Database Develop

Need help to downgrade from Nougat to Stock Rom

Hi all, i've been trying to fix this for 2 days and still failed to get it working.
I regret that i quickly jump into the nougat build and would like to get back to stock rom for now.
I tried downloading all the ROMs at stock rom thread and keep on encountering error when update reached 51% with software package/update failed error message.
I'm using P9-L19 and hopefully can revert back to C636 roms.
Thanks.:crying:

have you try this?
http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068

lomunet said:
have you try this?
http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068
Click to expand...
Click to collapse
As someone new to this, this seems kinda complicated.
I'll give it a try. Just have to follow the instruction in the video?

Download the stock rom to external memory card in dload folder and use this code in phone dialer
*#*#2846579#*#*
And select update system

Flash update in dload don't work
Please help

Is your bootloader unlocked? Do you have a twrp backup?
I don't know if that's a good idea, but you could wipe system partition in twrp then flash stock recovery and try stock rom again? Going by the assumption that your current system is causing the update to fail.
Maybe nougat beta has a new recovery that won't flash old firmware? So maybe try an old recovery?
I'm just brainstorming though, no idea if any of this works. So try at your own risk.

yamabokra said:
Download the stock rom to external memory card in dload folder and use this code in phone dialer
*#*#2846579#*#*
And select update system
Click to expand...
Click to collapse
Just ordered a microsd card for this. I'll let you know how once the sd card arrived.

clouds5 said:
Is your bootloader unlocked? Do you have a twrp backup?
I don't know if that's a good idea, but you could wipe system partition in twrp then flash stock recovery and try stock rom again? Going by the assumption that your current system is causing the update to fail.
Maybe nougat beta has a new recovery that won't flash old firmware? So maybe try an old recovery?
I'm just brainstorming though, no idea if any of this works. So try at your own risk.
Click to expand...
Click to collapse
Hello, my P9 is 100% origin.

I managed to use an OTG cable and put the firmware (update.app) on a flash drive under the dload folder. then powered the phone off and pressed both the volume keys + power and the flashing started

you need to download full stock rom the same version as you have before upgrade to N. then try to flash via project menu (*#*#2846579#*#*)
if this method doesn't work you may need to goto recovery menu and wipe data/factory reset. then you might lost all your theme and system apps.
but you will be back to to stable stock rom. if you need to use theme and need the stock system app again to have to Root your device. and install data/hw_init via SRKTool
Hope this help.

OnimushaPooh said:
you need to download full stock rom the same version as you have before upgrade to N. then try to flash via project menu (*#*#2846579#*#*)
if this method doesn't work you may need to goto recovery menu and wipe data/factory reset. then you might lost all your theme and system apps.
but you will be back to to stable stock rom. if you need to use theme and need the stock system app again to have to Root your device. and install data/hw_init via SRKTool
Hope this help.
Click to expand...
Click to collapse
Do you have the full stock rom link available? I tried to wipe data/factory reset and it still remains at 7.0.

calintztan said:
Do you have the full stock rom link available? I tried to wipe data/factory reset and it still remains at 7.0.
Click to expand...
Click to collapse
After wipe data you need to dload stock rom again though
What is your build number before goto 7.0?

OnimushaPooh said:
After wipe data you need to dload stock rom again though
What is your build number before goto 7.0?
Click to expand...
Click to collapse
I tried to dload stock rom and it gives me some weird warning message and the update is stuck at 5% for 30++ mins.
L19 C636 B150 .

calintztan said:
I tried to dload stock rom and it gives me some weird warning message and the update is stuck at 5% for 30++ mins.
L19 C636 B150 .
Click to expand...
Click to collapse
OK you need Eva l19c636b168 you can find it here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586

OnimushaPooh said:
OK you need Eva l19c636b168 you can find it here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586
Click to expand...
Click to collapse
Sadly， it doesnt seems to work. I'll send my phone to service centre tomorrow and hopefully they can fix it.

calintztan said:
Sadly， it doesnt seems to work. I'll send my phone to service centre tomorrow and hopefully they can fix it.
Click to expand...
Click to collapse
First unlock your bootloader - then use Huawei Update extractor to extract ( I suggest the C636B168 Rom) from the Update.App the recovery.img - after flash from an adb folder the recovery.img through fastboot - use the three button to install the Rom and you're ready.
Warning.. everything in your internal storage will be erased so make a backup first.

crispaf77 said:
First unlock your bootloader - then use Huawei Update extractor to extract ( I suggest the C636B168 Rom) from the Update.App the recovery.img - after flash from an adb folder the recovery.img through fastboot - use the three button to install the Rom and you're ready.
Warning.. everything in your internal storage will be erased so make a backup first.
Click to expand...
Click to collapse
This method should work. :good::good:

i installed the huawei p 9 nougat version and i wanted to downgrade but nothing seems to work. I have got unlocked bootloader and when i had emui 4.1 my phone was rooted and i had twrp. But now i can´t boot into twrp. How can i downgrade ?

P8lite has no operating sys. CAN ANYONE HELLP ?

I've P8lite .. Rom be deleted by mistake while trying install SU
Now, phone has no operating system, Trying a lot to install many of Roms by twrp 3.0.2-0 ( C185B120, C185B525 And C185B560 ) more's the pity to no end with message "Skipping MD5 check: no MD5 file found" and "Could not find 'META-INF/com/google/android/update-binary' in the zip file". "Error installing zip file". "Failed".
Thanks in advance
ALE-L21 UAE

hosamzaiher said:
I've P8lite .. Rom be deleted by mistake while trying install SU
Now, phone has no operating system, Trying a lot to install many of Roms by twrp 3.0.2-0 ( C185B120, C185B525 And C185B560 ) more's the pity to no end with message "Skipping MD5 check: no MD5 file found" and "Could not find 'META-INF/com/google/android/update-binary' in the zip file". "Error installing zip file". "Failed".
Thanks in advance
ALE-L21 UAE
Click to expand...
Click to collapse
Since you have TWRP I guess you somehow deleted all the files ....
If you have a backup file (created with TWRP) you should be able to return to a previous state.
I had a problem intalling official builds, after installing a custom ROM.
You could try to install a custom ROM, like sokkoban's (very similar to the official one).

hosamzaiher said:
I've P8lite .. Rom be deleted by mistake while trying install SU
Now, phone has no operating system, Trying a lot to install many of Roms by twrp 3.0.2-0 ( C185B120, C185B525 And C185B560 ) more's the pity to no end with message "Skipping MD5 check: no MD5 file found" and "Could not find 'META-INF/com/google/android/update-binary' in the zip file". "Error installing zip file". "Failed".
Thanks in advance
ALE-L21 UAE
Click to expand...
Click to collapse
stock rom
Download the stock rom .
Copy it to sd card.
boot the device by pressing vol up ,down and power button
this will flash the stock rom
or
Re flash twrp 3.0.2
goto xda and download the rom made by hacky
and flash the zip thru twrp
i had same situation and i did this hope this will fix ?
macbeth

spirto82 said:
Since you have TWRP I guess you somehow deleted all the files ....
If you have a backup file (created with TWRP) you should be able to return to a previous state.
I had a problem intalling official builds, after installing a custom ROM.
You could try to install a custom ROM, like sokkoban's (very similar to the official one).
Click to expand...
Click to collapse
could u please send me a link 4 a custom ROM, like sokkoban's

nayeemudheen said:
stock rom
Download the stock rom .
Copy it to sd card.
boot the device by pressing vol up ,down and power button
this will flash the stock rom
or
Re flash twrp 3.0.2
goto xda and download the rom made by hacky
and flash the zip thru twrp
i had same situation and i did this hope this will fix
macbeth
Click to expand...
Click to collapse
i'll try:good:

hosamzaiher said:
could u please send me a link 4 a custom ROM, like sokkoban's
Click to expand...
Click to collapse
this is the link for sokkonban's ROM. This is for ALE L21 (Dual sim if I am not mistaken). He has made some other custom ROMS for other models. You can check them out if you want, but I suggest you use chrome with translate extension.
Good luck!!!

spirto82 said:
this is the link for sokkonban's ROM. This is for ALE L21 (Dual sim if I am not mistaken). He has made some other custom ROMS for other models. You can check them out if you want, but I suggest you use chrome with translate extension.
Good luck!!!
Click to expand...
Click to collapse
What's the meaning of the 4th requirement ..
- Installed Stock Android 6.0(B560, B564, B574) , As i had no operating system installed

hosamzaiher said:
What's the meaning of the 4th requirement ..
- Installed Stock Android 6.0(B560, B564, B574) , As i had no operating system installed
Click to expand...
Click to collapse
Can't you just flash the system.img trough fastboot?

staska_lt said:
Can't you just flash the system.img trough fastboot?
Click to expand...
Click to collapse
I don't know how, and how to boot in a fastboot if i haven't any sys. installed ?
isn't need ADB connection 2 pc ?

hosamzaiher said:
I don't know how, and how to boot in a fastboot if i haven't any sys. installed ?
isn't need ADB connection 2 pc ?
Click to expand...
Click to collapse
If I am not mistaken you can enter fastboot mode even without operating system. As for the 4th requirement, I think it's not essential since you can flash the zip file through twrp.
Sent using my Huawei P8 Lite Ale L21

spirto82 said:
If I am not mistaken you can enter fastboot mode even without operating system. As for the 4th requirement, I think it's not essential since you can flash the zip file through twrp.
Sent using my Huawei P8 Lite Ale L21
Click to expand...
Click to collapse
In twrp there is an option to boot to fastboot

staska_lt said:
In twrp there is an option to boot to fastboot
Click to expand...
Click to collapse
If you want to install a custom rom you can install it through twrp. If you want to install the official build (which is very messy with emui and I do not suggest that unless you get to the service center - or anyone else can provide a working guide) you must install a custom recovery.
In my opinion, you should install a custom rom (for instance Sokkoban's) in order to have an operational phone and then find a way to install the official build.
Sent using my Huawei P8 Lite Ale L21

spirto82 said:
If I am not mistaken you can enter fastboot mode even without operating system. As for the 4th requirement, I think it's not essential since you can flash the zip file through twrp.
Sent using my Huawei P8 Lite Ale L21
Click to expand...
Click to collapse
yes, i could boot in, but in Minimal ADB and Fastboot using pc it gives error "device closed"

spirto82 said:
If you want to install a custom rom you can install it through twrp. If you want to install the official build (which is very messy with emui and I do not suggest that unless you get to the service center - or anyone else can provide a working guide) you must install a custom recovery.
In my opinion, you should install a custom rom (for instance Sokkoban's) in order to have an operational phone and then find a way to install the official build.
Sent using my Huawei P8 Lite Ale L21
Click to expand...
Click to collapse
when i've never succeed flashing with TWRP, i converted into CWM
it stops to flash any thing more .. ZIP or IMG files with error message "couldn't un mount sdcard" !

hosamzaiher said:
yes, i could boot in, but in Minimal ADB and Fastboot using pc it gives error "device closed"
Click to expand...
Click to collapse
Do you have your bootloader unlocked?

spirto82 said:
Do you have your bootloader unlocked?
Click to expand...
Click to collapse
yes

hosamzaiher said:
yes
Click to expand...
Click to collapse
It's weird. Try to install TWRP 3.02 again.
Then try sokkoban's ROM (the one with SU preinstalled). As long as you have the european model (C432) it should work. You should be patient, it might need more than one tries.
An other option is to try setting it up from the beginning:
go to this thead and head over to chapter 5 and install the EU dual sim files.

Also do not forget, when in fastboot mode, you use the fastboot command, not adb.

staska_lt said:
Can't you just flash the system.img trough fastboot?
Click to expand...
Click to collapse
i flashed it but screen stuck on logo !

hosamzaiher said:
i flashed it but screen stuck on logo !
Click to expand...
Click to collapse
can you acces twrp?

Flashable L09C432B378

Does anyone know how to flash untouched stock L09C432B378 with TWRP ?

You do need to have an unlocked bootloader, then you can enter fastboot mode and flash TWRP.
You can flash the full OTA again in case something goes wrong and this does also restore the bootloader lock.
Or do you mean to flash the firmware in TWRP?

christopherpfister said:
You do need to have an unlocked bootloader, then you can enter fastboot mode and flash TWRP.
You can flash the full OTA again in case something goes wrong and this does also restore the bootloader lock.
Or do you mean to flash the firmware in TWRP?
Click to expand...
Click to collapse
The phone has a material problem that need to be returned for service, I want to flash a full stock ROM with all the bloatware.
Could you point me to the full OTA download ?

lapocompris said:
The phone has a material problem that need to be returned for service, I want to flash a full stock ROM with all the bloatware.
Could you point me to the full OTA download ?
Click to expand...
Click to collapse
Here you can find any firmware for the EVA-L09 to download. You need to extract the content to a "dload"-folder on your sdcard and start the install by booting with Vol+ & Vol- pressed.

christopherpfister said:
Here you can find any firmware for the EVA-L09 to download. You need to extract the content to a "dload"-folder on your sdcard and start the install by booting with Vol+ & Vol- pressed.
Click to expand...
Click to collapse
I am currently on MaHo_66's ROM with TWRP, will this fail to flash ?

lapocompris said:
I am currently on MaHo_66's ROM with TWRP, will this fail to flash ?
Click to expand...
Click to collapse
No this should work in any state your device is in regarding what's installed/flashed except​ when your battery is low.
But consider that it will also restore recovery/boot partitions and the bootloader in general.

christopherpfister said:
No this should work in any state your device is in regarding what's installed/flashed except​ when your battery is low.
But consider that it will also restore recovery/boot partitions and the bootloader in general.
Click to expand...
Click to collapse
I downloaded the EVA-L09C432B378.zip and did as you said, but the installation failed (incompatible package)

lapocompris said:
I downloaded the EVA-L09C432B378.zip and did as you said, but the installation failed (incompatible package)
Click to expand...
Click to collapse
Are you sure you have extracted the contents of the zip to a folder called dload on the root of your sdcard and your battery is not low? You can also check the guides to this method in this forum.
It also depends on what firmware you are using now but if you already are on b378 it should definitely work fine.

christopherpfister said:
Are you sure you have extracted the contents of the zip to a folder called dload on the root of your sdcard and your battery is not low? You can also check the guides to this method in this forum.
It also depends on what firmware you are using now but if you already are on b378 it should definitely work fine.
Click to expand...
Click to collapse
Since my phone is unlocked and has TWRP, maybe that the problem.
So I flash oeminfo-huawei-p9-eval09-c432.zip, then the process work but upon reboot a lot of stock app are missing, including camera, folder and backup. And there is no keyboard.

I am not entirely sure but I think these are located on the /vendor partition. But I always thought that they were part of the full OTA. Maybe you can try to find and flash the stock vendor partition?
Sent from my Huawei P9 using XDA Labs

You'll have to flash update_full_hw_eu.zip as well.
Extract it and put that update.app in the dload folder. Where did you download firmware from?
Seems you must flash hw in twrp. no other way.
EVA-L09C432B378 FullOTA-MF: http://update.hicloud.com:8180/TDS/data/files/p3/s15/G753/g104/v75049/f1/full/update.zip
EVA-L09C432B378 update_full_hw_eu: http://update.hicloud.com:8180/TDS/...04/v75049/f1/full/hw/eu/update_full_hw_eu.zip
I don't think Public is needed, it contains no update.app anyway and would need to be flashed in TWRP.
christopherpfister said:
I am not entirely sure but I think these are located on the /vendor partition. But I always thought that they were part of the full OTA. Maybe you can try to find and flash the stock vendor partition?
Sent from my Huawei P9 using XDA Labs
Click to expand...
Click to collapse
It's downloaded separately when you update, but not with dload.

Honor 5C can't flash nougat

Hi guys.
I'm having problem with flashing nougat on my NEM-L21C432B132. I'm on 6.0 at the moment and I used both dload folder on sdcard method and Firmware Finder. Tried different versions and I keep getting warning saying "incompatibility with current version". How do I solve this ?
I have no root, stock recovery, unlocked bootloader. I thought it could be because of unlocked BL, but I cannot seem to lock it as "fastboot oem lock" doesn't work for me.

Serekzolty said:
Hi guys.
I'm having problem with flashing nougat on my NEM-L21C432B132. I'm on 6.0 at the moment and I used both dload folder on sdcard method and Firmware Finder. Tried different versions and I keep getting warning saying "incompatibility with current version". How do I solve this ?
I have no root, stock recovery, unlocked bootloader. I thought it could be because of unlocked BL, but I cannot seem to lock it as "fastboot oem lock" doesn't work for me.
Click to expand...
Click to collapse
You can download full firmware and flash it via dload method..

hassanjavaid8181 said:
You can download full firmware and flash it via dload method..
Click to expand...
Click to collapse
Like I said it doesn't work for me as I keep getting "incompatibility with current version" error. I tried using the dialpad code and going to "Software Update" and tried the 3 buttons (VOL UP, DOWN and POWER ON ) method and I get the same error. Can I just install TWRP and flash the .zips I get from extracting the update.app file ?
EDIT: Just tried TWRP. I get error 7 and the flashing procedure doesn't even start

Serekzolty said:
Like I said it doesn't work for me as I keep getting "incompatibility with current version" error. I tried using the dialpad code and going to "Software Update" and tried the 3 buttons (VOL UP, DOWN and POWER ON ) method and I get the same error. Can I just install TWRP and flash the .zips I get from extracting the update.app file ?
EDIT: Just tried TWRP. I get error 7 and the flashing procedure doesn't even start
Click to expand...
Click to collapse
You cannot flash it via twrp...
You are trying to flash OTA file or full firmware??

hassanjavaid8181 said:
You cannot flash it via twrp...
You are trying to flash OTA file or full firmware??
Click to expand...
Click to collapse
At the moment I have full firmware downloaded from Huawei Firmware Finder
The one called exactly : NEM-L21C432B352 FullOTA-MF . I believe that's the right one ? If not, which one is ?

Serekzolty said:
At the moment I have full firmware downloaded from Huawei Firmware Finder
The one called exactly : NEM-L21C432B352 FullOTA-MF . I believe that's the right one ? If not, which one is ?
Click to expand...
Click to collapse
Its not in update.app format right??
You can download full firmware from honor official site according to your model and build number..and then try to flash..

hassanjavaid8181 said:
Its not in update.app format right??
You can download full firmware from honor official site according to your model and build number..and then try to flash..
Click to expand...
Click to collapse
It is in .zip format but I extract it and put the update.app into dload folder. I will try to download from honor official site and let you guys now if there's any progress.
EDIT: just had a look on the website. There's no firmware for Honor 5C there. Can anyone point me how can I make nougat work and where do I download the right files ?

Serekzolty said:
It is in .zip format but I extract it and put the update.app into dload folder. I will try to download from honor official site and let you guys now if there's any progress.
Click to expand...
Click to collapse
Ok ...

hassanjavaid8181 said:
Ok ...
Click to expand...
Click to collapse
Just downloaded and got the same error. Please can anybody tell me do I have to be on locked bootloader to have OTA's or dload method updates working ?
The error is: Software install failed!

Serekzolty said:
Just downloaded and got the same error. Please can anybody tell me do I have to be on locked bootloader to have OTA's or dload method updates working ?
The error is: Software install failed!
Click to expand...
Click to collapse
You dont need to relock boot loader for ota..or upgrade..
All you have to be on stock recovery

hassanjavaid8181 said:
You dont need to relock boot loader for ota..or upgrade..
All you have to be on stock recovery
Click to expand...
Click to collapse
I am on stock recovery. I have no clue how to install nougat...can anyone help me somehow ?

Serekzolty said:
I am on stock recovery. I have no clue how to install nougat...can anyone help me somehow ?
Click to expand...
Click to collapse
Give me time till tomorrow. Will help you budyy.

shashank1320 said:
Give me time till tomorrow. Will help you budyy.
Click to expand...
Click to collapse
Hello,
I have extracted the update.app from the 6.0 version, flashed boot.img and recovery.img through fastboot, and my phone found the update even without using the Firmware Finder..strange but I have downloaded it and flashed without problems. My bootloader didn't even lock after flashing which happens from what I've read. Anyway I'm on the newest firmware ATM and also it's rooted. Maybe someone can explain that in case anyone had a similar problem in the future ?

Serekzolty said:
Hello,
I have extracted the update.app from the 6.0 version, flashed boot.img and recovery.img through fastboot, and my phone found the update even without using the Firmware Finder..strange but I have downloaded it and flashed without problems. My bootloader didn't even lock after flashing which happens from what I've read. Anyway I'm on the newest firmware ATM and also it's rooted. Maybe someone can explain that in case anyone had a similar problem in the future ?
Click to expand...
Click to collapse
What was the size of OTA? If it was 300-400 MB then it would not harm for bootloader or recovery

shashank1320 said:
What was the size of OTA? If it was 300-400 MB then it would not harm for bootloader or recovery
Click to expand...
Click to collapse
It was full size, the one above 1GB.

Serekzolty said:
It was full size, the one above 1GB.
Click to expand...
Click to collapse
OTA normally doesn't lock bootloader. Have seen this in my 5X.

Go back to stock rom

Hi,
I've installed a custom rom, but now i can´t install updates, Pie for example.
How can i unroot and go back to stock rom?
Thanks

aalmeida1972 said:
Hi,
I've installed a custom rom, but now i can´t install updates, Pie for example.
How can i unroot and go back to stock rom?
Thanks
Click to expand...
Click to collapse
I'd suggest HurUpdater: https://forum.xda-developers.com/ho...h-official-firmware-recovery-t3769279/page111
OTAs do work with an unlocked bootloader, but not with root or custom kernels.

Does this works with the P10? In the post i ddin´t found the P10.
And if it works, wich zip file i have to choose? And i have root
Thanks

Try my guide (Tutorial #2, Oreo to Oreo)
After that do a factory reset with eRecovery (boot with Vol+ and connected USB).
What also should work is flashing the system.img manually via fastboot.
For this extract the system.img from the correct firmware version with Huawei Update Extractor.
Connect your phone to your PC, boot into fastboot and flash with "fastboot flash system PATH\TO\SYSTEM.IMG".
After that do a factory reset with eRecovery (boot with Vol+ and connected USB).
Note for the next time: backup your system partition via TWRP before flashing the custom rom.
Also note that a factory reset is needed, without your phone won't boot, so backup your personal data before doing it.

aalmeida1972 said:
Does this works with the P10? In the post i ddin´t found the P10.
And if it works, wich zip file i have to choose? And i have root
Thanks
Click to expand...
Click to collapse
Yes, it works on the P10. You can download the files with the firmware finder app. I'd recommend the newest oreo version for your customisation (e.g. B382 for C432).
But Jannomag's solution should work equally well.

Wich Jannomag´s thread?
Do you have the link, please?
Thanks

aalmeida1972 said:
Wich Jannomag´s thread?
Do you have the link, please?
Thanks
Click to expand...
Click to collapse
The fourth message in this thread

I am sorry, maybe i am just dumb but i can't find it

I followed the guide but know i am i an bootloop. I get the message "your device has failed verification and may not work properly"

It restarded, but as D188-L29!!! I download the VTR-L29 on https://pro-teammt.ru/firmware-database/?firmware_model=VTR-L29C432&firmware_page=0
Now i can't update or nothing

aalmeida1972 said:
It restarded, but as D188-L29!!! I download the VTR-L29 on https://pro-teammt.ru/firmware-database/?firmware_model=VTR-L29C432&firmware_page=0
Now i can't update or nothing
Click to expand...
Click to collapse
Possibly you renamed the wrong customisation file (i did it once for the 09 while I needed the 29).

Which one did you download? And did you flash manually or did you use my script?
Download my oeminfo, it's from VTR-L29C432 Version 8.0.0.380, while the version doesn't really matter.
Flash it via TWRP using "Install" and "Use Image". Flash it to oeminfo partition. Then do my update script again.

I followed the guide to do Oreo to Oreo - basically wanting to get from custom Rom (fRomFuture B370) back to stock, so I chose the same firmware version to extract. Flashed everything with the script and it went fine and it boots and works.. but
The resolution seems to be off, too low and the right side of the screen is unresponsive to touch (about 1cm )
EDIT- Rolled back to fRomFuture B370 for now - need to find a way to get back to stock, as want to move on to Openkirin ROM instead

HI, i have a vtr-l29 root, i want to unroot(version oreo), how do i do it? what do i need to flash?. thank you Alex