279
Method 2 using HWOTA
1. Make sure your bootloader is unlocked and TWRP is installed.
2. Download HWOTA.zip, update.zip-FullOTA-MF (your stock firmware), update_all_hw.zip and update_data_public.zip.
3. Extract HWOTA.zip into HWOTA folder in your PC and put all the zips that you already downloaded in that folder. Copy HWOTA folder in your SD Card.
4. Boot your Mate 8 to TWRP and choose HWOTA folder and select nxt_hwota_update.zip. It'll reboot into recovery and start flash firmware.
5. Your phone will update to the newest build number base on your stock firmware.
6. You can follow the steps in this link https://forum.xda-developers.com/mat...ate-8-t3785320. This HWOTA.zip also can use to flash OREO EMUI 8 firmware.
P/S: I think HuRUpdater and HWOTA is the same method but using different script binary.
Method 3 using eRecovery
1. Press Vol + and Power button at the same time for 3-5 sec.
2. Choose your WIFI (need strong connection), if not it will failed to download recovery firmware.
3. If your WIFI have a strong connection it'll start to download recovery firmware and install.
4. Wait until finish installation
5. Your phone will update to the newest build number base on your stock firmware.
P/S: If you're using C636,C432,C185, i think it's useless. because i'm from C636 it's never captured the recovery firmware. so in case if your phone bricked or test keys, you can use HuRUpdater method. This method only working on chinese variants is what i think.
Additional info:
DESCRIPTION FOR FIRMWARE
1- OTA Firmware: (Over The Air) That mean the update file can install on the available os and upgrade or fix some bugs. (if the update build number is compatible with your phone).
2- FullOTA: Full OTA firmware is Full package of firmware and it can unbrick your phone.
3- FullOTA-MF: Full OTA MF firmware is Full package of firmware and it can unbrick your phone model with any buid number.
4- FullOTA-PV: Full OTA PV firmware is a Point-Version firmware, which means it can unbrick your phone depend on build number.
5- OTA-PV: Point-Version, such firmware are designed to update from one version of android to another. (build number is important)
6- OTA-MF: MF is a multi-file firmware, which means that there are several update packages in it.
Source : http://huawei-firmware.com/pages/ext/a/description/index.html
All thanks goes to @zxz0O0 for HurUpdater.zip, @apat26 for his thread HWOTA, 4pda forum and Huawei community.

ceriqdesign said:
Hi all,
I just want to share with you all how i solved NRD90M test-keys on my Mate 8. 2 weeks ago, I've successful to debrand from L29 to AL10 and updated to Oreo EMUI 8. After awhile, i found bugs or error when i connected to PC or Laptop, my phone will go haywire like someone is touching the screen everywhere. I suspected it might be came from cust.img that i flashed to make sim and data detect.
Then i made a decision to debrand again to DL00, and successfully rollback to MM B386 using Hisuite version 8. After that i flashed dualcu_cn.zip using TWRP and successful to debrand to DL00. I checked the OTA update, there is DL00C00B577 Nougat update and i download and installed it. My Mate 8 became NRD90M test-keys after successfully updated to Nougat. For one and a half day i searched in internet and XDA on how to get rid of NRD90M test-keys and update to next build of Nougat. On XDA, I've found several thread regarding NRD90M test-keys like https://forum.xda-developers.com/mate-8/general/info-rom-nrd90m-test-keys-android-7-0-t3750147, https://forum.xda-developers.com/mate-8/help/nrd90m-test-keys-t3549124 and https://forum.xda-developers.com/mate-8/help/stuck-nrd90m-test-keys-t3590461 but without proper steps and procedures. So people like me a noob or newbies will stuck on how to solve the problem. So I've do some test for my Mate 8 by using one of this methods which are HuRUpdater, HWOTA and erecovery. I can said that 90% of chances rate it will success but you'll need to download FullOTA-MF stock firmware. I'm using erecovery so no need to download it.
Requirement:
1. Unlocked bootloader
2. TWRP Installed
3. HuRUpdater - Link : https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279
4. HWOTA - Link: https://cloud.mail.ru/public/DEWc/a9fDVbgpz
5. update.zip - FullOTA-MF (for me NXT-DL00C17B592-full in erecovery)
6. update_all_hw.zip
7. update_data_public.zip
8. Back up your data using HiSuite or SD card.
Instruction
Method 1 using HuRUpdater
1. Make sure your bootloader is unlocked and TWRP is installed.
2. Download HuRUpdater.zip, update.zip-FullOTA-MF (your stock firmware), update_all_hw.zip and update_data_public.zip.
3. Make a new folder in SD Card root (you can name it base on its firmware) and put all the zips that you already downloaded in the folder.
4. Boot your Mate 8 to TWRP and choose sd card > folder > HuRUpdater.zip. It'll reboot into recovery and start flash firmware.
5. Your phone will update to the newest build number base on your stock firmware.
6. You can follow the steps in this link https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279
Method 2 using HWOTA
1. Make sure your bootloader is unlocked and TWRP is installed.
2. Download HWOTA.zip, update.zip-FullOTA-MF (your stock firmware), update_all_hw.zip and update_data_public.zip.
3. Extract HWOTA.zip into HWOTA folder in your PC and put all the zips that you already downloaded in that folder. Copy HWOTA folder in your SD Card.
4. Boot your Mate 8 to TWRP and choose HWOTA folder and select nxt_hwota_update.zip. It'll reboot into recovery and start flash firmware.
5. Your phone will update to the newest build number base on your stock firmware.
6. You can follow the steps in this link https://forum.xda-developers.com/mat...ate-8-t3785320. This HWOTA.zip also can use to flash OREO EMUI 8 firmware.
P/S: I think HuRUpdater and HWOTA is the same method but using different script binary.
Method 2 using eRecovery
1. Press Vol + and Power button at the same time for 3-5 sec.
2. Choose your WIFI (need strong connection), if not it will failed to download recovery firmware.
3. If your WIFI have a strong connection it'll start to download recovery firmware and install.
4. Wait until finish installation
5. Your phone will update to the newest build number base on your stock firmware.
P/S: If you're using C636,C432,C185, i think it's useless. because i'm from C636 it's never captured the recovery firmware. so in case if your phone bricked or test keys, you can use HuRUpdater method. This method only working on chinese variants is what i think.
Additional info:
DESCRIPTION FOR FIRMWARE
1- OTA Firmware: (Over The Air) That mean the update file can install on the available os and upgrade or fix some bugs. (if the update build number is compatible with your phone).
2- FullOTA: Full OTA firmware is Full package of firmware and it can unbrick your phone.
3- FullOTA-MF: Full OTA MF firmware is Full package of firmware and it can unbrick your phone model with any buid number.
4- FullOTA-PV: Full OTA PV firmware is a Point-Version firmware, which means it can unbrick your phone depend on build number.
5- OTA-PV: Point-Version, such firmware are designed to update from one version of android to another. (build number is important)
6- OTA-MF: MF is a multi-file firmware, which means that there are several update packages in it.
Source : http://huawei-firmware.com/pages/ext/a/description/index.html
All thanks goes to @zxz0O0 for HurUpdater.zip, @apat26 for his thread HWOTA, 4pda forum and Huawei community.
Click to expand...
Click to collapse
hello, in the meantime I thank you my mate8 is much improved the only problem is that I am still in NRD90M test-keys.

manuele16 said:
hello, in the meantime I thank you my mate8 is much improved the only problem is that I am still in NRD90M test-keys.
Click to expand...
Click to collapse
are you using HuRUpdater method?can you give me more info about your mate 8

ceriqdesign said:
are you using HuRUpdater method?can you give me more info about your mate 8
Click to expand...
Click to collapse
Of course...
Model number: NXT
No. Series: NRD90M Test Keys
Emui: 5.0
Android: 7.0
Vendor: hw
Country: meafnaf
please consider that my goal is to make it NXT-L29C432.
Originally on the box is reported NXT-AL10

manuele16 said:
Of course...
Model number: NXT
No. Series: NRD90M Test Keys
Emui: 5.0
Android: 7.0
Vendor: hw
Country: meafnaf
please consider that my goal is to make it NXT-L29C432.
Originally on the box is reported NXT-AL10
Click to expand...
Click to collapse
So originally you came from NXT-AL10 and without changing oeminfo with SRK Tool then you used the HuRUpdater?
Is it your bootloader still unlocked or locked?

I did not change oeminfo, or rather I tried with SRK tool, but I did not succeed.
Yes, I used HuRUpdater.
Bootloader unlocked

manuele16 said:
I did not change oeminfo, or rather I tried with SRK tool, but I did not succeed.
Yes, I used HuRUpdater.
Bootloader unlocked
Click to expand...
Click to collapse
I managed to get Vendor: hw and Country: eu.
but I'm still in nrd90

manuele16 said:
I did not change oeminfo, or rather I tried with SRK tool, but I did not succeed.
Yes, I used HuRUpdater.
Bootloader unlocked
Click to expand...
Click to collapse
Yup no wonder you're on NRD90M..you need to change oeminfo first before flash c432 firmware..

TWRP Huawei mate 8
Hello, my people, how are you?
I have a doubt, the truth is I am very new in this.
I have a Huawei Mate 8 NXT-L29 which updates to Android 7 with an app called "Firmware Finder for Huawei" and then I started my problems, the clock does not work, I can not enter the updater among others. What I would like is to change that rom for another or if it were for a stock.
I have the bootloader open and a TWRP (twrp-3.2.3-0-next) which is the only one that has worked for me but I have not been able to install another rom it tells me this: "error when dismounting" / '/ cust /' (invalid argument) and I do not know what I'm doing wrong ...
the compilation that this app left me is: NRD90M test-keys
and the rom that I want to install is: NXTL26C605B580
I would like to know your recommendations and corrections to what I am doing and thank you and I apologize for my English, which is very bad!

riky26 said:
Hello, my people, how are you?
I have a doubt, the truth is I am very new in this.
I have a Huawei Mate 8 NXT-L29 which updates to Android 7 with an app called "Firmware Finder for Huawei" and then I started my problems, the clock does not work, I can not enter the updater among others. What I would like is to change that rom for another or if it were for a stock.
I have the bootloader open and a TWRP (twrp-3.2.3-0-next) which is the only one that has worked for me but I have not been able to install another rom it tells me this: "error when dismounting" / '/ cust /' (invalid argument) and I do not know what I'm doing wrong ...
the compilation that this app left me is: NRD90M test-keys
and the rom that I want to install is: NXTL26C605B580
I would like to know your recommendations and corrections to what I am doing and thank you and I apologize for my English, which is very bad!
Click to expand...
Click to collapse
Sorry for late reply as for now i'm quite busy with life..can you tell me what your model before you change to NXTL26C605B580?

Nova Plus MLA-AL10 signal and flashing

Hi, I met some problems with my Nova plus mla-al10.
In short, the phone cannot boot and I need help with getting the offical emui5.0 dload upgrade package. (probably)
Below is the whole story:
1. The phone is unlocked.
2. Upgraded emui4 180 to emui5 in the emui4 system. The system indicated the target version is emui5 352. After updated, my version turned into NRD 90M test-keys without many huawei custom apps. ( I think it's because of the lack of data-update package, but it's too late now)
3. I tried to solve the version problem and I flashed the phone through fastboot with RECOVERY, BOOT, SYSTEM & CUST extracted from the downloded update packages. ( First 358, later I tried several other versions, same failing)
4. Then I cannot boot my phone. Just enter erecovery after 2nd reboot, and I cannot get the Rom downloaded through erecovery. Error reported.
5. Then I tried the dload update mode with a certain emui4 dload rom which I can only got from the internet for the MLA version. I cannot make sure what the ROM version was, like b122 or b133, emui4. I failed during update in the official recovery. 5%, 45% ,several times.
6. So I tried to use the twrp and both lineage and asop rom from #Henkate. Thank you #Henkate, the phone booted again. The system worked fine, except for one problem: When I use the China mobile(TD-LTE) and China unicom(WCDMA/LTE), I cannot dial out or dial in ( busy line). The sms and data(internet) worked fine. The signal is good. The sim card seemed to be successfully registered. China telecom seems worked fine(FDD-LTE) with dialing, sms and network. By the way, the china telecom simcard is the first card I used in the first lineage's first boot. I just found it abnormal with the problem above recent days.
7. Then I flashed the asop from #Henkate after wiping the system, cache and data. The same problem.
8. Now I cannot get where the problem is. I guess maybe the baseband software got wrong, so I wanted to flash the modem.img into the phone. The only way I think possible is to flash the dload package with version above 358 (or 360 which I also flashed through fastboot)through the huawei official recovery. The question is where I can get the package and is it the right thing to do? If not, how can I get back to the offical EMUI or other roms functioning normally?
Please help!
Thank you in advance!

relock bootloader+rom stock+encryption unsuccessfull !!

Hello, I have a 2016 p9 lite. I would like to sell it. So I would like to re-lock the bootloader and re-install the original rom.
build number: VNS-L31C432B412
version of EMUI: 5.0.1
Android 7.0 version
How should I do it ? Where can I get the original rom?
Currently I have twrp elite 3.1.1.1 installed and it refuses to boot on the system because: "encryption unsuccessfull: encryption was interrupted and can't complete. As a result, the data on your phone is no longer accessible.
Please help

toto6976 said:
Hello, I have a 2016 p9 lite. I would like to sell it. So I would like to re-lock the bootloader and re-install the original rom.
build number: VNS-L31C432B412
version of EMUI: 5.0.1
Android 7.0 version
How should I do it ? Where can I get the original rom?
Currently I have twrp elite 3.1.1.1 installed and it refuses to boot on the system because: "encryption unsuccessfull: encryption was interrupted and can't complete. As a result, the data on your phone is no longer accessible.
Please help
Click to expand...
Click to collapse
Try to install Service ROM from SD card using dload method.
Link:
https://androidhost.ru/41d
Follow instructions in file "ReleaseDoc". (Read everything carefully before doing anything).
Through this process, your data will be deleted and bootloader will be locked again.
Dload method works with Stock Recovery only, you have to install Stock Recovery first.

toto6976 said:
Hello, I have a 2016 p9 lite. I would like to sell it. So I would like to re-lock the bootloader and re-install the original rom.
build number: VNS-L31C432B412
version of EMUI: 5.0.1
Android 7.0 version
How should I do it ? Where can I get the original rom?
Currently I have twrp elite 3.1.1.1 installed and it refuses to boot on the system because: "encryption unsuccessfull: encryption was interrupted and can't complete. As a result, the data on your phone is no longer accessible.
Please help
Click to expand...
Click to collapse
Hey dude !!
So you bricked the device ....
I don't know why but if you want B412 firmware
you can use @-Alf- guide and re-upgrade via Firmware Finder
to B370 fullota-mf-pv first, then to B412 fullota-mf...
Or download a previous from B412 firmware (ex: VNS-L31C432B410 fullota-mf)
and use HuRupdater method to flash the firmware.
Extract then stock recovery from B410 via Huawei Extractor and flash it via TWRP.
Re-update finally to B412 using Firmware Finder.
I can help you doing this, worked on my ex device but i can't guarantee 100%.
Cheers

Dadditz said:
Hey dude !!
So you bricked the device ....
I don't know why but if you want B412 firmware
you can use @-Alf- guide and re-upgrade via Firmware Finder
to B370 fullota-mf-pv first, then to B412 fullota-mf...
Or download a previous from B412 firmware (ex: VNS-L31C432B410 fullota-mf)
and use HuRupdater method to flash the firmware.
Extract then stock recovery from B410 via Huawei Extractor and flash it via TWRP.
Re-update finally to B412 using Firmware Finder.
I can help you doing this, worked on my ex device but i can't guarantee 100%.
Cheers
Click to expand...
Click to collapse
Please read carefully, Maestro :
"I would like to sell it. So I would like to re-lock the bootloader and re-install the original rom."
Piece.

Hello,
I reinstalled the custom rom that I found on the net: C432B414 with Hurupdater.
It works.
However, the bootloader is still unlocked ... however, I would like to return to the factory configuration with the bootloader locked.
https://www.cjoint.com/c/JItgZO6GuGB
I have the stock recovery install :
https://www.cjoint.com/c/JItg7SqQmdB
I am currently downloading the file indicated by this link : https://androidhost.ru/41d
In the file provided by Alf, there are two files:
'HUAWEI P9 Lite Android7.0 rollback to Android6.0 operation instruction'
'HUAWEI VNS-L31C432B416 Software Upgrade Guideline'
which one do I choose

toto6976 said:
I am currently downloading the file indicated by this link : https://androidhost.ru/41d
In the file provided by Alf, there are two files:
'HUAWEI P9 Lite Android7.0 rollback to Android6.0 operation instruction'
'HUAWEI VNS-L31C432B416 Software Upgrade Guideline'
which one do I choose
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Unpack downloaded .zip package, you will see two files - ReleaseDoc and Software. Open "Software" and unpack SDUpdate_Package.tar.gaz. Transfer file dload to SD card and follow instructions - there is 'Software upgrade guidline' in file ReleaseDoc.
Edit.:
You can also safely lock BL with OEMINFO flashing and rollback to A6:
-Download OEMINFO:
https://mega.nz/#!xhEwFYLZ!Sv2nB5GERB_js76sAUWxj8hQgsjnf_YPobVbtrxpCew
Transfer it to the SD Card.
Download VNS-L31C432B160 fullupdate.zip:
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v66015/f1/full/update.zip
Create a folder dload on your SD , unpack downloaded .zip file and copy it to the dload folder.
Install TWRP 3.1.0-2:
https://mega.nz/#!EsESQQhK!uc_lfXEfDW6U7Lq2VeNOYq5OWUID0G-YyhK-oUL4deU
using command
fastboot flash recovery2 twrp.img (OVER eRECOVERY!) , boot in TWRP, fĺash oeminfo.zip , go back to TWRP's main menu, select Reboot and Power Off. Then use three button combo and flash firmware from dload. Your phone will running A6 with locked bontloader. If you want, you can upgrade back to A7 via OTA update or using Fipmware finder.